bluuebunny/crossref_metadata_2025 huggingface dataset:
Protection of water supply sources from the emergency oil spill on the water surface
Authors: Akhtyamov R , Titova T S , Glazkov D V , Gavrilin I I
Published: December 2021

The article provides an algorithm for organizing oil spill response on the water surface, as well as the results of the analysis of existing methods of oil and oil product spill response. In order to improve the complex of measures to eliminate oil spills on the water surface, the main requirements for oil-absorbing materials are given. It is shown that the localization and elimination of oil and oil products spills on the water surface due to the destruction of the underwater passage of the main oil pipeline requires a set of works that require the use of various methods and the use of the necessary technical means. The developed set of measures for organizing work in response to oil spills on the water surface and the results of the analysis of existing methods for responding to oil and oil products spills will reduce the time for containment and response to the spill, taking into account the optimal choice of technology for cleaning the coastal strip from oil pollution.
Evaluation of the geoecological and fire situation in case of the oil spillage on the water surface
Authors: Titova T S , Akhtyamov R , Bondarenko V V , Pavlova V L
Published: December 2021

The work provides an assessment of the geoecological situation during an oil spill on the water surface. The modeling of the process of oil burning on the water surface is carried out, and also a model for estimating the oil burning time during depressurization of the underwater passage of the main oil pipeline is proposed. The assessment of individual and social risk in case of ignition of an oil spill as a result of depressurization of the underwater crossing of the main oil pipeline is given. The fire risk assessment was carried out under the condition of a guillotine rupture of the underwater pipeline, since, despite the lowest frequency of this type of depressurization, the levels of exposure to damaging factors, due to the largest volume of oil spills, will be maximum and will make the main contribution to the magnitude of the fire risk. When forecasting an emergency, a model of the spread of an oil slick along the water surface of a watercourse was developed, which takes into account the wind speed and the speed of the river flow.
Changes in the kinematic viscosity of engine oil during the operation of marine diesel engines
Authors: Zhukov V , Melnik O , Khmelevskaya E
Published: December 2021

A prerequisite for the long-term and safe operation of marine diesel engines is the high quality of operational materials, which include engine oils and coolants. The required quality of operational materials is ensured by the introduction of additives into their composition, which are now increasingly used as nanoparticles. During operation, as a result of the destruction of additives, the operational properties of coolants and engine oils deteriorate. The conducted studies allowed us to evaluate the change in the lubricating ability of engine oils of two brands that are used in marine diesels during operation. As a characteristic of the lubricating ability of the oil, its kinematic viscosity was used. The experimental determination of the kinematic viscosity of engine oil samples having different periods of operation, and the subsequent mathematical processing of the experimental results made it possible to determine the dependencies characterizing the change in the kinematic viscosity of engine oil during its operation. The research results confirm the possibility of scientific justification for extending the use of marine diesel engine oils, which reduces operating costs and increases the environmental safety of marine diesel engines.
Assessment of the intensity of engine oil contamination during operation
Authors: Zhukov V , Melnik O , Khmelevskaya E
Published: December 2021

The acceleration of internal combustion engines leads to an increase in thermal and mechanical loads on the most critical parts. To ensure the required resource indicators in conditions of increased loads, it is necessary to use high-quality lubricants, the requirements for the operational properties of which are also steadily increasing. In order to ensure the necessary physical and chemical characteristics of engine oils, additives are introduced into their composition, but during operation the quality of engine oil decreases, the reasons for this are both the destruction of additives, and the accumulation of dirt particles in the oil and the ingress of fuel and coolant into the oil. The conducted studies are devoted to determining the intensity of engine oil contamination under operating conditions in the Wärtsilä 6L20 engine lubrication system and the effectiveness of the dispersing additives contained in the oil. Samples of Petro Canada and TARO oils brands were used as prototypes at the beginning of the operational period, at the time of average operating time and at the time of oil change. The dispersing ability of the oil was determined by the method of assessing the oil stain. According to the results of the research, it is concluded that when the properties of the oil change as a result of contamination, their dispersing ability remains satisfactory. This result can serve as a justification for extending the service life of engine oil, provided that its properties are monitored during operation.
Simulation model as a tool for handling equipment operation diagnostics
Authors: Ezhov Yu , Zub I , Zhuravlev A
Published: December 2021

Efficiency of handling equipment reduces the service time of vehicles arriving at the container terminal. A simulation model of the operation of handling equipment allows reducing the time for diagnosis handling technique with its failure. The model constructed by means of apparatus of Petri Nets the formalism of Petri Nets provides the precision of definitions and reflects the structural and logical connection of the simulated events. The visualization and simplicity of Petri Nets allows the technician has no special training to use these models. This paper examines the reach stacker model, these types of machines that used in container terminals. A Petri Net simulating the operation of the reach stacker – hierarchical, has a built-in network positions. Hierarchy of networks identified position to ensure secure operation techniques, conflict situation, and analyzed solutions. Position having the chips are nodes, which can cause failures.
Study of cooling properties new quenching media
Authors: Bogdanova N , Kuzmin A , Tretyakov D
Published: December 2021

The paper presents the results of testing the cooling capacity of a number of quenching oils using the device “IVF SMART QUENCH” of the company [[CHECK_DOUBLEQUOT_ENT]] IVF [[CHECK_DOUBLEQUOT_ENT]] (Sweden). The tests were carried out in order to expand the range of suppliers, to find alternative quenching media that match the cooling characteristics of traditionally used quenching oils. Both new and traditionally used quenching oils for volumetric quenching were tested. The cooling capacity characteristics of the Voltes 16 and Voltes 26 quenching oils were tested in comparison with the Thermo Oil 16 and Thermo Oil 26 oils used. The characteristics of Thermo Oil 16 and Thermo Oil 26 quenching oils in the “before operation” state (selected from storage tanks) were evaluated, and in the “during operation” state (selected directly from the quenching tanks). Based on the results obtained, the quenching media Thermo Oil 16 and Thermo Oil 26 produced by “TNK Lubricants” LLC in Ryazan are recommended for further practical use. The paper uses methods of statistical data processing to determine the characteristics of the stability of technological processes - the reliability and suitability indices.
Study results of the choice of barium salts reagents for wastewater treatment from sulfates
Authors: Girikov O , Matyushenko E , Voitov E
Published: December 2021

The research on the removal of sulfates from mine wastewater is presented in the article. A new purification method has been proposed that allows removing a significant part of sulfates by precipitation in the form of barium sulfate. The present studies were devoted to the removal of sulfates from mine wastewater with a sulfate content of 1050 mg/l by introducing various doses of barium-containing reagents, namely barium chloride, hydroxide and barium carbonate. Among the listed reagents, the best results were obtained, using barium chloride and hydroxide. The use of barium chloride with a dose of 2700 mg/l and barium hydroxide with a dose of 3200 mg/l made it possible to reduce the concentration of sulfates below the maximum permissible (100 mg/l) when discharged into a reservoir for fishery purposes. A reliable in operation technological scheme for removing sulfates from highly concentrated mine wastewater has been developed, which makes it possible to reduce sulfates in the treated waste liquid discharged into the reservoir to 100 mg/l and below. In this case, the purification is carried out with separation of streams - in a smaller part (about 26% of the incoming); barium chloride is introduced, in the second - barium hydroxide. After that, the streams are mixed again, settled, sent to the calciner and to the post-treatment facilities and discharged into the reservoir. The resulting sludge is stored in special landfills or is processed to extract valuable components.
Mathematical model for forecasting of violations in the field of veterinary medicine using the Markov chain
Authors: Sokolov A , Batova V , Moiseev A
Published: December 2021

Activities within the field of veterinary medicine require an efficient governmental administration, including planning, programming, accounting and result analysis, in addition to control and supervision. As a result, it is crucial to have a theoretical understanding of the new forms of interaction between executive authorities at different levels and the economic entities carrying out these activities. Therefore, the improvement of the regulations governing this field is highly required. The solution is also linked to the improvement of the current legislation governing socio-economic processes, using a new reliable model. In this context, the main goal of this study is to develop proposals to improve the current legal regulation of administrative infractions in the field of veterinary medicine. The authors of this paper applied a multi-agent approach to identify groups of law subjects. They also developed a mathematical model using Markov chains to predict infractions in the field of veterinary medicine. The model is formed of “transition matrices” and takes into account the various reaction strategies of regulatory authorities. Such a strategy shows the likelihood of committing infractions and can form a basis for reforming the current legislation ruling the conduct of control and surveillance procedures using a risk-based approach.
Description by the method of combustion mass transfer of a gasoline-hydrogen-air mixture and reduction of harm to the environment
Authors: Ismatov J , Matmurodov F , Kholikov A , Abdullaev A , Djalilov J , Muhammadiyev U
Published: December 2021

The prospects for the use of hydrogen in automobile engines have been studied, it is possible to summarize, first of all, in relation to environmental friendliness, renewable and unlimited raw materials and the unique characteristics of the engine, which allows the use of hydrogen without making fundamental changes in modern engines. The norms for the emission of harmful substances into the environment are given and ways to reduce the emission of these harmful substances are shown. The schematic diagrams of the hydrogen electrolyzer are developed and the transfer of hydrogen to the combustion chambers is indicated. The paper describes the combustion process of a gasoline-hydrogen-air mixture using the mass transfer method.
Mathematical modeling of flow hydraulics as a result of the development of the NSM channel open pit (on the example of the Tom river)
Authors: Pilipenko T , Mikhailova T , Panov D
Published: December 2021

Active development of channel pits has begun with the aim of extracting nonmetallic building materials for the construction of cities and towns. When developing open pits, violations and non-fulfillment of compensatory measures in the river bed are possible. As a result of nonfulfillment of these measures, changes in the level regime of the river occur. All these actions lead to disastrous consequences. Therefore, the article considers the section of the Tom River. In its channel it is planned to develop a quarry of nonmetallic building materials. For the section of the quarry, the landing of the water level was determined, through a change in the slope of the free surface and the total drop in the water level. the change in flow rates in the everyday state was analyzed, development of the open pit was taken into account. To visually display the depth of the open pit, a matrix of heights was formed at the site of the Popadeykin deposit of sand and gravel materials. Based on the elevation matrix, a 3-D model of the pit was built, both before and after dredging. According to the data obtained, a possible change in speeds after the development of a quarry was predicted in comparison with domestic ones. The intervals of the velocity of the eroding and non-eroding flow were calculated.
Assessment of the possibility of operating low-pressure hydroelectric facilities in order to improve the conditions of navigation in their lower reaches
Authors: Ageev S , Voronina Ju , Sitnov A , Bik Yu
Published: December 2021

The paper provides an assessment of the projected low-pressure hydroelectric facility operation on the Volga River from the point of view of navigation conditions in its lower reach. The operating mode of the low-pressure hydroelectric facility completely depends on the hourly discharges of the Nizhny Novgorod HPP, located upstream. Significant unevenness in time of the supplied discharges from the Nizhny Novgorod HPP, which, repeating itself when discharging flows into the lower reach of the Nizhniy Novgorod low-pressure hydroelectric facility, can lead to negative consequences for shipping in terms of failure to provide transport passes and necessary depths. It is proposed to reduce the unevenness of discharges by introducing diurnal flow regulation into the low-pressure hydroelectric facility operation, aimed at changing the hydrological regime of the river section to improve the conditions and organize uninterrupted and safe navigation in the lower reach. Achievement of the regulation goal associated with minimization of interval deviations of the supplied flow rates from Nizhny Novgorod HPP from the daily average values and the fulfillment of the restrictions on the hydrological regime of the low-pressure hydroelectric facility ponds, is achieved by two control options (three-stage and two-stage). The study used the methods of mathematical statistics and probability theory, optimization of management decisions. The methodology of the mathematical model limitations’ nonfulfillment elimination for solving the problem and optimization of the low-pressure hydroelectric facility daily hydrograph is presented. Using a specific example, the problem of diurnal regulation of discharges is solved and the obtained effect is described.
Experimental study of the resistance to the movement of trimaran vessels
Authors: Korepanov A , Ronnov E
Published: December 2021

The aim of the work is to develop a method for finding the resistance of a trimaran ship at the initial stages of design, depending on the geometric characteristics of the central hull, outriggers and their mutual position. The program of model tests in the experimental tank is characterized. Based on the analysis of the experimentally obtained data, the graphs of the resistance dependence on the Froude number for the trimaran ship model with the fore, central and stern arrangement of outriggers are presented. A graph of the outriggers’ location influence along the vessel length on its hydrodynamic resistance is also shown. A method for calculating the hydrodynamic resistance for a trimaran vessel at the stages of research design is proposed, which is an adjustment of a single-hull vessel model tests’ recalculation classical principle. One of the developed graphs of the residual drag coefficient dependence on the relative speed according to the Froude number for various central hull geometric characteristics of the vessel, outriggers and their relative position is presented. The analysis of serial model tests made it possible to establish the dependence of the trimaran ship resistance on the geometric characteristics of the central hull and outriggers, and their relative position relative to each other in this study. The method proposed in this work will make it possible to substantiate the best layout of outriggers when solving the problem of optimizing the design elements and characteristics of a trimaran at the research design stage.
Improvement of the method of combined plans for the analysis of channel re-formations of a water body on the example of the oka river section
Authors: Matugin M , Miltsin D , Reshetnikov M , Mazgaleva A
Published: December 2021

The article discusses the ways of improving the method of combined plans for a water body channel reformations analysis on the example of a section of the Oka River. The main disadvantages of the existing classical approach to the analysis of channel processes through the channel surveys separate isobaths’combination are highlighted. A new approach to combining digital models of the river bed relief obtained from the hydrographic surveys results is proposed. Two directions of surface comparison are shown for the subsequent analysis of channel processes. For a qualitative assessment of channel changes, it is proposed to construct a new surface of vertical deformations and visualize it in color gradation or using lines of equal vertical deformations. For a quantitative assessment of channel processes, the use of a cartogram of vertical channel deformations is considered, and the numerical parameters for assessing the stability of the river channel are introduced. For the considered section of the Oka river channel, the main indicators of channel processes were obtained and analyzed using the proposed updated method. Separately, the calculation of the most optimal grid size was performed when constructing a cartogram of vertical channel deformations.
The assessment of distribution of GSM signal on the route with the difficult relief and mainly deciduous wood
Authors: Vegera D V , Zhiba G V , Pisarenko V P
Published: December 2021

This article is devoted to assessment of distribution of radio waves for GSM technology in the range of 900 and 1800 MHz. A fading calculation is conducted for a route with difficult relief with the mainly leafy forest. An imitation design was carried out by means of MATLAB environment for comparison of theoretical and practical results.
Using the Loginom analytical platform to process long-term field experience data
Authors: Chernysheva K , Karpuzova N , Afanasyeva S , Korolkova A
Published: December 2021

The article discusses the capabilities of the Loginom analytical platform for processing long-term field experience data; such software components are used as data transformation (row filter, sorting, grouping, cross-table, cross-diagram, sliding window); preprocessing (editing emissions, smoothing), research (correlation analysis, factor analysis), Data Mining (self-organizing network, clustering) to identify the effect of crop rotations, soil liming, application of various combinations of mineral and organic fertilizers, weather conditions on yield of oats and barley.
Parametric modeling compressed ellipsoid of rotation as the analytic surface
Authors: Kravchenko Galina , Trufanova Elena , Shilyaeva Olga
Published: December 2021

The article deals with the shaping of the analytical surface in the form of a compressed ellipsoid of rotation. In the process of research, the principle of the golden section was applied, an ellipsoid of rotation with optimal parameters for the design of a large-span unique building of the exhibition complex was obtained. To solve the problem of choosing a rational analytical surface in the Lira-CAD software package, three variants of constructive solutions for the frame of the exhibition complex have been developed. The finite element method is used, the most popular numerical calculation method for studying the stress-strain state of large-span buildings and structures. The analysis of the calculation results made it possible to choose the optimal variant of the structural solutions of the building frame. The check of the dynamic characteristics of the proposed structural solution of the building frame is carried out. The obtained results of the dynamic calculation showed the correctness and efficiency of the adopted structural solutions of the building frame.
Approximate methods for calculating the impact of a massive body on a plate lying on the base
Authors: Rukhlenko S A
Published: December 2021

Normal impact of a massive body on a uniformly stretched plate lying on the base is investigated. A hinged round or rectangular plate on an elastic base, or an infinite plate on the surface of an ideal incompressible fluid is considered. The solution to the elastoplastic impact is in good agreement with numerical calculations and experimental data. With a small parameter of elastic collapse, that is, with the developed local plastic deformations, a solution to the problem of impact with rigid-plastic local collapse can be used. Approximate formulas for calculating the main characteristics of rigid-plastic impact are set up.
Internal friction influence on the calculation results and rod system optimization under impulse action
Authors: Grebenuk G , Veshkin M
Published: December 2021

An algorithm for calculating elastic rod systems under the action of impulse loads, using a complex model of internal friction in the material, has been developed and implemented in software. Very short (instantaneous) and extended in time impulses are considered as variants of impulse action. The importance of taking into account the vibration energy dissipation due to internal friction in the material of the structure is shown, considering impulse effects. The implemented software module is used to calculate the dynamic responses of the system in the search for the optimal solution of the control program for the selected variable parameters, target and restrictive functions. The problem of optimizing a flat frame system loaded with static and impulse loads has been posed and solved. An algorithm for finding an optimal solution is considered. Variants of dividing variable parameters into generalized groups are discussed. The minimum volume of material, spent on the structure, is taken as an optimality criterion. Analysis of the influence of the pulse duration of a given value on the calculation results without and with internal friction, as well as a comparative analysis of the optimal designs obtained without and with internal friction in the material and various tolerances for horizontal displacements. The results obtained indicate a significant effect of internal friction on the characteristics of the optimal design, especially with active movement restrictions.
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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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).