bluuebunny/crossref_metadata_2025_split huggingface dataset:
Communication Barriers of a Construction Company’s Network Management
Authors: Demchenko V , Khoroshevskaya J , Krukov K 
Published: March 2021

Abstract
The article deals with the problematic aspects of inefficient communication in the production cycle from the point of view of enterprise management. The problem is considered from the perspective of different Sciences: linguistics, management, production organization. It is proposed to use information and Intelligent environments, software systems for modeling and production management. The article notes the importance of expert solutions in the innovation process. Based on the information approach to the development of communications, the possibility of creating institutional forms of innovation in the management of construction production is shown.
Railway Architecture Along the Chinese Eastern Railway at the Beginning of the 20th Century
Authors: Glatolenkova E V 
Published: March 2021

Abstract
The article presents an analysis of railway complexes architecture in the settlements along the Binzhou Railway, Binsui Railway and the part of the high-speed line Hada Railway in Nothern China. That settlements was built by engineers from the Russian Empire in the early 20th century as stations of the Chinese Eastern railway (CER). To create all the conditions for the operating of the road, it was important not only to lay the track, but also to create infrastructure for servicing trains and ensuring a comfortable housing for the growing population. The tight construction time required the use of standard projects on the road. These buildings that have survived to this day have become objects of close attention of architectural historians and restorers. In a number of cities, former locomotive depots are being converted into museum spaces, old railway stations are being restored and included in tourist guides. This paper examines the history of construction of these objects in order to study the design features of utilitarian architecture on the territory of the CER during the construction of the Trans-Siberian railway. The analysis was based on the material obtained during the work with archival documents and drawings, as well as information obtained during field surveys of towns and cities on the railway line from Manchuria to Suifenhe and from Harbin to Dalian.
New Approach to Assessment of Granular Soil Shear Strength in Road Pavement
Authors: Moshenzhal A V , Zhdanova S M , Piotrovich A A 
Published: March 2021

Abstract
The article provides a new approach to assessment of granular soil shear strength in road pavements made of paving stones from the point of view of granular medium mechanics. The new approach consists in considering the features of normal and shear stress distribution in the multilayer structure of road surfaces made of artificial paving stones. The results of new approach make it possible to judge upon reasonability of considering the discrete structure of granular materials used in transport construction.
Slotted Resonator Section of the Silencer for Engineering Networks
Authors: Plitsyna O V , Rogova T N 
Published: March 2021

Abstract
The paper is devoted to noise reduction in engineering networks. It is indicated that the slotted silencer is promising for systems with large cross-section air ducts and flues. The technological and operational possibilities of including in the silencer the additional slotted section are noted. The additional two-slot section containing Helmholtz resonators is presented. Based on the calculations it was found that broadband noise reduction is provided by tuning the slotted resonators in a geometric progression with a denominator of 20.8. For a section with three resonators in each slot duct the following is shown: the resonator with the highest tuning frequency does not significantly effect the noise reduction of the other two resonators; the resonator with the highest tuning frequency can be placed between resonators with lower tuning frequencies. Compact placement of slotted resonators is proposed. The length of the device is shorted by 1.5 times while reducing the efficiency by 30%. The obtained data show that the silencer section composed from Helmholtz slotted resonators allows fulfilling silencer with additional noise reduction in the frequency range of 31.5-125 Hz and acceptable length.
Architecture of Mass Dwelling in Russia and the Necessity for Structuring by Types of Property
Authors: Solodilova L A 
Published: March 2021

Abstract
The housing policy carried out in Russia in the 90s of the XX century led to the emergence of a new type of apartment building (multiple dwelling), which is essentially a kind of conglomerate of a municipal building with privatized flats. This practice of combining forms of ownership continues to this day, but if the old nine and five-story residential buildings despite their typical monotony nevertheless created a cozy and in many ways human environment, modern apartment buildings are faceless panel, very denselypopulated “catalogue boxes” with the same faceless forms of ownership, when the owners of flats and social and commercial tenants coexist in the same residential building. Such super-dense construction ensures a quick payback of investments to the builders, investors and developers, while simultaneously imposing on the consumer a close proximity of absolute strangers, including anonymous-aggressive activities of the management companies. The current situation of the construction of multi-storey and high-rise multiple dwellings leads to inefficient use of land, generating a truly depressed architecture of mass utilitarian consciousness. The dominance of large-scale apartment buildings must be stopped, while the forms of ownership and management must be disaggregated and differentiated. Mass development can and should be represented by more diverse volume-spatial solutions of build up with different heights and various types of filling (townhouses, blocked buildings, suburbias, etc.) taking into account new effective forms of private rental entrepreneurship and management.
Structural and Mechanical Preparation of Rolled Products for Fasteners
Authors: Pachurin G V , Mukhina M V , Gevorgyan G A 
Published: March 2021

Abstract
Based on the analysis of quality factors of calibrated rolled products, the structural and mechanical properties of steel 20Mn2Si for cold heading of hardware products are formed. The balance is established during the preparation of gauged bars to manufacture fasteners from it. To produce gauged bars with a diameter of 7.75 mm, a new technological flow is proposed using hot rolled products with a diameter of 8.5 mm. The proposed resource-saving technology for preparing rolled steel 20Mn2Si excludes spheroidize annealing, which reduces labor and energy costs, increases the environmental friendliness of production and operational reliability of fasteners. This eliminates the possibility of quenching cracks, the need for straightening products, the risk of thread defects and reduces the cost of manufacturing long bolts. This makes it possible to significantly reduce the process chain, reduce the cost of manufacturing fasteners and meet regulatory requirements for their mechanical properties.
Historical and Cultural Features of Russian Home Interior in the Context of Daily Routine
Authors: Plekhanova V A , Konopleva N A , Kucherenko A L 
Published: March 2021

Abstract
The article presents the analysis of the daily urban culture dynamics of the Russians and the interior design features of the urban Russian Home in the Soviet and post-Soviet periods. The interior, being the embodiment of the material and symbolic human environment represented by Home, is considered as a source of historical and cultural information about a person. The daily routine of a mainstream citizen was studied, reflecting the dynamics and contradictions of drastic historical changes and allowing to understand the cultural mentality at certain historical stages. In addition to photographic materials of the Russian housing interiors in the Soviet and post-Soviet periods, media resources data, such as: mass media publications, Internet sites materials, the article also contains the results of the authors’ interviews of the residents of the city of Vladivostok. The peculiar features of the Soviet and modern Russian mentality of the average urban resident were highlighted, the trends in the development of Russian urban daily routine were identified. The history of the mainstream Russian interior dating from 1917 up to 2018, represented by the examples of typical housing for its time, clearly reflects the complex path of transforming Russian daily routine from asceticism and sacrifice of the 1920s to the apparently prosperous everyday life of the 1980s and its modern inconsistency. A comparative analysis of the mainstream and elite Russian home interiors reveals significant differences in their quality and, accordingly, the incomparability of daily household culture of different social layers of Russian society. These contradictions in society can be traced throughout the post-revolutionary period and are increasing in modern Russia.
Vernacular Urban Areas as a Qualitative Factor in the Epidemic Situation (on the Example of Khabarovsk)
Authors: Garnaga A F , Nishchimnykh Iu A 
Published: March 2021

Abstract
The article examines the impact of the epidemic situation in the region on the interaction of society with the environment. Changes in the image of vernacular urban areas on the example of the city of Khabarovsk, as well as in the nature of preferences of citizens regarding places of residence, employment and recreation based on the results of sociological surveys in 2017-2019 and 2020 were revealed. Among the criteria for choosing places for recreation, Khabarovsk residents note the presence of large spaces and the degree of control by law enforcement agencies in different areas.
The assumptions and fears of respondents identified during the content analysis of the results of the 2020 survey that the most densely populated urban areas are most vulnerable to the spread of COVID-19 due to the number and density of the population are not confirmed at the meso-level: the largest percentage of infected people living in small settlements in the Khabarovsk territory.
The Influence of Phenolic Antioxidants on the Physical-Mechanical Properties of Hydrin T6000-Based Rubber under Climatic Factors and Hydrocarbon Environments
Authors: Haldeeva A R , Davydova M L , Sokolova M D , Fedorova A F 
Published: March 2021

Abstract
The effectiveness of the stabilizing effect of sterically hindered phenolic antioxidants of the pilot production of N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry (NIOCH SB RAS): CO-3, CO-4, and Stafen, were investigated under climatic conditions of the Republic of Sakha (Yakutia). Rubber samples containing phenolic antioxidants were aged in air, industrial oil of I-50A grade, and oil of the Talakanskoye field for 2 years. The physical-mechanical properties of rubbers based on Hydrin T6000 were studied and it has been established that phenolic antioxidants are more effective than the commercial 6PPD antioxidant.
Investigation of the Formation and Decomposition Processes of the Sredneviluisky GCF Natural Gas Hydrates in Dispersed Media
Authors: Kalacheva L P , Ivanova I K , Portnyagin A S , Solovieva S A , Egorov D R , Vasiliev A A , Chaynikova A A 
Published: March 2021

Abstract
In this paper the processes of formation and decomposition of natural gas hydrates in wet salted sand samples were studied. Investigations of phase transitions were performed on a specially assembled DTA installation. It is shown that with decrease of the humidity and increase of the salinity of media the degree of supercooling decreases, and the amount of the gas bound to hydrate decreases. It has been found that in comparison with the water-gas system in dispersed rocks there is a shift of thermobaric conditions of hydrate formation to the area of high pressures and low temperatures.
Mechanical Characteristics of Alloy Smelted from Ore of Kentik Ore Occurrence (Sakha Republic, Russia)
Authors: Danilov A D , Petrov P P , Stepanova K V , Sibiryakov M M 
Published: March 2021

Abstract
The present work evaluates the possibility of using local minerals to create foundry alloys used in conditions of low temperature. The feasibility of using iron ores from the Kentik ore occurrence in the Verkhnevilyuysky district of the Republic of Sakha (Yakutia) for the manufacture of new cold-resistant and high-strength steels was analyzed. The ore contains oxides of alkaline earth metals: MgO, CaO, Sr0 and BaO, the total content of that is 1.6%, that contributes to the process of deoxygenation of the melt during its cooling, and the deoxygenation product in the form of oxides and other chemical compounds based on Ca, Sr and Ba floats into slag. The content of rare earth yttrium oxide is 0.0058%. Alloy is smelted from Kentik enriched ore, samples for static tensile and impact toughness tests were machined in order to study the mechanical properties. The results of chemical analysis showed that the total content of rare earth oxides Eu2O3, Tb4O7, Dy2O3 and Er2O3 was 0.062%. Such concentration of rare-earth metals promotes the increase of strength properties, as well as the operational characteristics of the material. The fracture surface of impact toughness sample is investigated. Analogues for comparing the strength and plastic properties were given. Technical instructions for obtaining an experimental samples of a cold-resistant medium-carbon alloy with increased strength for castings using a charge of naturally alloyed ferroalloy have been formulated.
Liquid-Phase Sintering of Aluminum-Based Alloys with Additive of Products of Direct Reduction of Iron Ore
Authors: Tarasov P P , Pryadeznikov B Yu , Petrov P P , Stepanova K V , Emelianova Z V 
Published: March 2021

Abstract
The method of direct reduction by hydrogen for iron ores of the Lensk ore field were considered in the work, the particle size, bulk density, a corner of a natural slope of products of grind and reduction of ore were defined, morphological researches, the X-ray spectral microanalysis of particles of the reduced ore material were conducted. Aluminum-based sintered powder materials with the addition of the recovered ore are obtained. It is established that temperature increase of sintering leads to reduction of residual porosity of the compacts. Samples with additive of the reduced ore keep the correct geometrical form practically in all studied ranges of changes of temperature of sintering and content of additive. Measurement of hardness of the sintered composite aluminum-based alloys with additive of powders of the reduced demonstrate that higher values of hardness are observed at structures from 14.4 and 18.7 weight % of additive of the reduced ore.
Deformation Dependences of the Power and Environmental Resistance of Reinforced Concrete Structures Under Accidental Actions
Authors: Kolchunov V I , Androsova N B 
Published: March 2021

Abstract
The problem of determining the parameters of the stress-strain state of reinforced concrete bending elements with the simultaneous manifestation of force loading and environmental impact under static-dynamic loading conditions is considered. Dependences of the deformation model were constructed using the integral modulus of deformations by V M Bondarenko. The parameters of the diagrams of the static-dynamic deformation of the section of corroded concrete under the action of a static and short-term dynamic load are determined on the basis of a rheological two-element model of concrete deformation of the theory of plasticity by G A Genieva. At the same time, the hypothesis was accepted that the relationship between stresses and strains in corrosion damaged concrete under its short-term loading is affinity-like to similar dependencies of undamaged concrete, and the ultimate deformations of concrete under static and static-dynamic loading modes are equal to each other. A methodology and an algorithm for the computational analysis of the strength and environmental resistance of reinforced concrete structures at all stages of static-dynamic deformation are proposed.
Numerical Modeling of Solutions of the Applied Problems for the Poisson’s Equation
Authors: Kazakova A O , Mikishanina E A 
Published: March 2021

Abstract
Many problems of continuum physics, applied physics, electrostatics, heat engineering, and structural mechanics are described by boundary value problems for the Poisson equation. The article is devoted to the construction of a numerical algorithm for solving plane boundary value problems for the Poisson equation. The algorithm is based on the transition to a polyharmonic equation, which is solved by the method of linear boundary elements. We consider two boundary value problems with different boundary conditions: Dirichlet boundary conditions and Neumann boundary conditions. To construct a numerical solution using the linear boundary element method, the boundary of the area is replaced by an inscribed polygon. The boundary conditions are satisfied at the middle (control) points of the elements. A polyharmonic equation is reduced to a system of linear integral equations, which can be reduced to a system of linear algebraic equations. Test numerical examples confirming the effectiveness of the proposed algorithm are given.
Analysis and Forecasting of Housing Prices Considering Particulars of Vladivostok Real Estate Market
Authors: Bekker T , Buzina M , Tupikova O 
Published: March 2021

Abstract
The present article is dedicated to the problem of price forecasting with due consideration for particulars of local real estate market. Economic and geopolitical features of Vladivostok determine the particulars of real estate market, and the high level of housing prices was duly considered. A brief overview of approaches and methods used for forecasting of prices for residential property was performed. A special monitoring study of the real estate market was carried out; the general trends of price changing were identified, and time trend was evaluated. Methodological approach has been substantiated, and the model of forecased housing prices has been developed with due consideration for the particulars of real estate market at the municipal level. The forecast of for residential property price changes was carried out with reference to the basic scenario of the socio-economic development of Vladivostok up to 2025. Practical application of the proposed model would allow investors and developers to evaluate the effective demand in a more objective manner, and thereby to provide adequate offers in Vladivostok primary housing market; and would allow the municipal government to develop and undertake specific measures of state regulation and support.
Development of a Passive System Model of Human Heat Exchange with the Environment
Authors: Rodicheva M V , Abramov A V , Gneusheva E M 
Published: March 2021

Abstract
When modeling human heat exchange, a mathematical description of the processes of generation, heat distribution in the body, and heat transfer to the environment has been proposed. A numerical implementation of the model has been obtained. The solutions have been verified with experimental data in comfortable conditions. It has been established that the model can be used in solving the problem of ensuring the thermal comfort of a person when designing residential and public spaces.
Speech as Noise Interference During a Mass Event
Authors: Shubin I L , Antonov A I , Ledenev V I , Yarovaya T S 
Published: March 2021

Abstract
Participants of mass events are noise sources for surrounding area and perception of information. To rate the intelligibility of the signals of sound amplification systems and to design the instruments of the noise insolation, the methods of calculating the propagation of sound energy from distributed noise sources such as people are developed. Methods take into account features of the emission of sound energy by such sources. The features include time-varying acoustic and spatial characteristics of noise sources. They are associated with the random nature of the position and direction of noise emission from event visitors. The method of calculating the energy parameters of direct sound depends on the parameters of the noise source. The low density of people location implies to use the method of mathematical modeling, including the random position, orientation and duration of speech of noise sources. The increase in the mass character of events and the increase in the density of point noise sources are rational to use the integral calculation method. The numerical solution of the integral equation is implemented in a computer program and used for calculating the noise from fans of a football match at the stadium and adjacent urban development. The methods for calculating direct sound from distributed sources in the form of a circle, a circular sector and a rectangle are suggested on the basis of an analytical solution of integral expressions. Comparison of calculation results by developed methods and experimental data is performed. The discrepancy between the results in the most difficult situations doesn’t exceed ± 3 dB.
Ecological Reclamation of Lawn Coverings in Disturbed Areas
Authors: Avdeeva E , Zheltobryukhova E 
Published: March 2021

Abstract
Today, the problem of reclamation of landfills for solid domestic waste is urgent, which is a complex of works aimed at restoring the economic value and productivity of the restored territories. Ecological reclamation is a set of measures for the ecological and economic restoration of lands, the fertility of which has been disturbed as a result of human activity. The purpose of reclamation is to improve environmental conditions, restore the productivity of disturbed lands. In the city of Krasnoyarsk and its suburbs, the peculiarities of weather conditions are traced, affecting the growth and development of lawn coverings. In the course of the study of the correspondence of the parameters of climatic environmental factors to the criteria for the growth of high-quality lawn coverings for the reclamation of landfills, it was established that the humidity regime is the limiting factor. On the basis of this, we have developed types of trash mixtures for reclamation of disturbed areas. When arranging lawn coverings in the city of Krasnoyarsk and its suburban area, it is necessary to focus on the natural conditions of lawn moistening and adopt care technologies adequate to the prevailing conditions. the biological properties presented in these herbal mixtures of herbs meet the requirements that are imposed on the reclamation of disturbed areas and their care. They have high winter hardiness and drought resistance, resist pathogens, pests and weeds.
Estimation of the Survival Rate of Pinus Sylvestris Urban Landscaping Facilities in the City of Krasnoyarsk
Authors: Avdeeva E , Panov A 
Published: March 2021

Abstract
Scotch pine takes an increasing place in urban greening. Its high decorative qualities, especially in winter, undemanding to soil conditions, rapidity of growth, winter hardiness, high sanitary and hygienic and environmental protection properties contribute to the greatest distribution. It has been established that when creating green spaces at city greening objects, it is necessary to take into account the dynamics of plant survival. The study of the survival rate of Scots pine according to the reaction of the growth of lateral branches showed that the main decrease in growth after transplantation occurs in the second year, the restoration of growth occurs after 7-8 years. The survival rate of plants largely depends on the state of the urban environment and the technology after planting care for plantings, especially in the first and second years after transplanting. At the same time, when creating green spaces, it is also necessary to comply with the recommendations of the “Building codes and regulations" in relation to the minimum distances to buildings, structures, footpaths and driveways, as well as the schedule of work to create a landscaping facility.