bluuebunny/crossref_metadata_2025_split huggingface dataset:
Using Convolutional Neural Networks for Muon detection in WCD tank
Authors: González B.S. , Conceição R. , Tomé B. , Pimenta M. , Herrera L.J. , Guillen A. 
Published: September 2020

Abstract
The aim of this paper is to study the possibility of improving the gamma/hadron discrimination in extensive air showers. For this purpose, the identification of hadronic extensive air showers is carried out by means of the detection of muons in water Cherenkov detectors (WCDs). Machine learning algorithms have proven to be useful in a wide variety of fields, and due to their outstanding performance in problems involving complex data, Convolutional Neural Networks (CNNs) have been used in the analysis of the signals measured by the WCDs. Taking simulated events, different approaches were proposed attending to the balance of the classes in the training stage. The results obtained are promising and show that machine learning algorithms provide a powerful tool for muon detection and gamma/hadron discrimination to be considered in future gamma-rays detectors like The Southern Wide-field Gamma-ray Observatory (SWGO) to be built in South America.
Comparison between Sound Pressure Levels and Perception: a Soundscape Application in a University Campus
Authors: Mascolo A , Mancini S , Graziuso G , Quartieri J , Guarnaccia C 
Published: September 2020

Abstract
The assessment and control of acoustic noise in every place in which humans live is usually performed measuring the sound pressure levels and comparing these results with the thresholds defined by regulations. The latest approaches include the possibility to consider the subjective perception of sounds, using the so-called “soundscape” approach. In this paper the authors present a practical application of this approach performed in the Campus of Fisciano, University of Salerno (Italy), with the aim to compare the physical parameters, obtained by measuring the sound level, and the psychoacoustics one, acquired by administering questionnaires to a group of students during a soundwalk. Results will show that the higher sound pressure levels will not always correspond to the more annoying places. In particular, the main park of the University campus will present a positive soundscape, even though noise from the nearby highway will be highly present. Similar conditions will occur in vibrant areas of the campus, in which the interviews will highlight a good perception of the soundscape, even with quite high sound pressure levels.
An analysis of the noise pollution influence on the housing prices in the central area of the city of Bari
Authors: Morano P , Guarnaccia C , Tajani F , Di Liddo F , Anelli D 
Published: September 2020

Abstract
With reference to the European goals concerning the noise pollution control, the present research aims at verifying the existence and, eventually, determining the influence level of the acoustic component on the selling prices in the residential segment. The analysis has been contextualized to the city of Bari (Southern Italy) and the study sample concerns one-hundred residential units recently sold, for which the main influencing factors in the selling price formation processes have been identified. The implemented methodological tool is a data-driven technique, that employs a genetic algorithm to identify the functional relationships among the considered variables. The application to the case study has allowed the identification of a model characterized by good statistical accuracy and an algebraic form of simple interpretation, which denotes an appreciable contribution of the noise pollution factor on the housing prices.
Temporal correlations in an urban noise monitoring network
Authors: Benocci Roberto , Eduardo Roman H. , Confalonieri Chiara , Zambon Giovanni 
Published: September 2020

Abstract
DYNAMAP, a European Life project, provides a real-time image of the noise generated by vehicular traffic in urban and suburban areas, developing a dynamic acoustic map based on a limited number of low-cost permanent noise monitoring stations. Traffic noise data within a urban pilot area (Area 9 of Milan), collected by 24 monitoring sensors, are used to build-up a “real time” noise map. DYNAMAP is based on a statistical approach implying that information captured by each sensor must be representative of an extended area, and simultaneously uncorrelated from that of other stations. The study of the correlations among the sensors represents a further contribution in refining the sampling network design.
Evaluation of Single Vehicle Noise Emission in Different Speed Conditions
Authors: Graziuso G , Mancini S , Quartieri J , Guarnaccia C 
Published: September 2020

Abstract
Because of the increase of vehicles number, the evaluation and monitoring of road traffic noise assume a significant role for decreasing risks for human health and managing environmental pollution in urban areas. Noise measurements cannot be performed everywhere, or even in a large number of sites, because of high costs and time consumption. For this reasons, Road Traffic Noise predictive Models (RTNMs) can be implemented to estimate the noise levels, knowing certain parameters needed as input. This paper describes the comparison of the results, in terms of sound power level emitted by a single vehicle, obtained with the application of some Emission Models (EMs) to different simulations of driving conditions. After a preliminary comparison between the models, the evaluation of two indicators, namely the average and total source power level, will be discussed in relation to different conditions of the vehicle kinematics.
Homogeneous problems of elasticity theory for different boundary conditions in the region of the angular cut of the boundary
Authors: Frishter L Yu , Petrov I Yu 
Published: September 2020

Abstract
Mathematical modeling of structures as complicated technical systems includes development of an experimental calculation method of problem solving for areas having different variants of structural shaping (special lines and points, e.g., reentering angles). The notion of stress concentration in an irregular point of the area boundary is losing its sense. Infinite stress and strain are determined in the area of the angular cut of the boundary as solution of homogeneous boundary problems. The singularity of a problem solution depends upon the type of homogeneous boundary conditions, mechanical specifications of the areas, apex angles of the boundary cut. The studies of power-mode strain and stress get especially vital during studies of the stress of multi-part structures in the areas of conjunction of elements made of materials with different mechanical properties in forced deflected mode with ruptural deformation along the contact line (surface) of the elements. The present paper reports on statements of homogeneous boundary problems for different types of homogeneous boundary conditions for a flat wedge-shaped area. A system determinant for determining of proper values is indicated, as well as proprietary solutions of the problem for different variants of the component areas of the wedge, mechanical properties and the cutout opening of the areas boundary.
Autonomous reserve housing in the aquatic environment: designing a self-sustainable floating module
Authors: Kizilova S A 
Published: September 2020

Abstract
The article is devoted to the study of design aspects of the innovative housing of the future: an autonomous reserve floating module. The leading approach to the study is the analysis of implemented and conceptual precedents and experimental modeling. The analysis of precedents revealed the main parameters that an autonomous floating home in the aquatic environment should possess. The identified parameters affect the structure of the dwelling at three levels: layout, operational and technological infill, and the outer shell of the building. The layout parameters are flexibility, versatility, transformability. Operational and technological parameters are the production of resources, water purification, recycling, computerization of production and tracking systems. Shell parameters are: sealed, capsular, biomorphic. The identified parameters were combined within the experimental design model, which can be implemented at the present stage of the development of society. The experimental model has an additional parameter: the ability to connect individual modules into an autonomous network. The research material may be useful for theoretical and practical developments in the field of designing autonomous dwellings for extreme environments.
Strength indices of sand reinforced by foamed bitumen
Authors: Rudgalskiy D , Chusov V , Aleksandrov A 
Published: September 2020

Abstract
The purpose of the article is to determine the dependence of the parameters, the strength of sand reinforced by foamed bitumen on the content of organic binder. Tests were carried out by uniaxial compression using a measuring and computing complex. As a result, the ultimate compressive strength and the parameters of shear resistance are determined. To determine the angle of internal friction by uniaxial compression, a new technique is proposed, based on measuring the angle of inclination of the shear area to the main axes. According to the experimental work, mathematical models of the dependence of strength indicators from the content of organic binder in the Irtysh sand have been developed.
Structure and properties of recycled concrete aggregate
Authors: Larsen O A , Komoleva I V , Tobolev P D , Naruts V V , Badamshin S O 
Published: September 2020

Abstract
The problem of waste reuse from building industry is acute around the civilized world. The construction of infrastructure in large cities increases the amount of building waste. This study presents the possibility of using concrete waste of residential buildings included in the renovation program of the Moscow. The use of recycled aggregates obtained from demolished concrete allows saving the content of natural aggregates in concrete and significantly reducing the amount of waste that pollutes the environment. Their use is possible in structures with the proper concrete mix content with maintenance of the same properties. Recycled concrete aggregates differ from natural aggregates as the former aggregate contain adhered mortar. The content of the adhered mortar in coarse recycled concrete aggregate was determined on fraction of 5-10 mm. In this study, limestone aggregate was used as initial in structure of recycled concrete aggregate. The quantitative content of crushed concrete components was carried out using quantitative analysis. The main characteristics including specific gravity and water absorption of recycled aggregate were determined. The specific gravity and density of aggregate were 2.59 g/cm3 and 1.9 g/cm3, respectively. The water absorption and mortar content were 3.8% and 39.9%, respectively.
Long-term durability of concrete structures
Authors: Berlinov M , Berlinova M 
Published: September 2020

Abstract
The issue of long-term strength of concrete in construction structures is considered, taking into account the features of concrete structure and the impact on the durability of concrete and force resistance to deformation and destruction. An approach to assessing the long-term strength of concrete as a thermodynamic system has been proposed. The effect of the growth of concrete strength at an early age when firming it in different temperature and humid conditions is shown to change the initial module of concrete deformations in time due to the physical and chemical reaction of hardening. The article proposes an approach to building the functions of aging concrete based on the cynetics of the physical and chemical reaction of cement hydration in a concrete mixture using its stehometry. The form of aging functions is presented using the analysis of the chemical reactions of cement hydration in concrete.
Behavior of solutions of an acoustic wave diffraction problem on a set of small obstacles
Authors: Bobyleva T , Shamaev A 
Published: September 2020

Abstract
The article discusses the problem of diffraction of an acoustic wave by a multitude of obstacles (or cavities) enclosed in a finite subdomain of a homogeneous material domain. It is assumed that the distance between obstacles (cavities) is much greater than the size of each obstacle (cavity). Conditions are indicated under which the total influence of obstacles on the transmitted wave is expressed as an additional term of the potential type in the wave equation. Conditions at the boundary of the cavities are accepted as boundary conditions of the third kind. The results of the work can be used in the development of non-destructive testing procedures.
Concrete prestressed poles in the high voltage lines
Authors: Michałek J 
Published: September 2020

Abstract
In the paper the structure of Polish post-tensioned concrete poles used in 1950s and 60s for construction of overhead power lines of 110 kV voltage was described. Short description of precast concrete columns and their foundations are given with respect to technical solutions and durability. The conclusions drawn from long-term exploitation and maintenance were given on the basis of actual and contemporary Codes of Practice. On the background of these solutions modern post-tensioned spun concrete poles were presented as attractive alternative in terms of their economical efficiency.
Assessment of the influence of surrounding buildings on the wind impact on a high-rise residential complex
Authors: Churin P S , Fedosova A N , Gribach J S 
Published: September 2020

Abstract
The paper considers the objects of a point structure in the study of wind effects on built construction objects. According to the presented algorithm, an experimental study of the wind effect in a wind tunnel designed in the city of Moscow was performed. The study was conducted taking into account the environmental impact. The result of the work is a comparative analysis of data on wind exposure.
Calculation of bridge piled foundations
Authors: Kalachuk T G , Chernysh A S , Shirina N V 
Published: September 2020

Abstract
Calculation of piled foundations and their beds is carried out according to two groups of limit states. The design of the piled foundation is selected based on the specific conditions of the building site, which are characterized by engineering survey data, constructional aspects of the designed facilities, and design loads acting on the foundation. The paper provides recommendations on calculating the bearing capacity of piled foundation of bridges supported on non-rocky soil, as well as embedded in rocky soil using the values of the reliability coefficient, provided that it is determined by the results of static load tests. Consideration of these recommendations will make it possible to exclude the adoption of excessively complicated solutions for foundations and construction operations, as well as unjustified rise in the cost of construction.
The use of in-floor convectors in rooms with a large glazing area
Authors: Pukhkal V 
Published: September 2020

Abstract
To prevent the flow of downward cold air from translucent structures into the served area of the room, convectors with natural and forced convection are used, which are built into the floor structure. An analysis of the requirements of manufacturers of convectors with natural convection for the placement of heating elements in the body and the distance from the glazing to the convector showed their inconsistency. A test bench was made for the study of heating systems with in-floor convectors with natural convection. The heat flow of the convector KRKD 43.14.150 (Izotherm LLC, Russia) was studied with various options for the location of the heating element in the installation box: from the side of the room close to the box wall; from the side of the glazing close to the wall of the box; placement of the heating element in the center of the box. The studies were performed at various distances from the glazing to the convector. The test data of the convector “Gulfstream” KRK 20.11.150 (Izotherm LLC) with natural convection with different placement of the heating element, performed by the HLK Stuttgart Institute (Germany), are presented. The simulation of the test chamber and convector was performed using the Axis Engineering FloEFD software package. The conditions for the use of in-floor convectors with natural air circulation are determined.
Accumulated material, workmanship and design errors in the unstable, prefabricated reinforced concrete cylindrical tank
Authors: Maj M 
Published: September 2020

Abstract
There are complex reasons for the failure of prefabricated reinforced concrete material. Those are errors related to putting the concrete structure up, insufficient supervision of material checkup during construction works, design errors, inappropriate usage of other building materials, and in particular mistakes made while linking material elements that do not allow for the complete connection of all individual parts into one monolithic as a whole block. In the case of the biological gas tanks presented in the submitted paper, the following methods applied for measuring the width of prefabricated concrete slabs joints did not prevent the contractor from committing major errors in material resulting in significant imperfections of the tank walls. As a result, the presented tank, which maintains stability for smaller diameters; for large diameters becomes a buckling-sensitive structure. Poorly made joints become places of the buckling wave initiation and drastically reduce critical force. Repeated failures of the same tank with constantly increasing discipline of the facility construction has confirmed low resistance of the tank to the second-order effects, which is strictly related to the usage of the bad material, characterized in detail in the research paper.
Static Load Test interpretation methods of pile base capacity approximation for design of wind turbine deep foundation
Authors: Baca M 
Published: September 2020

AbstractThe bearing capacity of a pile is mainly assessed from a static load test, which is widely considered as the most reliable method of pile testing. The test provides important information about pile behaviour in a subsoil, but often for more precise data it should be performed on additionally instrumented piles. With specially prepared pipe piles static load tests can be performed with a load applied only to a pile base. The results of this test allow on an evaluation only of pile base bearing capacity, although it often requires an application of some of the methods dedicated to analyse the static load test results. In paper some of the methods for evaluation bearing capacity of a pile from a static load test are introduced. Evaluation of pile base bearing capacity by different methods was compared using results of static load tests with a load applied only to the pile base. A discussion of results and future recommendations were also presented.
Using the Analytic Hierarchy Process (AHP) method for selection of phase change materials for solar energy storage applications
Authors: Amer A E , Rahmani K , Lebedev V A 
Published: September 2020

Abstract
Selection of a suitable phase change material (PCM) for thermal energy storage systems is important. There are an enormous number of available PCM and hence choosing a particular PCM for a certain application is difficult. Many researchers rely on their expertise or the material available to use PCM for a specific application. The purpose of the selection of a certain PCM is to choose the best material from the commercially available PCM for a given application. An effective evaluation approach is essential to enhance the quality of the decisions. The issue of choosing a material for different applications can be managed as a multi-criteria decision-making issue. In this paper, the Analytic Hierarchy Process (AHP) method is used to select between five PCM for solar heating systems considering both the technical specification and the criteria of the materials. The selected materials have a melting temperature in the required working temperature range. Seven criteria are used in this study and these include the latent heat of fusion, thermal conductivity of the material, specific heat, density, thermal stability, cost, and corrosion. The results show that the paraffin is the best material from the selected PCM using the AHP method for this solar heating system using all known thermo-physical properties and the weights of these criteria to achieve the objective.
Energy Visions 2035 for Syria
Authors: Jamil A Al , Sidorenko G I 
Published: September 2020

Abstract
The Syria’s energy sector will face major challenges in the coming decades. Demand for primary energy is continuously increasing to 23 Mtoe in 2008 and then is decreasing to 8.9 Mtoe in 2017. The limited resources and supply uncertainty of especially oil and gas will lead to increasing price instability. Electricity consumption is changing similarly and amounted to 15 TWh in 2017. Syrian power plants generate electricity at 17.5 TWh using mostly traditional fuels. One of the important challenges for Syria is restricting access to the required amount of traditional fuels. The optimistic estimate of the gross and technical potential of wind energy over the territory of Syria is obtained. The paper estimates the technical potential at 490 TWh per year, which exceeds the maximum electricity consumption by almost 12 times. The gross and technical solar energy is determined. Scenarios of the growth of electricity consumption and its cover through the use of various energy sources are simulated. For each scenario, carbon dioxide emissions estimates for Syria were obtained. The most rational scenario for the development of Syria’s energy sector was found. The results show that Syria has huge potentials of renewable energies (solar and wind energy in the first place) and that the exploitation of these sources can solve energy problems in Syria.
Management of the digital transformation of the electricity sector
Authors: Morkovkin D E , Lopatkin D S , Gibadullin A A , Starovoitov V G , Gavrilin A V , Sadriddinov M I 
Published: September 2020

Abstract
The presented study analyzes the existing methods of non-destructive testing of elements of the electric power system, which are currently used in the electric power industry. It was proved in the work that the developed methods for assessing the monitoring of the state of electric power infrastructure facilities should be applied taking into account modern technologies. The work revealed that digital technologies, namely unmanned aerial vehicles, are used in everyday life and industry. In this regard, the study suggested the need to use this method in the electric power industry. Unmanned aerial vehicles must be equipped with video cameras and thermal imagers, so that it will be possible to carry out optical and thermal monitoring of the state of the elements of the electric power system.
Creation of an autonomous energy supply system for isolated territories
Authors: Gibadullin A A , Morkovkin D E , Milonova M V , Progunova L V , Isaichykova N A 
Published: September 2020

Abstract
In the presented study, existing design solutions for providing energy supply to various territories were analyzed. In the work, the volumes of electric energy production based on the use of renewable energy sources in different countries of the world were investigated, as a result of which, it was revealed that in some countries, this indicator reaches 50%. However, renewable energy sources are almost not used to provide thermal energy to consumers. As a result, it was proposed to use a design solution aimed at providing hot water supply to rural, remote and isolated territories.