bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experience of cosmogeological research on the basis of GIS-technologies (in case of South Nuratau)
Authors: Togaev Isomiddin , Umurzakov Rakhimjan , Nurkhodjaev Anvarbek , Romanov Sayfulla , Akmalov Shamshodbek 
Published: October 2020

Abstract
The purpose of the study is the creation of a new generation of cosmogeological maps-remote fundamentals of the study area based on the integrated use of satellite imagery using GIS technologies. Earth remote sensing (ERS) materials in the form of aerial photographs have been widely used for a long time in regional geological surveys, structural and geological studies, mineral exploration, hydrogeology and engineering geology, and many other areas of fundamental and applied geology. On their basis, thematic methods of geological interpretation of remote sensing materials were developed. As a result of the scientific and technological revolution, space research already significantly affect the acceleration of the pace of development of geological science and technology and bring a great economic effect. At present, the materials of digital satellite images obtained from Landsat 7.8 TM, Aster, etc. satellites and the method of their interpretation have led to the creation of a new type of cosmogeological maps - remote bases. The purpose of the research is the creation of a new generation of cosmogeological maps-remote fundamentals of the study area based on the integrated use of satellite imagery using GIS technologies. The article provides information about the remote basics of the cosmogeological map based on GIS technologies.
Structural tensors of generalized Kenmotsu manifolds
Authors: Abu-Saleem A , Kochetkov I D , Rustanov A R 
Published: October 2020

Abstract
The paper introduces the Kirichenko structural tensors of generalized Kenmotsu manifolds, called the first, second, and third structural tensors. The properties of structural tensors of generalized Kenmotsu manifolds are studied, analytical expressions of structural tensors are obtained, and covariant differentials of structural tensors are calculated.
Analog-to-digital data processing tools in the construction industry and in the transportation sector
Authors: Konikov A I , Fedoseeva T A 
Published: October 2020

Abstract
In many applications in the construction industry and in the transportation sector, it is necessary to convert the original analog information into digital form and transmit this information for further computer processing using the appropriate interface. The question of the correct choice of conversion means (analog-to-digital converters, ADC) and transmission means (interfaces of peripheral devices) is very important because the characteristics of these devices largely determine the quality of the system. Meanwhile, in this area there is a fairly wide range of modern solutions, new trends are observed, which should be taken into account by system developers. Often systems are operated in conditions of high levels of industrial noise and interference. In a number of applications, it is required to process the signals of sensors (for example, building condition sensors) with very high accuracy with moderate processing speed requirements. The choice of a solution is significantly affected by the fact that modern building condition monitoring systems, automated control systems for technical processes in construction, and other systems are built on the basis of microcontrollers. In this study, the above issues are considered comprehensively, on the basis of this, possible solutions are proposed, practical recommendations are given.
Intelligent street lighting technologies for transport operation
Authors: Voskresenskaya Elena , Vorona-Slivinskaya Lybov , Tilinin Yury 
Published: October 2020

Abstract
The paper discusses a modern concept of smart street lighting that for illuminating city streets implies the use of special street lamps controlled via intelligent platforms. These platforms can regulate the intensity of lighting according to environmental conditions. At daybreak or when there is no people around, lamps’ brightness automatically decreases (or the lights entirely go down), which helps save electrical energy. As the result, expenditures from public funds on street lighting are reduced and the impact of electric power stations on the environment decreases. Street lighting is an essential part of the city infrastructure, since it performs several functions at ones. Firstly, it provides a sufficient level of illumination for traffic networks and pedestrian areas at night time, which not only enables reducing the number of traffic collisions and injuries, but also makes life of car drivers more convenient. Moreover, properly designed street lighting including street lamps on avenues, boulevards and in yards reduces the level of urban crime. Street lightning in Russia annually consumes approximately 7 billion kW/h of electric power, which is equivalent to 16 billion rubles. While producing such an amount of electric energy, millions of tons of various exhausts pollute the atmosphere. Smart street lighting systems help reduce the demand in electrical energy for outdoor illumination. The most important indicator of a civilized city is a well-lit roadway for transport – motorways. For transport on roads, various street lighting fixtures are used, but the most popular are energy-saving gas-discharge lamps, which effectively achieve full compliance with the standards and requirements for road lighting.
Architecture of cross-platform videoconferencing system with automatic recognition of user emotions
Authors: Duboyskii Ilya , Shabanova Aleksandra , Sivchenko Oleg , Usina Elizaveta 
Published: October 2020

Abstract
This paper considers implementation of the technology of automated detection of emotional condition and video conferencing technology for remote content delivery, such as transport communication systems, polls, lectures, psychotherapy sessions, etc. To establish remote communication sessions a platform-agnostic peer-to-peer architecture was developed. Convolutional neural networks are used for stream processing at the operator end, being utilized to estimate the emotional feedback of the customer. To define the emotional condition, three modalities (video, audio, text), as well multimodal recognition were used. Experiments for 10 pairs of humans were performed, where one of them acted as an operator and asked closed questions, whereas another answered these questions. The neural network shows the following average accuracy values for the individual modalities: video 76 %, audio 57 %. The best output is ensured by multimodal recognition (average accuracy of 80 %). These findings confirm the efficiency of multimodal recognition in videoconferencing systems for classification of human emotions.
Geometric modeling of the parallel approach method in some transport problems
Authors: Dubanov A A , Seveen A E , Tsyrenzhapov N B 
Published: October 2020

Abstract
This article presents a quasidiscrete geometric model based on the problem of simple pursuit on a plane by the method of parallel approximation. Apollonius and the characteristic lines associated with it in this geometric model for a predetermined trajectory are in the optimal path of the pursuer. The geometric model is also used in solving some transport problems: visualization, construction of calculation grids, etc. Modeling was performed in the computer mathematics system MathCAD. Based on the simulation results, an animation clip was created, where you can view the movement and transformation of the Apollonius circle and associated characteristic points and lines.
The effect of humidity on the tribological behavior of the carbon-carbon composite in brakes
Authors: Alisin V V 
Published: October 2020

Abstract
The article is devoted to the study of the humidity effect on the antifriction properties of a carbon-carbon composite material under the brake-applied mode. The effect of friction coefficient reducing due to the hygroscopic properties of this carbon composite is justified. The change in the friction coefficient and the composite structure during braking is investigated. In a macro scale it is shown that the structure of the samples working surface is isotropic both in the initial condition and after friction, which is due to the specific location of the fibrous carbon filler (reinforcing frame) in the volume of this carbon-carbon composite material. Based on the theory of errors, metrological assurance for evaluating the reproduction of experimental data was performed. Based on the obtained quantitative data on the reduction of the friction coefficient and the “drying” time of wet friction surfaces, practical recommendations are defined to ensure the effectiveness of vehicle braking arrangements.
Method for obtaining a differential equation of the asphalt concrete mix behavior under railway transport load
Authors: Shishkin E A , Kovalenko A S 
Published: October 2020

Abstract
The use of asphalt concrete in the railway track construction allows you to ensure high strength and stability of the railway. The supporting asphalt layer is subjected to force from the railway transport. The study of material behavior under load is of great practical importance. Rheological modeling is a popular tool for studying the behavior of a material under load. The accepted rheological model is described by the corresponding differential equation. Establishing the initial conditions of a differential equation is difficult if its order is 2 or higher. The article describes an establishing initial conditions method for solving the rheological equation of the model. The model’s behavior analytical description over an infinitesimal time period allows you to set initial conditions. The proposed method for establishing the model equation initial conditions simplifies the process of material under load analytical description. This approach to the asphalt concrete layer under load study allows a more conscious approach to the choice of its parameters when designing the railway track elements.
The study of the dynamic problem of vibrations of a reservoir with liquid on an elastic foundation
Authors: Pavlova A V , Rubtsov S E , Telyatnikov I S 
Published: October 2020

Abstract
A limited or semi-limited layer of a compressible liquid is usually adopted as model of hydro constructions of various purposes. This paper presents the results of analytical study of the distribution of contact stresses at the interface between an elastic layer and a limited pool of liquid. In the system «elastic medium – liquid» the harmonic oscillations are excited by surface vibration source. In this work the integral equation of the first kind with kernel depending on both difference and sum of the arguments is obtained and solved, the function describing the distribution of contact stresses in the area of contact between liquid and elastic media with consideration of physical and frequency factors is also built. The described model can be used in the development of more complex models that allow the determination of the main characteristics of the contact interaction in hydroelastic «liquid – soil» systems.
Experimental studies of the transport speed of immersion of pea grains in liquid
Authors: Saitov V , Farafonov V , Saitov A , Malykh T 
Published: October 2020

Abstract
The basis of leguminous crops is peas, which have a food value for human nutrition. Peas are also used as concentrated and green feed, silage, hay, and hay flour. Pea seeds are susceptible to various diseases. One of the main reserves for increasing the production of pea grain is the use of seeds that are cleared of various impurities for sowing and pre-treatment with chemical preparations against pathogens. An effective method of protecting pea seeds from various diseases is wet treatment with bactericidal preparations with the simultaneous use of biologically active substances. To develop a device for processing seeds by wet method, research was conducted on the transport speed of immersion of spherical grains in liquid. When conducting practical experiments, we considered the movement in a liquid with a density of ρzh = 1000, 1090 and 1150 kg/m3 of individual pea grains of the Vita variety (spherical shape) with a moisture content of 14%. Sodium chloride salt (NaCl) was used to change the density ρzh of the liquid. To obtain more reliable information, the experiments were performed three times over. The temperature of the surrounding air and liquids of different densities was 20 °C. The data obtained were processed using one of the methods of variation statistics. It was found that in water (ρzh = 1000 kg/m3) the confidence interval of the transport speed of immersion of single grains with a reliability of, and in an aqueous solution of sodium chloride (NaCl) with a density of ρzh = 1090 and 1150 kg/m3, respectively, 0.10-0.28 m/s and 0.09-0.23 m/s. This approach to determining the transport speed of grain immersion in liquid can be used in the development of a machine for etching pea seeds using a wet method.
Development of a system for electric power consumption control by electric rolling stock on traction tracks of locomotive depots
Authors: Istomin Stanislav 
Published: October 2020

Abstract
The paper deals with the problem of increasing the energy efficiency of train traction. The analysis of energy resources consumption of JSC “Russian Railways” is made and options for saving fuel and energy resources of the company are formulated by reducing unproductive losses of electricity by electric rolling stock of railways during their standstill on traction tracks and at points of turnover of locomotive crews. The analysis of existing methods of control of electric power consumption by electric rolling stock on traction tracks of locomotive depots is performed. The considered manual control method has the following disadvantages: the lack of completeness, timeliness and reliability of data on electricity consumption. The second method, which consists in installing measuring systems on the feeders of traction tracks, has the following disadvantages: it does not allow automated metering and rationing of electricity with details on the operations performed (shunting movements, heating of electric locomotives), drivers, series of electric rolling stock, as well as legitimately attributing unproductive electricity consumption and damage from it to the involved structures (Traction Directorate, Directorate for repair of rolling stock, LLC “STM-Service”, LLC “TMH-Service”, Directorate of motor car rolling stock). The third method, which consists in installing a low-voltage power supply device on traction tracks, is not applicable when operating electric locomotives at low temperatures, since in this case it is necessary to warm up powerful consumers, such as liquid pumps, oil pumps, motor-compressors, motor-fans, etc.; most of the electric rolling stock is not equipped with specialized sockets for connecting a low-voltage power supply device, which limits the serial implementation of this device. An alternative system of control of electricity consumption by electric rolling stock traction on the tracks of the locomotive depot was developed, which has the following advantages: implementation of automated metering and rationing of electricity with details on performed operations (shunting moving, heating of electric locomotives), drivers, series of electric rolling stock; improving the reliability of electricity metering; implementation of the possibility of attributing unproductive power consumption and damage from it to the involved structures (Traction Directorate, Directorate for repair of rolling stock, LLC “STM-Service”, LLC “TMH-Service”, Directorate of motor car rolling stock); elimination of the need for additional research for new series of electric rolling stock being put into operation; development of scientifically-based measures to reduce power consumption.
Mathematical model of the vehicle taking into account the turn and reduction of tire friction
Authors: Efimov A , Kireev S , Korchagina M , Lebedev A 
Published: October 2020

Abstract
This work presents a mathematical model that takes into account a turn of a vehicle and the movement of the vehicle on a supporting surface with various friction properties in order to research the effect of a kinematic mismatch and friction decline to a coefficient reflecting the losses on wheel slip of a wheeled vehicle. According to the suggested approach, it is possible to select the type of an interaxle drive by comparing effectiveness of quantity indexes of the interaxle drive, while analyzing the full range of road conditions.
Control system of electric traction drive of electric vehicle
Authors: Pechenkina N V 
Published: October 2020

Abstract
The growth rate of electric transport production is increasing every year, so the issues of its improvement and development are relevant. The developmentof a traction electric drive control system that would meet all the requirements, it is the aim of the article. There is a strong weakening of the field, providing a quick change in torque. The results of the created electric drive system are obtained with simulation in the MATLAB. The control system provides the engine in traction mode, recovery mode, reverse, and also allows you to develop high torque at low speeds. The result is a trapezoidal velocity diagram and an almost rectangular moment diagram. When operating at higher speeds up to 400 rad/s, the system works stably. At higher speeds, moment fluctuations appear and dynamics deteriorates. Fluctuations in flux linkage are observed at a speed of more than 700 rad/s. The modeling also showed that the system maintains a constant voltage in the field weakening mode. The development of the control system in order to increase the torque at low speeds is possible due to the introduction of the controller of the balances of the real current of the machine and the current calculated in the engine model. The introduction of a dynamic field attenuation circuit serves to provide high torque when it is not possible to further increase the voltage of the motor stator.
Go-carting vehicles with electric drive
Authors: Guskov A 
Published: October 2020

Abstract
The article describes a number of technical solutions that made it possible to develop Russia’s first electric car for domestic go-cart racing, with a power reserve of 40 minutes of active driving, acceleration from 0 to 60 km / h in 9.5 seconds, with the ability to reverse, with functions energy recovery during braking. As battery cells, lithium-iron-phosphate cells were used. The article provides a calculation of the optimal battery capacity, based on the requirements for the mass-overall performance of the machine. The results of test runs of a serial model of cars with a power of 5 and 10 kW are presented. The calculations of the economic payback of a go-cart club equipped with electric traction machines are presented. The E-Cart, developed by teachers and undergraduates of the Department of “Automated electric drive” of the South Ural state University, has high performance characteristics. The technical solutions made it possible to achieve high acceleration dynamics and a range of 30 km. on a single charge, the “evenness” of the machines-the range of speed and torque when the battery charge level is from 15 to 100%.
Investigation of hydrodynamics and convection in the porous car heat exchanger
Authors: Soloveva O V , Solovev S A , Khusainov R R , Yafizov R R 
Published: October 2020

Abstract
Car engine cooling is actual problem today. The work considers the gas flow in aluminium open cell foam material with two different values of the porosity of the medium 0.9 and 0.7. Models of porous media with an ordered and random structure have been created; in both cases, the porous medium is constructed by a set of intersecting spheres. Numerical modelling of gas flow and heat transfer in a porous medium is carried out using the control volume method in the ANSYS Fluent software package (v. 19.0). The results of the calculation of the pressure drop correlate well with the results of calculations obtained by the semi-empirical dependence. Given the best mixing of the flow, convective heat transfer is more intense in the model of a porous medium with a random arrangement of cells. The highest porosity of medium 0.9 provides the lowest pressure drop and increases the value of heat transfer. It has been shown that in a porous medium of any geometry, the Nusselt number increases with increasing Reynolds number. In this case, open cell foam with a random arrangement of pores in space and a maximum porosity of the medium is preferred for use as a heat exchanger in transport.
Visual symbols as a tool of transport logistics in university environment
Authors: Pozdeeva E , Evseeva L , Tanova A , Kobicheva A 
Published: October 2020

Abstract
The development trends of the educational space in the direction of the increasing introduction of intellectual technologies actualize the study of visual symbols being used as transport logistics tools in management of educational trajectories of students. Visual symbols serve as markers indicating space and help students’ navigation by forming their identity, including professional one. The article analyzes the data of a sociological study of the visual elements of the educational environment of Peter the Great St. Petersburg Polytechnic University, conducted among students. The conclusion is made about the importance for students of the prestige of the university, traditional symbols, virtual attributes, as well as elements of everyday learning life as important components of the educational environment, which allows us to raise the question of the possibility of using these tools to improve their logistics on their way to developing professional competencies.
Experience in digitizing the services of public authorities in the transport sector
Authors: Savin I M , Sinenko S A 
Published: October 2020

Abstract
In the modern world, computer technologies 3D and VIM-modeling are being used more and more often, often you will not find architects drawing by hand. Digitalization of the construction industry is developing rapidly and in various directions. Modern construction organizations are actively introducing information technologies into their professional assets, which, in turn, will include the following business processes: starting from personnel selection, accounting, internal document management, planning, development and placement of advertising, search and customer support, procurement, production of goods, performance of work, provision of services, ending with control over the execution of contracts, and many others. Technologies of augmented reality, the Internet of things, 3D-printing, generative design, machine learning, technologies including three-dimensional representation of buildings and structures, premises and many other technologies that help make various decisions are of particular importance. The article outlines some considerations about digitalizing the functions of a contractor, technical customer in the construction of buildings. The future is fast approaching, and we are moving towards technological singularity. The issue of digitalization of the functions of a contractor, technical customer in the construction of buildings is relevant in modern conditions. Taking into account the importance of the changes that are taking place, it is necessary to start using BIM modeling for the contractor, technical customer, intended for use by the public and private customer, developer, technical customer, and contractor in order to plan and implement information modeling processes for construction projects.