bluuebunny/crossref_metadata_2025_split huggingface dataset:
Crowdsourcing Data for the Elaboration of Noise Maps: a Methodological Proposal
Authors: Graziuso G , Grimaldi M , Mancini S , Quartieri J , Guarnaccia C 
Published: September 2020

Abstract
In recent decades, the awareness that noise pollution caused by traffic, industry and recreational activities constitutes one of the main environmental problems is growing. In order to control the environmental noise, many regulations propose the creation of noise maps according to standard procedures that involves the data acquisition, analysis and elaboration. In this paper, crowdsourcing noise data collection is described. It involves volunteers that can record sound pressure levels thanks to specific applications on their mobile devices, such as the “NoiseCapture” app developed in France by CNRS and IFSTTAR, and upload the measurement, with their GPS location data, on a continuously updated map. This approach mainly contributes to citizens’ greater awareness about noise pollution in an urban area. Beside this mode of data acquisition, the paper focuses on the analysis of the acquired data with the kernel density estimation technique, implemented in a GIS environment. The results allows the elaboration of sound density maps, defined from the spatial and temporal point of view, that can support the appropriate mitigation actions.
Influence of rising the corners of a simply supported reinforced concrete slab on its reinforcement by numerical mehods
Authors: Vasiljev A V , Perekal’skiy O E , Vasiljeva N A , Larionov S G , Potapov Y B 
Published: September 2020

Abstract
The article presents a method for calculating a simply supported slab with a supple support contour using a numerical method in a computational software package. The support contour of a simply supported slab is formed by groups of two nodal finite elements, which allow modeling a linear supple bond in the vertical direction. They take into account the possibility of changes in the design scheme due to subsidence of the walls. The suppleness of the contour of prefabricated elements is 1 mm without taking into account the bends of the corners of a simply supported slab. The forces and reinforcement of a simply supported square slab were calculated according to the proposed methodology with a calculation where the joints of the contour are set to move in the vertical direction. As a result, the bending moments in the middle of the span increase, and the torques in the corners of the slab decrease. The reinforcement of the upper area of the slab is not required. The reinforcement of the lower area of the slab is increased by the amount of released reinforcement from the upper area of the slab.
Special polygon for investigation of seismic insulation properties of foundations
Authors: Lapin V A , Yerzhanov S Y , Aldakhov Y S 
Published: September 2020

Abstract
There is a special polygon to study the seismic insulating properties of buildings in Almaty. In 1989, stations of engineering seismometric service were installed on three constructed houses with the same supra-foundation part (9-storeyed large-panel houses), but with different foundations: conventional strip foundations with a system of cross strips, seismically isolating kinematic foundations and supports with PTFE gaskets. In the Republic of Kazakhstan, over 40 houses on kinematic foundations were built in Almaty. During the earthquake on August 16, 2014, instrumental records of the indicated earthquake were obtained. These instrumental records formed a very convenient for studying sample out of 10 accelerograms – they were obtained on the analogue house and two buildings with seismically isolating foundations. It has been established that the magnitudes of the acceleration at the level of the 9th floor in seismically isolated buildings are 47% less than the similar value in the building on a strip foundation. The maximum values of the spectral acceleration for seismically isolating buildings at the level of the 9th floor are 1.2 times less than the same value for FT, and 2.4 times for KF.
Optimization of the geometry of facades based on the results of studies of wind effects
Authors: Churin P S , Pomelov V Yu , Kovaleva A A 
Published: September 2020

Abstract
This article considers the possibility of reducing the wind load on building structures by optimizing their shape. The general algorithm for creating an architectural project using simulation engineering calculations is presented. The ANSYS Student software package analyzed the simplest methods of architectural shaping: bevels of ribs, rounding of edges, rounding of faces, vertical and horizontal articulations.
Curing kinetics in the activated cement-water system
Authors: Rubanov A V , Gorlenko N P , Sarkisov Yu S 
Published: September 2020

Abstract
The paper deals with the strength improvement in the cement-water system that generally leads to the improved performance of hydrated cement and concrete. After many years of experiments conducted by Russian and foreign experts, many ways to improve the strength of cement systems have been developed. The most efficient are various activation methods of either cement or water, which is then used as water of mixing for cements. This work studies the structure formation processes in the activated cement-water system, which are still less investigated. Cement is activated through its dispersion in a planetary mill, and water is activated by a constant magnetic field with 0.1 T flux density. It is found that the strength of the cement-water system increases by 38% in comparison with the untreated test samples.
Simulation Studies of Numerical Relationship of Sewage Energy Dissipation Chamber Efficiency
Authors: Stolbikhin I , Semenov A 
Published: September 2020

Abstract
The paper introduces a computer model to simulate design of an energy dissipation chamber (EDC). This model allows expressing the air flow rate through the system as a function of the incoming effluent rate. A method is developed to proceed with statistical analysis of simulation results. A set of plots of air flow rate is developed for effluent rates under different parameters of energy dissipation chamber. The approximating function and coefficients allowing obtaining the air consumption under certain conditions (geometrical parameters of the energy dissipation chamber and the effluent rate) are represented. The graphs are obtained in the form of three-dimensional surfaces reflecting a dependence of the ejected air flow rate on the incoming sewage liquid rate for at various values of the stand pipe embedment relative to the liquid level. The developed graphs show that the highest air flow rate is achieved at the maximum water flow rate and at the minimum embedment. Thus, the numerical dependences of the ejected air flow rates were obtained for the energy dissipation chamber as functions of the water flow rate. The embedment of the stand pipe at the level of the overflow wall and the zero inlet radius are shown to be the most effective parameters of energy dissipation chamber design.
Time necessary for microwave drying of mineral soils
Authors: Prokopowicz P , Pires P , Michałek A , Rybak A , Khairutdinov A M 
Published: September 2020

Abstract
Construction of large earthworks (cuts and embankments) brings the necessity of fast and reliable testing quality control procedures to be applied directly on the building sites. The paper presents a conventional, standardized method for determining soil moisture - consisting in drying a sample in a machine that circulates dry, hot air. This procedure is widely used and is considered to be very reliable and effective for any type of soil. Its main disadvantage is the time it takes to complete, as it takes a minimum of 24 hours to obtain the results of moisture content and consequently, to compute the compaction (density) indicator. An experiment was conducted, based on former Jastrzębska’s experiments and recommendations, consisting in drying soil samples in a microwave oven. The results were confronted and discussed with a special regard to necessary for microwave drying of mineral soils of different nature. Some recommendations were given in conclusions. As all the authors are still students, some remarks were juxtaposed concerning the importance of practical “experience-based” education within a frame of international exchange programs.
The peculiarities of power conservation and energy efficiency in power supply systems of industrial enterprises
Authors: Bebikhov Yu V , Semenov A S , Egorov A N , Glazun M A , Fedorov O V 
Published: September 2020

Abstract
The paper deals with the peculiarities connected with energy efficiency and power conservation measures in power supply systems of industrial enterprises. The purposes and objectives of the research conventionally divided into several areas: electric networks, electric drive, control and monitoring of energy consumption. The current state of energy and resource efficiency at industrial enterprises is described. The scientific literature of Russian and foreign authors working in this field is analyzed. The objects of research which are a mine and a processing plant for the extraction and processing of diamondiferous raw material are identified. The methods of mathematical modeling and instrumental monitoring are applied to analyze energy efficiency and power conservation. The region power supply system, automated (frequency-controlled) electric drive of processing units of mining enterprises, automated systems for monitoring and management of enterprises’ production processes are considered in the paper in details. The methods with a significant contribution to power conservation and energy efficiency of mining enterprises developed by the authors are presented. The conclusions on the prospects of future research in the field of energy efficiency and power conservation at mining enterprises are made.
The effectiveness of the Smart Office system
Authors: Salosin A , Gamayunova O , Mottaeva A 
Published: September 2020

Abstract
The capabilities of the Smart Office system allow you to control lighting, climate, safety in the building, as well as the work process as a whole. To assess the effectiveness of investments in the Smart Office system, the net present value, profitability index and payback period were calculated. The calculations showed that the implementation of the smart office system is an expensive, but justified in terms of energy efficiency and economy. As a result of the calculation, it was found that the cost of the system, taking into account the annual increase in utility tariffs by 7% and the increase in the discount rate by 9%, will pay off in 6 years, and the costs will begin to save money during the operation of the building.
The use of the Analytic Hierarchy Process in Determination of the Design Solution for Vertical Gardening
Authors: Ivanova N , Ganzha O , Podkovyrov I 
Published: September 2020

Abstract
The researches cover the methodological basis for formation of vertical gardening (landscaping) of building facades in the concept of landscape architecture, ecology of vertical gardening, green construction technologies and measures aimed at the improvement of the energy efficiency of buildings. The ‘Tree of Objectives’ is substantiated, which determines contemporary fields of development of green facades. For the first time, a methodology for choosing variants of the project design and technology solution of vertical gardening is proposed. In the work, multi-factor landscape ecological analysis is used; the analytical method of system analysis – the Analytic Hierarchy Process – is discussed. The author of the method is Thomas L. Saaty (USA), who represents the structure of a practical decision as a hierarchy, with further decomposition of the problem into more simple elements, and further, in the processing of the sequence of judgments of a decision maker on the basis of comparing elements to each other two at a time. In result, the intensity of interaction between elements in the hierarchy is described, and then, the judgments are expressed numerically. The method includes the procedures of synthesis of multiple judgments, of obtaining priority ranking of criteria, and finding alternative solutions. The proposed method for evaluation of a group of factors is universally applicable and can be easily used in practice, and also is the basis for preliminary selection of urban environment factors for creation of a comfort environment in the course of realization of landscape ecological properties of vertical gardening. The use of the system analysis method allows solving the analytical problem of choosing a design solution for vertical gardening system.
Efficiency of innovation sector development: the linear and non-linear models of innovative economy building development
Authors: Karlova M , Fomina T 
Published: September 2020

Abstract
The author discusses the problems of the efficiency of innovation sector development: the linear and non-linear models of innovative economy building development. Currently, an active economy transition to a new technological mode and mainstreaming of innovation as a key factor in economic development are taking place all over the world. The Russian Federation is no exception. The undergoing investment policy should be aimed at ensuring the conditions that promote increasing in the rate and efficiency of innovation sector development. Today, the influence of factors determining the conditions for innovative development of the Russian economy, in general, and its regions in particular, is ambiguous. The purpose of this paper is to give a correlation and regression analysis for assessment of factors that impact the innovative activity of the state. Based on the analysis of trends in implementation of the Russian innovation activities over a period of 2000–2018, the paper specifies their strong and weak aspects. In virtue of the correlation and regression analysis, the internal structure of innovative activity was studied and the components were identified, the improvement of which will significantly increase the overall innovation index and transfer the country to the higher positions in the world ranking. It is noted that, in addition to a developed national structure of innovation activity, the fundamental research is required in combination with an effective education system. The dynamics of investments and staff number involved in the field of innovation is traced, the linear and non-linear models are constructed and practical recommendations are formulated. The revealed relations indicate the efficiency of using government expenditures for innovative and scientific development. The directions of increasing the efficiency of innovative economy development are specified.
Comparison and analysis of the main building materials’ characteristics for construction
Authors: Rodionov A S , Danilina M V , Pimenov N A , Romanchenko L N , Yarkin V V 
Published: September 2020

Abstract
The choice of material for the walls of the house is an important issue during construction. Walls take up a quarter of all the costs of building a house. If you carelessly take this choice, you can incur serious expenses in the future. When choosing materials for building a house, you need to measure your capabilities with a number of conditions and factors: functional load and purpose (summer house, housing for temporary or permanent residence); the climate of the area where the construction of the house is planned; project scope and number of storeys; the type of future exterior decoration of the facades; the presence and possibility of delivery of building materials to the facility; own budget. The article presents detailed comparative analysis of the most popular building materials (bricks, ceramoblocks, aerated concrete blocks, rounded bar, glued profiled beam, wooden frame, sandwich panels, wood). Each of them has its own advantages and has characteristics that may seem to someone as disadvantages.
Averaging the operating stripping ratio for sinking mining systems based on mathematical simulation
Authors: Loginov E , Ligotsky D , Argimbaev K 
Published: September 2020

Abstract
The article contains the research results for a rational mining mode, definitions, and averaging of the operating stripping ratio. When determining the mining mode using open-pit hydraulic excavators, the problem appears with averaging the operating stripping ratio. Averaging is usually achieved by changing the pit wall angle at the expense of the respective change in the bench width. Minimum bench width serves as a limiting factor if working benches have to be reduced during the open pit mining. Continuous mining operations in an open pit require calculation and averaging the operational stripping ratio. There is a classical approach to calculate the average operational stripping ratio, but this method is graphical and has some errors. Therefore, a mathematical simulation was carried out based on integral calculus to obtain more precise values.
Mathematical modeling of electrothermal processes using the example of high-frequency welding of a batch of symmetric polymer workpieces
Authors: Butorin D V , Filippenko N G , Bakanin D V , Bychkovsky V S , Larchenko A G , Livshits A V 
Published: September 2020

Abstract
The article substantiates the necessity and practical relevance of the mathematical modeling of processes of the high-frequency electrothermy of polymers. A mathematical model of high-frequency welding of polymeric and composite products has been developed. A mathematical model of high-frequency welding of a batch of polymeric and composite products has been developed, which is a system of differential equations of unsteady-state heat conduction with internal heat sources, which allows studying the heat distribution in the entire volume of the processed product of any geometric shape. The paper presents the testing results for the developed mathematical model at high-frequency welding of a batch of polymer parts. This made it possible to identify the effect of a non-insulated electrode heating up during sequential processing of a batch of parts on the position of the coordinate of the maximum heating point and to develop a technique for its search and maintenance of the required position. This, in turn, is necessary for organizing control of the high-frequency processing operation.
Fire and explosion measures for tanks protection selection algorithm based on quantitative assessment of big breathing
Authors: Elizaryev A , Tarakanov D , Mikhailova V , Tarakanov D , Epimakhov N , Elizareva E , Nasyrova E 
Published: September 2020

Abstract
Research objective: Scientific substantiation and development of an algorithm for selecting reservoir fire protection measures based on the big breathing (filling loss) quantitative assessment. Method of research: Theoretical generalization and analysis of approaches for choosing big breathing volume calculating methods, comparative analysis of modern methodological approaches for tank breaths quantitative assessment, as well as using methods for calculating BLEVE effect probability. Results of the study: Analysis of approaches for choosing methods showed that each method has its own calculation specifics, which are reflected in results. Using a comparative analysis of methodological approaches was determined that volumes of big breathing calculated for each method differ by more than 30%. In this regard, algorithm for choosing calculation methods with further forecasting of fire situation is proposed. The algorithm consists of three stages. At the beginning, it is necessary to calculate the filling loss volume, on the basis of them the level of damaging factors is carried out. Depending on the possible situation, protective measures are choosing.
Welding of ring joints of field pipelines with internal corrosion-resistant surfaced layer
Authors: Elagina O Y , Volkov I V , Buklakov A G , Nakonechnaya K V 
Published: September 2020

Abstract
The purpose of this work was to study the issues of ensuring the standard quality indicators of installation of welded pipes of field pipelines with a deposited layer of high-chromium steel. The research was performed on pipes made of steel 09G2S of the K48 strength category with a diameter of 258 mm and a wall thickness of 6 mm. The formation of the deposited layer on the inner surface of the pipe ends was performed by electric arc welding in protective gases with a wire SV-12X13 with a diameter of 1.2 mm. Welding of ring joints of pipes was performed with LB-52U type E50A electrodes according to GOST 9467 in accordance with the developed technology. Experimental testing of welding technology with an assessment of the quality of the resulting welds and their corrosion resistance was evaluated using non-destructive and destructive testing methods. Research results have shown the possibility of obtaining a corrosion-resistant welded joint with appropriate quality standards. Regulatory requirements for the welded connection of pipes with an internal surfaced layer were defined, which can be used in the implementation of projects for the construction of field pipelines with this design. It was shown, that to provide normative values of mechanical properties of welded joints of pipes with internal weld layer requires the development of additions to existing welding technology to the preparation of pipes prior to welding and temperature control prior and concomitant heating, to avoid embrittlement of the metal of the root seam layer when its alloying.
Influence of thermal insulation of the wall area of the floor on the ground on the heat loss amount
Authors: Malyavina E G , Gnezdilova E A 
Published: September 2020

Abstract
The relevance of the study is explained by the fact that in the Russian Federation, the “by zone” method of heat loss calculations of the floor on the ground does not allow considering various factors that affect heat losses. As the heat loss studying method, this work adopts the calculation of the non-stationary annual thermal regime of floors together with the soil mass. There is no such thermal protection indicator as the heat transfer resistance in a non-stationary thermal process, therefore the paper uses a characteristic, in other words, a conditionally reduced one for heat loss calculations through the floor on the ground in stationary thermal conditions. The purpose of this article is to calculate the average characteristic heat transfer resistances for each design zone for thermal protection of the wall area of the floor on the ground with different width of the insulation stripe and heat transfer insulation resistance. The considerable result of the work is detection of significant impact of the soil type, the width of the floor insulation stripe, and the actual resistance to heat transfer of this insulation on the characteristic heat transfer resistance in the first design zone. It follows from the study that the floor thermal insulation stripe in the wall area is the most effective structure of the floor thermal protection, both in terms of reducing heat losses, and in terms of compliance with the temperature standards for the floor.