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  • Improving Greenhouse Microclimate Control Efficiency Using Neural Network Technologies and Distributed Embedded Systems

    This paper explores the development and application of a neuro-inspired automated system for greenhouse microclimate control. The relevance of the topic stems from the need to improve the resilience of agricultural production in the context of population growth and climate change. The proposed system architecture includes a hierarchical sensor network based on STM32 microcontrollers, an analysis module implemented on a Raspberry Pi 5 with neural network-based data processing, and a distributed actuator layer. The paper describes telemetry processing methods, device addressing and polling algorithms, as well as neural network models (YOLO and EfficientNetB3) used for plant disease diagnostics. An experimental evaluation of the classification model demonstrated high accuracy and confirmed the system’s capability for real-time operation.

    Keywords: greenhouse automation, microclimate, neural network analysis, STM32, Raspberry Pi, deep learning, YOLO, EfficientNet, IoT, plant disease classification

  • Mechanical properties of slurry infiltrated fiber concrete

    The modern building material, slurry infiltrated fiber concrete - SIFCON, has not only high compressive and tensile strength, but also flexibility and ductility. These properties allow it to be used in nodes of building structures that perceive dynamic, shock, explosive loads, friction, as well as in the area of penetration of reinforced concrete slabs by columns. The paper describes experimental studies of the mechanical properties of samples from ordinary concrete and SIFCON. A comparison of the test results showed the superiority of SIFCON strength indicators over ordinary concrete by 2-4 times. For a wide range of specialists and students in the field of construction design, production of building materials.

    Keywords: slurry infiltrated fiber concrete, steel fibers, cement mortar, flexibility, plasticity, energy absorption, water-cement ratio, superplasticizer, compressive strength, bending strength, splitting strength

  • Simulation of the formation of cavitation bubbles in axial valves

    The article discusses the process of formation of cavitation bubbles. One of the effective designs of regulating equipment is an axial type valve, for which a mathematical description of the process of formation of cavitation bubbles has been developed. This description allows you to evaluate the bubble structure depending on the main operating and design dimensions of the valve.

    Keywords: valve, cavitation bubbles, probability, functions

  • Evaluation of the effectiveness of the use of ash and slag mixtures of thermal power plants in highway structures

    The use of ash and slag mixtures of thermal power plants in the structures of road coverings of highways makes it possible to significantly increase the volume of their reuse. One of the promising directions is their application in the compositions of stabilized soils. To assess the effectiveness of the use of these materials, such indicators as the cost of construction and the total thickness of the pavement structure are used. According to the results of the conducted research, it was found that the reduction in the total thickness of road clothing with layers of ash and slag mixtures of CHP compared with layers of traditional materials was up to 48%, the reduction in the cost of building road clothing structures using ash and slag mixtures is up to 21%.

    Keywords: stabilized soils, ash and slag mixtures, road clothing, base of road clothing

  • Improving the processes of concreting monolithic structures

    The article reveals the topic of improving the processes of concreting monolithic structures. An absentee survey of respondents from among the existing manufacturers of works, construction control engineers and foremen was conducted. Information was obtained that is not always reflected in documentary sources or direct observation. The direct processes of transportation, feeding, laying and care of the concrete mix, as well as related processes, were monitored and analyzed.

    Keywords: technologies, organization, technological process, concrete works, monolithic structures, operational control, construction control, economic potential

  • Experience of integrated domestic systems for information modeling of infrastructure on the example of Vitro-CAD Common Data Environment and Topomatic Robur software

    More attention is being paid to the transition to domestic software with the digitalisation of the construction industry and import substitution. At each stage of construction, additional products are needed, including CAD and BIM. The experience of integration of Russian-made systems for the tasks of information modeling of transport infrastructure and road construction is considered. Within the framework of the work the integration of Vitro-CAD CDE and Topomatic Robur software system was performed. Joint work of the construction project participants in a single information space was organized. The efficiency of work of the project participants was determined due to the release from routine operations. Integration experience has shown that the combination of Vitro-CAD and Topomatic Robur allows to manage project data efficiently, store files with version tracking, coordinate documentation and issue comments to it.

    Keywords: common data environment, information space, information model, digital ecosystem, computer-aided design, building information modeling, automation, integration, import substitution, software complex, platform, design documentation, road construction

  • Approach to modelling the yield curve as a multivariate time series

    The study presents an approach to modelling multivariate time series using parameterisation, using yield curve as an example. The effectiveness of adding parameterisation coefficients to predicates is evaluated, and new loss functions are proposed that focus on modelling the shape of the curve. Prediction models including LSTM, Prophet and hybrid combinations were applied. A Python-based system was developed to automate data processing and evaluation. The method improves the accuracy and interpretability of forecasts, offering a promising tool for financial modelling.

    Keywords: machine learning, financial engineering, stock market modeling, bond market

  • Sufficient condition for stability of a dynamic system of stabilization of equilibrium position and programmed motions

    In the article, based on the estimate of the Euclidean norm of the deviation of the coordinates of the transition and stationary states of the dynamic system, the compression condition of the generalized projection operator of the dynamic system with restrictions is derived. From the principle of contracting mappings, taking into account the derived compression condition of the projection operator, estimates are obtained for the sufficient condition for the stability of the dynamic system of stabilization of the equilibrium position and program motions. The obtained estimates generalize the previously obtained results. Ensuring the stability of the operator of a limited dynamic system is demonstrated experimentally.

    Keywords: sufficient condition for stability, projection operator, stabilization of equilibrium position. stabilization of program motions, SimInTech

  • Dynamics of electromagnetic ferro-powder coupling unit

    The paper proposes and specifies the engineering mathematical model of the drive using a block of ferrofluid couplings and, within the framework of preliminary design, studies its dynamic properties, in the course of which transient characteristics are obtained, allowing to assess the qualitative performance of such a drive and to outline measures for their improvement.

    Keywords: uninterruptible power supply system, automatic regulation, relay voltage regulator, relay system modeling.

  • Basic principles of the development of individual residential territories

    The article examines the principles of developing micro-districts and settlements for individual housing construction. It emphasizes the integration of environmental, innovative, and social aspects into the design and planning processes of such areas. These measures not only enhance the comfort and safety of living but also significantly reduce operational costs, thereby making projects more economically viable. The focus is on the necessity of a comprehensive and interdisciplinary approach to the planning and development of infrastructure in areas designated for individual housing construction. The article also addresses issues related to the infrastructure of micro-districts designed for individual residential development. By analyzing existing practices, it has been found that contemporary urban planning approaches are increasingly oriented toward creating sustainable and comfortable urban environments. A comprehensive analysis of the problem has enabled the identification of the essential components of infrastructure for areas intended for individual housing development. The article underscores that achieving sustainable development in such territories can only be attained through clear regulation of various indicators characterizing these areas.

    Keywords: water supply and sanitation systems, Syrian Arab Republic (SAR), reconstruction, consequences of military operations, urban planning

  • Study of thermal conductivity of promising building material “Corrugated veneer”

    The article presents the study of thermal conductivity of a promising building material “Corrugated veneer”, presents the sequence of the study, develops an installation for research, obtains the thermal conductivity coefficients of the material “Corrugated veneer”.

    Keywords: wood materials, finishing materials, building materials, board materials, veneer, laminated wood

  • Mathematical apparatus systems used in construction control during the construction of monolithic structures of multi-storey reinforced concrete buildings

    The article considers variants of mathematical apparatus systems used in construction control during the construction of monolithic structures. The quality of technological processes in the construction of reinforced concrete buildings determines the existing problems of their reliability and durability. In the course of studying the analytical aspects of assessing the impact of organizational and technical solutions (OTR) on the system of construction quality control of monolithic structures, specialists most often set tasks on modeling the process in question, taking into account the probabilistic nature of the dependence of the system elements. The mathematical devices used in construction control are defined. The technique of improving the efficiency of OTR during construction control has a significant impact on reducing construction time, and also minimizes the number of defects and deviations.

    Keywords: construction control, mathematical tools, OTR efficiency, monolithic reinforced concrete construction, quality, physical wear of load-bearing structures

  • Spatio-temporal structure of metageosystems in regional geoportals

    The article is devoted to the solution of the problem of forming mechanisms for ensuring sustainable functioning of natural and man-made risks management processes in territorially distributed organizational systems determined by both the spatio-temporal structure of the enclosing natural landscapes and the characteristics of man-made impact. The article presents and substantiates the position that regional geographic information systems and geoportals should play a key role in the risk management system. The example of the regional GIS "Mordovia" and the geoportals "Metageosystems of Mordovia. Spatial data of the region" and "Natural and cultural heritage of the Republic of Mordovia. Traveling with the Russian Geographical Society" shows the possibility of using an analytical approach to the analysis of geosystems of various hierarchical levels to solve the problem of risk analysis in territorially distributed organizational systems.

    Keywords: geographic information system, geoportal, risk analysis, spatial data, geosystems, geographically distributed organizational system

  • Energy efficiency of fire-tube boilers in modern heat supply systems

    The purpose of this work is to study the thermal stress of the furnace of a fire-tube boiler and its effect on the design of the boiler. To study the effect of thermal stress and furnace proportions on the ratio of heating surface areas, the calculated resistance was tested. Calculations of heat-tube boilers of sectional hot-water boilers with different proportions of the furnace at different thermal loads of the same furnace volume are performed. The calculation of each heating surface is carried out by the method of successive approximations, based in this case on the chord method. In the calculation process, the flue gas temperature at the outlet of the heating surface was first set, and then refined by successive approximations. To reduce the overall balance of the boiler, another global approximation is made when the temperature determined at the outlet of the last heating surface is set at the beginning of the calculation – in the heat balance, where it affects the loss with outgoing gases and the efficiency of the boiler. It is determined that the optimal.

    Keywords: energy efficiency, fire-tube boiler, heat supply, thermal voltage, resource conservation

  • Processing of measurement information from an eddy current sensor during localization of defects in the surface layer of bearing parts

    The problem of determining the area of defects in the surface layer of bearing parts according to eddy current non-destructive testing is considered. Methods of processing eddy current control data are given. The possibility of using a robust median polishing method to increase the information content of eddy current data is substantiated. It is proposed to use a sliding window, a standard deviation calculation, and a production rule formed by the Shannon information entropy criterion as tools for localizing defect patterns in the eddy current image of the control object. The results of the application of the developed localization algorithm based on eddy current control data of bearing parts obtained in real production conditions are presented.

    Keywords: eddy current control, localization, defect, data analysis, recognition, surface layer, intelligent technologies, Shannon entropy, median polishing, classification problem