bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of the coefficient of restitution upon contact of a steel ball with aluminum and steel surfaces
Authors: Gusev V G , Sobolkov A V , Aborkin A V 
Published: December 2021

Abstract
In this work, experimental studies on the rebound of a steel ball from aluminum and steel surfaces have been carried out. Using the ideology of the method of discrete elements, a three-dimensional model of the process was built. By carrying out multivariate calculations with varying the restitution coefficient and subsequent comparison of experimental and calculated data on the ball rebound height, the actual restitution coefficient for contact pairs “steel - steel” and “steel - aluminum” was determined. The results of the work will be used in the development of a complex model of high-energy ball milling.
Features of modeling of stress and strain waves in an anisotropic medium on the example of a wooden element
Authors: Romanov P , Sivtsev P 
Published: December 2021

Abstract
This article describes the hypotheses of the occurrence, propagation, and modification of stress and strain waves caused by external loads in isotropic and anisotropic infinite and finite elastic media. A model of an infinite elastic medium experiencing a point external impulse is presented. The model demonstrates the propagation of a longitudinal plane wave. Compaction and rarefaction of the medium are observed in the plane with wave propagation. A graph of changes in the amplitude of a longitudinal plane wave is presented in the same coordinate system. The problem is posed of expanding the numerical model of a finite elastic medium in the form of an anisotropic wooden rod experiencing a plane external impulse. The model should demonstrate the propagation of longitudinal and transverse waves and describe the volumetric deformation of an anisotropic material. Compaction and rarefaction of the medium are shown in the plane, coinciding with the direction of wave propagation. A graph of the change in the shear wave amplitude is presented in the same coordinate system. The combination of these two graphsreveals the difference in wave propagation velocities and the combination of amplitudes. The model will make it possible to identify the presence of Rayleigh waves and to describe the reflection of waves from the boundary of the medium.
Discrete-continuous three-element model of impact device
Authors: Slidenko A M , Slidenko V M , Valyukhov S G 
Published: December 2021

Abstract
There have been examined the mathematic model of the impact device provided for geological materials destruction. Basic elements of the impact device are variable cross-section tool, striker and impact device body. The interaction of these elements is described as a movement of two discrete mass and the rod in the presence of rigid and dissipative connections. One equation in partial derivatives and two ordinary differential equations associated by initial and boundary conditions represent the initial-boundary problem. The numerical method parameters of which are determined at tests problems solution by Fourier method is used for looking for solutions of mixed initial-boundary problem. Researches are made, and parameters determining the damping efficiency of tool, striker and impact device body oscillations are evaluated.
Theoretical studies of the stress-strain state of the elements of joints on glued washers
Authors: Ariskin M V , Vanin I V , Martyshkin D O , Iksanov R T 
Published: December 2021

Abstract
In order to study the stress-strain state of the elements of joints on glued washers, a computational model of a multi-row joint on glued steel washers has been developed. The picture and character of the actual stress-strain state of a wooden element with glued washers are obtained. By analyzing the stress-strain state of the wooden element, the optimal step of the arrangement of washers in a multi-row connection is determined.
Mathematical modeling of stress-strain state of elements of joints of wooden structures on glued fiberglass washers
Authors: Ariskin M V , Martyshkin D O , Vanin I V 
Published: December 2021

Abstract
Design models of single-component and three-component samples were developed on glued fiberglass washers in order to investigate the stress-strain state (SF) of the elements of joints of wooden structures. The picture and the nature of the actual stressed-deformed state of the wooden element with glued washers are obtained. Quite high bearing capacity of wooden structures connection is shown.
Cognitive system for analysis behavioral of dynamic objects of video surveillance
Authors: Marshakov D V , Fathi D V 
Published: December 2021

Abstract
The necessary measures to ensure the safety of technical structures, freight/passenger stations and other transport infrastructure facilities include continuous video monitoring with a comprehensive analysis of the scene. In conditions of high density of numerous objects continuously moving through the observation area, one of the main available signs of detecting anomalies in their behavior is their trajectory of the object. In this paper, we propose an approach to building a system for analyzing the behavior of dynamic video surveillance objects based on their tracking, implemented by means of cognitive modeling. The proposed procedures for intelligent analysis of the nature of movement of video surveillance objects are based on a combination of neural network technologies and the logical inference mechanism of the expert system, which expands the basic algorithms for technical equipment of video surveillance systems. The practical significance of the considered solutions is to increase the efficiency of detecting suspicious situations in conditions of high traffic density by conducting a parallel analysis of the movement of numerous objects of the scene, which entails the prevention of possible illegal actions in places of mass presence of people, including transport infrastructure facilities.
Mathematical modeling and computational methods for a comparative analysis of the use of leasing and lending
Authors: Alukhanyan A , Andreeva L 
Published: December 2021

Abstract
The purpose of the study was to develop an economic mechanism that allows for the digitalization of the process of justifying the profitability of leasing as a source of financing for the technical re-equipment of the fleet of vehicles of a transport enterprise in comparison with other instruments (in particular, credit). The article describes the process of economic and mathematical modeling of a leasing transaction, consisting of the stages of algorithmization and programming. A block diagram of the algorithm for determining the profitability of leasing has been developed. The software implementation uses the capabilities of the multi-window structure of the Pascal programming language. The main indicators of leasing are: lease payment, payment to the lessor for additional services, commission fee to the lessor, etc. The paper also substantiates the main advantages of a leasing transaction over a conventional loan.
Optimization of regional transport networks based on a mathematical model of passenger preferences
Authors: Kostenko V V , Golubtsov V A , Pank R V , Shmidt A O 
Published: December 2021

Abstract
This article presents the results of developing a model for a regional passenger transport network aimed at solving the logistical problem of constructing rational intermodal routes in a defined closed loop. The tools of graph theory and linear mathematical programming have been applied to build the model algorithm, which allows finding solutions for weighted graphs, in the absence of negative weight links, while keeping information about the sequence of hub points on the selected paths. The proposed solutions are versatile enough to be scalable for regions with different network topologies. The model is adapted to dynamically changing and extensible systems, allowing it to be practically applied to justify options for the future development of infrastructure in different modes of transport.
Model for forecasting the dynamics and growth of the throughput of the Central Asian transport corridor lines
Authors: Kotenko A G , Sattorov S B , Nehoroshkov V P , Timuhin K M 
Published: December 2021

Abstract
This article has taken into account the importance of international corridors in Central Asia, and has provided data on the importance of rail transport in the state economy and the efficiency of projects when developing railways. The weakness and lack of import and export logistics functions in the hinterland regions creates a bottleneck that limits the development of the external economy and trade. Identification of development paths using the example of the Akhangaran-Tukimachi-Syrdarya line based on modelling of carrying capacity and comparison with the actual freight flow for rational regulation and rationing of train throughput. The method of approximation has been applied to forecast the dynamics of capacity and throughput growth on the line in question. A forecasting model was developed that corresponds to the nature of changes in the trend of the freight traffic under study. It will allow to foresee difficulties in the transportation process, to work out the line development stages to improve the carrying capacity of hauls, to plan the work of reloading stations correctly and to organise the rational use of railway transport means. As an example, the Akhangaran - Tukimachi - Syrdarya line is the main transit direction which affects all the work of the railway of the Republic of Uzbekistan. Improvement of the line for passing transit and local freight flows will improve the competitiveness of the railway in freight transportation.
Game-theoretical approach to payoff distribution in joint construction of transportation and engineering networks
Authors: Lutsenko M M , Demin A M 
Published: December 2021

Abstract
The article discusses a game-theoretical approach to payoff distribution between the construction participants during the transport and engineering networks construction. The construction participants can be both the owners of land plots or buildings, and the administrative personnel of settlements and states. It is shown that payoff distribution between the participants should satisfy two principles: dominance and fairness. To determine fair payoff, the mathematical apparatus of cooperative games is used and the Shapley vector is calculated. Options for the implementation of a construction project for 4 and 8 participants are being considered. The use of the Lutsenko formula, which greatly simplifies the calculation of the Shapley vector components for the considered problem of transport and engineering networks construction, is discussed.
Determination of the Temperature Graph of Heat Supply With Minimal Heat Losses
Authors: Rafalskaya T , Filatova T 
Published: December 2021

Abstract
Heat losses by pipelines of heat supply systems are calculated for the average temperature of the heat carrier per year or for the heating period for the conditions of a qualitative method of regulating the heat load. The presence of cuts of the temperature graph, the use of other methods of central regulation, are not reflected in the regulatory documents and require special research, which determines the relevance of the work. Heat losses through thermal insulation structures of pipelines have been determined for various graphs of central regulation. Heat losses were determined for each external temperature, taking into account its duration. It is shown that the average linear annual heat losses for most of the graphs correspond to a lower external temperature than the average external temperature for the heating period. Therefore, the calculation must be performed for a higher temperature of the heat carrier than is accepted according to regulatory documents.
A computer program based on spectral analysis for speech correction in children
Authors: Nematov Sh , Kamolova Y 
Published: December 2021

Abstract
Insufficient development of speech and poor command of it interferes, in turn, with its perception by ear, even with the help of sound-amplifying equipment, complicates its understanding, comprehension and transmission of information in the process of communication, at least in an elementary form. Today, in different countries of the world, educational aids are being developed - devices and devices that provide children in need of this with filling the deficit of information about sounding speech, complementing the feedback structure by connecting visual perception. We have developed a computer program “Home speech therapists” to improve speech in children after cochlear implant.
Inverse problems of the dynamics of observation interpretation systems
Authors: Verlan A , Sagatov M 
Published: December 2021

Abstract
Based on the analysis and systematization of the inverse problems of dynamics, the study of the properties and features of the types of dynamic models under consideration, an approach is proposed for the development of appropriate methods of mathematical modeling based on the use and implementation of integral models in the form of Volterra equations of the I and II kind, their functional capabilities are determined in the study of various classes of problems, and also formulated the features that affect the choice of methods for their numerical solution. Methods for obtaining integral models are proposed, which are the basis for constructing algorithms for solving inverse problems of dynamics for a fairly wide class of dynamic objects. Integral methods for the identification of dynamic objects have been developed, which make it possible to obtain stable non-optimization algorithms for calculating the parameters of mathematical models. Recurrent methods of parametric identification of transfer functions of dynamic objects with an arbitrary input action are proposed (the obtained parameters of the transfer functions are also coefficients of the corresponding differential equations, which makes it possible to obtain equivalent mathematical models in the form of integral equations). The study of algorithms that implement the proposed identification methods allows us to conclude about their efficiency in terms of the amount of computation and ease of implementation, as well as the high accuracy of calculating the model parameters.
Method of Fuzzy Parametric Selection for Making a Reasonable Decision by an Intelligent Training Module
Authors: Akperov Gurru , Alekperov Ilgar , Gorbacheva Anastasia , Magerramov Imran , Bocharov Anatoly 
Published: December 2021

Abstract
Selection of an optimal route within the intelligent approach provides for the possibility of applying soft models and computing in estimation of the trainee presence in the knowledge space. Among numerous ways of representation and processing of information of this type, the special place is held by those able to adapt to the maximal number of NO factors, characterizing the actual training situations, their measurable data and actual methods and ways of their processing that have ambiguities, uncertainties and incompleteness of the respective models and methods. In this paper, we suggest to extend the certain well-proven best practices in data analysis and transformation in the training environment information space to solving the actual training management problems. In addition, the paper demonstrates approaches to the use of Pareto-optimal approaches for fuzzy and underdetermined situations in actual training processes. Formally, this problem is solved with a fuzzy systemic graph. Variants of calculating procedures, allowing the use of the available apparatus of soft models and computing with the purpose to eliminate uncertainties when forming grounded decisions, are given. Methods and criteria of route options selection with regard of vaguely defined functional specification requirements have been developed pursuant to the study.
Video Conference Software Inplementation Based on Data Encryption Using Elliptic Curves
Authors: Safaryan Olga , Cherckesova Larissa , Boldyrikhin Nikolay , Pilipenko Irina , Nikishina Tatyana , Medvedev Dmitriy , Lobodenko Andrey 
Published: December 2021

Abstract
Article is devoted to the development of free program services for video conferencing. Proposed system eliminates security flaws found in other developments. Analysis of security model development using elliptic curves and secret key transfer using Diffie–Hellman algorithm is carried out. Currently, video communication software is used everywhere. Main task of such software applications is help to people communicate with colleagues, relatives and friends at great distances. However, it is very important that their conversation remains confidential, otherwise any information said can get to third parties, and then – cost of leaking personal information can change from damage done to one person to damage done to entire states. Therefore, it is so important to use only software products that have passed certification process when communicating where information with limited access will be used. Software tool has been developed that allows creating secure video conferences with ECIES encryption algorithm on elliptic curves, which allows holding conferences without fear of being compromised. Thus, proposed application significantly increases users security, their personal data, as well as confidentiality of their conversations. Developed software product can be used to conduct secure video conference.
Predictive management of enterprise power consumption based on the SINGULAR SPECTRUM ANALYSIS method using recurrent forecasting
Authors: Manusov V Z , Antonenkov D V , Orlov D V , Palagushkin B V 
Published: December 2021

Abstract
Modern energy strategies aimed at the development of energy industry presuppose a significant change in the structure of process of formation, transmission, consumption of electrical energy and increasing energy efficiency by introducing modern technologies at all stages. The growth of capacities of industrial enterprises in the conditions of wholesale market of electrical energy and capacity in the modern energy system determines the need for development technologies of predictive control of power consumption process of these enterprises. The introduction of such technologies at the control rooms of the operational management of enterprises will allow to reduce the number of human errors, the number of emergency stops of technological process, increase the reliability of power system mode, rationally manage the process of power consumption of enterprises. In this regard, forecasting the load demand and consumption is an important stage in the functioning and planning of modern power systems. An accurate, correctly compiled forecast is the key to effective management of energy consumption process and reliable operation of the enterprise. Forecasting errors lead to imbalanced supply-demand, which negatively affects operating costs, reliability and efficiency.
Modeling of systems with a closed loop of material resources circulation
Authors: Podvalny S L , Logunov D V , Vasiljev E M 
Published: December 2021

Abstract
The work is devoted to the problem of artificial realization of the unique property of living systems to self-recovery due to the existence in them of mechanisms of accumulation and closed circulation of material resources. The problem of developing a mathematical model that reproduces the processes of functioning of such systems is being solved. A functional diagram of these processes is built, in which the stages of active use of resources, their recovery and subsequent accumulation as a reserve are highlighted. The formal description of the system is made in the class of stochastic models with continuous time – in the form of a Markov process with a discrete set of states. Analytical expressions for the final probabilities of each of its states were found on the basis of the hypothesis of the Poisson character of event streams in the system. As an assessment of the system’s ability to self-recovery, the probability of its functioning with the maximum amount of resources capable of being processed by the system was calculated. Using a numerical example, a quantitative study of the dependence of this estimate on the main variable parameters of the closed-loop system was carried out: the number of recovery channels, the intensity of these channels, and the amount of resources accumulated in the reserve. The presence of an accumulated stock of resources in the system allows ensuring high indicators of its efficiency with a significant decrease in the requirements for the total intensity of resource recovery.
Research on the Application of 4K+5G Technology for UHD Live TV: Taking China Media Group as an Example
Authors: Fu Li 
Published: December 2021

Abstract
This paper systematically reviews the development history of 4K UHD TV in China, analyzes the innovative application of 4K+5G technology in the field of UHD TV live broadcast, and analyzes its characteristics and advantages. Taking the UHD TV broadcast by The China Media Group(CMG) using 4K+5G technology as an example, this paper analyzes the role of 4K+5G technology in promoting the reform of radio and television programs and its future development direction, so as to provide references for the industry.
Design and research of port automatic magnetic mooring device based on electromagnetic technology
Authors: Zhang Zhijie , Zong Yonggang , Zhao Xiandong 
Published: December 2021

Abstract
With the rapid development of modern science and technology, ship design and construction are becoming more and more large-scale, professional and intelligent, and the degree of integration, intelligence and modularization of port and terminal equipment is also getting higher and higher. Smart ships and wisdom The construction of ports has become an important trend in the development of the shipping industry. Although the rope materials of modern ships have been greatly improved, the main mooring method of ships still relies on the traditional operation method of manual mooring [1], which has low operation efficiency, high degree of danger and high risk factor. This article mainly studies the use of electromagnetic technology to realize the automatic berthing and unberthing of ships. The electromagnetic mooring device is controlled by the remote control system to realize the automatic berthing and unberthing operations of the ship, and the height and angle are automatically adjusted according to the tide and loading conditions to realize berthing monitoring.
Design and research on the fatigue detection system of ship bridge duty based on image processing
Authors: Zong Yonggang , Zhao Xiandong , Ba Zhongfeng 
Published: December 2021

Abstract
With the development of the marine economy, the number of ships is increasing day by day, and is developing towards large-scale, diversified and professional development, and marine accidents caused by driver fatigue have attracted more and more attention. In order to reduce marine traffic accidents caused by fatigue driving of ship drivers and ensure the safety of life and property at sea, it is very necessary and important to study effective methods to detect the fatigue state of ship drivers in real time. This article mainly studies the early warning of ship fatigue driving. In view of the difficulties of the ship fatigue driving detection technology, reasonable performance indicators of the ship anti-fatigue driving image processing and early warning system are proposed; according to the system performance indicators, the HOG+SVM method is determined to automatically track the human face, and the human eye detection and tracking method is designed. Improved the method of eyelid closure to determine fatigue. In order to determine the eye opening and closing state or blinking frequency. The PERCLOS method is used to determine whether the driver is tired, and a warning is given when the ship’s watch driver is tired. The system has the characteristics of non-contact, real-time, etc. and complies with the relevant technical standards of the International Maritime Organization (IMO) on the ship bridge fatigue warning system (BNWAS).