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  • Implementation adaptation of extreme filtering to real time

    In the work describes the extreme filtering method and the author's approaches that allow adapting it to work in real time: frame-by-frame processing and the method with signal loading. Further, solutions are presented that can be used to implement the above on real devices. The first solution is to use the Multiprocessing library for the Python language. The second approach involves creating a client-server application and sending asynchronous POST requests to implement the frame-by-frame signal processing method. The third method is also associated with the development of a client-server application, but with the WebSocket protocol, not HTTP, as in the previous approach. Then, the results are presented, and conclusions are made about the suitability of the author's approaches and solutions for working on real devices. It is noted that the solution based on the use of the WebSocket protocol is of particular interest. This solution is suitable for both the frame-by-frame signal processing method and the method with value loading. It is also noted that all approaches proposed by the author are workable, which is confirmed by the time values ​​and the coincidence of the graphs.

    Keywords: extreme filtering, frame-by-frame signal processing method, method with value loading, Multiprocessing, HTTP, WebSocket, REST, JSON, Python, microcontrollers, single-board computers

  • Automation of the process of managing road construction works based on a project-oriented approach

    The article is devoted to the automation of the process of managing road construction works at a manufacturing enterprise. Among the means of communication in Russia, highways are in the first place in terms of length. Construction of new roads, repair and bringing the existing roads to regulatory requirements is a complex process that can be characterized as a project. The process of project-oriented management of road construction works is formalized, project limitations are defined. The enlarged milestones of project-oriented management of road construction works are highlighted, including the stages of initialization and implementation. The categories of system users and their functions are defined. A class diagram of the information system for managing road construction works is provided. An algorithm for the operation of an automated system for managing road construction works based on a project-oriented approach is developed and described in detail. Formalization of the calculation of the percentage of project readiness is carried out based on the significance coefficient. Examples of implementing the algorithm stages in the information system and generating analytical reports in the system are given. The reports generated in the system are described in detail. The economic efficiency of the proposed automation system is substantiated.

    Keywords: road construction works, project-oriented management, highway, automation, reporting, significance coefficient, project, project resources, performance indicator, construction, repair

  • Fortifications of Kabarda of the medieval period

    The ancient fortress located on the territory of the prince's estate of Zabota, on the left bank of the Chegema River, currently located between Lechinkai and Chegem II, is the subject of this article. The article examines the unique Kabardian stone structures, analyzes their distinctive characteristics and compares them with typical stone buildings of the late Middle Ages in Kabardino-Balkaria. In addition, the article examines how the culture and traditions of the region influenced the design of stone products, as evidenced by the architectural solutions used in the construction. The research conducted in this article focuses on the study of archaeological finds in order to reconstruct the history of a particular region and track socio-cultural changes that have occurred over a long period of time. The scientific basis of this study is based on materials collected in museums and bibliographic research.

    Keywords: architecture, fortress, hillforts, fortifications, settlements, residence, fortification, stone structure, North Caucasus, Kabarda

  • Forecasting of the risks of introducing electronic content into the information provision of unmanned aircraft systems

    The article considers the options for visual programming of information support means for software and information complexes for UAV operators training. The main criterion indicators for systematically organizing the set of components for reusing program code are identified. An example of an unmanned payload carrier in various representative forms of visualization is given. A comparison of the labor intensity of developing the specified software and information implementations for the same unmanned robotics object with their normative labor intensity is shown. The variants of content filling during the development of the same material part of the considered device for various aspects of training specialists in the management and operation of UAV are considered. The principle of systematization of components by means of ordering the complexity of presentation and softwarе implementation is shown.

    Keywords: risk forecasting, information support, training of unmanned aircraft systems operators, labor intensity assessment

  • Construction of encoders and decoders for code division multiplexing

    A class of mathematical methods for code channel division has been developed based on the use of pairs of orthogonal encoding and decoding matrices, the components of which are polynomials and integers. The principles of constructing schemes for implementing code channel combining on the transmitting side and arithmetic code channel division on the receiving side of the communication system and examples of such schemes are presented. The proposed approach will significantly simplify the design of encoding and decoding devices used in space and satellite communication systems.

    Keywords: telecommunications systems, telecommunications devices, multiplexing, code division of channels, matrix analysis, encoding matrices, synthesis method, orthogonal matrices, integers

  • On the issue of monitoring monolithic reinforced concrete foundations of machines with dynamic loads from increasing vibration levels of equipment

    The presented program for operation/monitoring of the mill foundation includes monitoring the development of crack width by installing beacons, monitoring the foundation vibration by means of sensors installed in the equipment structure and geodetic monitoring of foundation settlement by means of an electronic tacheometer and a level. Monitoring was performed due to an increase in the vibration level of the equipment installed on the foundation and the detection of foundation defects in the form of cracks and concrete chips.

    Keywords: monitoring, bearing capacity, foundation, dynamic load, concrete, reinforcement

  • Filtration calculation of heterogeneous earth dams on impermeable foundation

    In the practice of hydraulic engineering construction, especially in mountainous and foothill areas, quite often there are conditions under which it is economically advantageous to build a dam reservoir from heterogeneous local materials with different filtration characteristics. As a rule, in such areas near the site of the future dam there is not enough homogeneous construction soil that meets all the requirements. However, it is possible to find soils that differ in water permeability, but in sufficient quantity for the construction of the body of this dam.

    Keywords: reservoir, dam, filtration, soil, section, pool, anti-seepage core, flow, slope

  • Automated security system for container-type mining farms

    The paper describes an automated security system for a mining container: a short circuit protection system for smooth start-up of equipment, temperature control and fire prevention of devices.

    Keywords: mining, electrical safety, temperature maintenance, fire prevention, automated system

  • Review of the problems in the construction of oil and gas facilities in the absence of transport infrastructure

    The article discusses the current problems that arise during the construction of oil and gas facilities in remote regions of the Russian Federation, characterized by the lack of a developed transport infrastructure. The main logistical, technical and economic difficulties faced by companies in the implementation of such projects are analyzed. Innovative solutions are offered to optimize the delivery of equipment and materials, the organization of temporary roads and shift camps. Special attention is paid to the application of modern technologies, such as modular construction and the use of unmanned aerial vehicles for monitoring and delivery. The methods of reducing the environmental burden on fragile ecosystems in construction areas are considered. In conclusion, recommendations are given on an integrated approach to solving construction problems in difficult logistical conditions, taking into account economic efficiency and environmental safety.

    Keywords: oil and gas facility, transport infrastructure, logistics, modular construction, shift method, drone, ecology, optimization, innovation, inaccessibility, northern delivery, temporary road, supply, monitoring, efficiency

  • Database of wooden architecture objects of Karelia

    The article considers the issues of developing a database of wooden architecture objects in Karelia. The database includes 1009 attributed photographs obtained as part of the comprehensive expedition of the Ministry of Culture of Karelia in 1979-1980 and the comprehensive expedition to Syamozerye in 2000-2001. The expedition research was carried out by specialists and students of Petrozavodsk State University under the supervision of Academician Vyacheslav Petrovich Orfinsky. The database was developed in the MySQL database management system. The database scheme is provided, the tables are described, and an example of a photograph with attributes is presented. The database allows storing and editing materials from historical and architectural expeditions and research by employees of Petrozavodsk State University, as well as searching for photographs of wooden architecture objects in Karelia by various criteria, including date, location, type of object, and author.

    Keywords: wooden architecture, database, expeditions, MySQL DBMS, photographs of wooden architecture objects

  • Computer Modeling and Improvement of Extrusion Tooling 

    This paper presents a simulation of square bar extrusion using the finite element method in QForm software. The sequence of simulation stages is described and verified using an example of extruding AD31 alloy. The geometry of the extrusion tool (die) was improved to reduce material damage and eliminate profile distortion. It was found that rounding the corners and adding a calibrating section to the die provides improved performance. The analysis of metal heating from plastic deformation is also provided. The study highlights the importance of computer modeling for optimizing tools and increasing the efficiency of the metal forming process. Specifically, the initial and final die geometries were compared to assess the impact on product properties. Recommendations are provided for using simulation in the practice of developing metal forming process technologies. The benefits of using QForm software over alternative solutions are highlighted, including access to a comprehensive material database and robust technical support. The improved die design resulted in reduced plastic deformation and improved product quality. Finite element analysis significantly accelerates the development and testing of tools, providing the ability to develop optimal designs that account for various factors.

    Keywords: extrusion, die design, finite element method, computer modeling, optimization, metal forming, aluminum alloy, process simulation

  • Strength of glued laminated timber structure with reinforcement of the upper chord of the triangular strut system

    The article considers the strengthening of the upper chord of the triangular strut system as a method for restoring the bearing capacity of a glued laminated timber element according to the 1st group of limit states. The strengthening allowed us to obtain as a result of calculations a strength utilization factor not exceeding the limit value.

    Keywords: triangular spacer system, upper chord, glued laminated timber element, modulus of elasticity, volumetric weight, compressive force, bending moment

  • Qualitative study of the emulsion layer formation model

    The article discusses the basic model of the formation of an emulsion layer on a rotating cylinder. Special attention is paid to the study of the influence of various parameters on the internal characteristics of the emulsion formation process. A mathematical description of the displacement layer is given and functional dependencies between the parameters characterizing the emulsion formation process are derived. Based on experimental data, the qualitative influence of "internal" and "external" factors on the formation of the emulsion layer has been studied. The result of the study were graphs, analyzing which the following conclusions can be drawn. An increase in the viscosity of the emulsion leads to a decrease in such parameters as the boundary of the fracture region of a more viscous liquid layer adjacent to the surface of the rotating cylinder, the viscosity of the emulsion in the transition layer, but there is an increase in the consumption of the emulsion. It is also established that the growth of the complex of "external" parameters leads to a decrease in all internal parameters during the formation of the emulsion. The research conducted in the article will help to take into account the obtained dependencies when calculating the operating and design parameters of devices.

    Keywords: emulsion layer, viscosity, density, emulsion, rotating cylinder, liquid, emulsion composition

  • Computational study of the deformability parameters of truss structures using wood

    Determining the deformability of the bearing structures of the coating, as an indicator of the use of the stiffness of the cross-section of the elements, is an urgent task, which is aimed at solving the current work. The purpose of the article is a comparative calculation of frame structures under the assumption of a different coating truss solution. The following types of load-bearing roof trusses should be considered: segment truss, trapezoidal truss, triangular truss. The calculation of frames using wood as load-bearing structures for the total effect of permanent and short-term loads causing maximum vertical deformations is given. In this paper, the coefficients of using the rigidity of truss structures using wood are determined and the dependence of the stiffness value on the type of outline of the coating truss is established. A comparison of the calculation results with the normative maximum permissible values allowed us to establish the most effective type of outline of the wooden roof truss.

    Keywords: coating truss, modulus of elasticity, stiffness, upper belt, slant, lower belt, computational study, through-hole construction, segmental truss

  • Development of an image recognition algorithm for an automated system for monitoring fiberglass defects based on machine learning methods

    The article proposes an image recognition algorithm for an automated fiberglass defect inspection system using machine learning methods. Various types of neural network architectures are considered, such as models with a firing rate of neurons, a Hopfield network, a restricted Boltzmann machine, and convolutional neural networks. A convolutional neural network of the ResNet model was chosen for developing the algorithm. To develop the algorithm, a convolutional neural network of the ResNet model was selected. As a result of testing the program, the neural network worked correctly with a high learning percentage.

    Keywords: fiberglass, defects, machine learning, convolutional neural networks, ResNet architecture, testing, accuracy