The article presents the results of the second stage of a study to assess the load-bearing capacity of a running meter of a centrally loaded wall of various thicknesses, heights and strengths made of masonry. The second stage includes the study of masonry walls with elastic characteristics α = 200, 350, 500, 750 and is a logical continuation of the first stage, in which masonry with elastic characteristics α = 1000, 1200, 1500 was studied.The results of the study make it possible to minimize the use of a software package for preliminary determination of the bearing capacity of a centrally loaded stone structure and can become part of a practical guide for engineers involved in the technical inspection and design of masonry structures.

Keywords: bearing capacity, wall, stone structure, elastic characteristic of masonry, centrally loaded element, stone, brick, block, masonry mortar, coefficient of longitudinal bending, flexibility

Modeling natural convection from steel panel radiators presents a significant scientific and technical challenge. When heating the radiator's vertical surface, a boundary layer of warm air forms and ascends along the wall. Flow remains typically laminar in the lower section, but as the boundary layer develops, it becomes unstable and transitions to turbulence. Beyond temperature head, transition conditions depend critically on heater geometry. Height, panel count, and vertical finning elements directly impact convective flow formation, where optimized geometry promotes early laminar-turbulent transition and intensified convection. While heat transfer is conventionally evaluated through dimensionless correlations (with Grashof numbers near 10⁹ serving as critical transition thresholds for vertical surfaces, corresponding to ~70°C temperature head at 0.5–1 m height), real-world radiator operation maintains laminar flow in lower zones with upper-height transition to turbulence – a process indeterminable via correlation methods. This study proposes a CFD simulation methodology calibrated against laboratory tests conducted per GOST R 53583-2009, enhancing computational result reliability. The calibrated numerical model ensures high-precision prediction of integral heat emission characteristics. CFD implementation enables preliminary radiator behavior analysis without physical prototyping through parametric variation of geometry and thermal properties. The model is readily parameterized by panel dimensions, finning configuration, and material/medium properties, ensuring computational repeatability across configurations. The proposed calibration method (achieved by imposing experimentally measured heat flux values per GOST R 53583-2009) enhances accuracy in predicting radiator's integral performance metrics and improves model-experiment alignment. This approach guarantees computational reproducibility and flexibility in simulating diverse designs (panel sizes, fin arrangements, materials). Validation challenges persist: Absence of experimental temperature/velocity fields complicates mesh sensitivity analysis, while single-dataset calibration risks model overfitting. Nevertheless, this methodology proves strategically valuable for transitioning toward digital certification of heating devices, as it substitutes physical testing with numerically derived integral parameters of comparable accuracy.

Keywords: heating devices, natural convection, free air flow, heat transfer efficiency, laminar-turbulent transition

The article considers the issues of imitation modeling of fibrous material mixing processes using Markov processes. The correct combination and redistribution of components in a two-component mixture significantly affects their physical properties, and the developed model makes it possible to optimize this process. The authors propose an algorithm for modeling transitions between mixture states based on Markov processes.

Keywords: modeling, imitation, mixture, mixing, fibrous materials

The assessment of the properties of urbanized territories or plots is necessary to determine the most effective use of them and to determine the cadastral or market price. A comprehensive model for assessing the properties of urbanized territories is presented, which is a multiplicative model consisting of two models: an additive model for assessing the properties of the plot under consideration and an additive model for assessing the influence of external factors determined by the adjacent territory. This multiplicative combination of additive models allows for the differentiated determination of the best alternative for different types of plot use based on the influence of internal and external factors when comparing multiple plots at different stages of a development project. To do this, the preference coefficients are calculated using the ratio of the integral estimates of the compared areas. If there are several areas, they can be selected using pairwise comparisons and the analysis hierarchy method.

Keywords: urbanized territory, property valuation, internal and external factors, additive and multiplicative models, development project

The number of information security incidents and the amount of damage caused by them are increasing every year. The relevance of information security incident response remains high. The primary response action is an information security incident localization. The purpose of this study is to reduce the time taken to localize detected information security incidents by information security incident response teams. The purpose is achieved by issuing and using a mandate for information security incident localization by orchestration tools and/or artificial intelligence systems in an automated mode. Analysis and synthesis of available publicly materials were applied as research methods. The results of the analysis and evaluation of different criteria applicability for granting a mandate to localize an information security incident in an incident response are presented in the article. A mandate is granted to orchestration tools and/or artificial intelligence systems to perform localization of an information security incident in an automatic mode, i.e., without the involvement of information security incident response team forces. In evaluation the applicability of various criteria for granting a mandate, unlike the known ones, the level of difficulty in determining values for the criteria in question by information security incident response team forces alone was assessed. Criteria and their values are defined, which, unlike the known ones, highlight the area for information security incidents localization in automatic mode.

Keywords: response team, response area, response, automatic localization, orchestration, artificial intelligence

The article is devoted to the analysis of the process of redesigning industrial buildings in Moscow in the context of urban development of the city. Based on data from the Moscow Department of Investment and Industrial Policy (2023), the current state of industrial zones (hereinafter referred to as industrial zones) is being investigated: 25% of the 150 facilities have already been redeveloped, and over 80 enterprises have been moved outside the MKAD since 2010. Successful transformations (ZIL, Hammer and Sickle, Red October) and criteria for choosing new functionality are considered: location, historical value, ecology, transport accessibility. Using cartographic data, promising areas for renovation (AZLK plant, Compressor, Rubber) have been identified and options for their adaptation have been proposed, from creative clusters to residential complexes. The role of redevelopment in the sustainable development of the city, the need to comply with environmental standards and take into account the needs of local communities is emphasized.

Keywords: Redevelopment, industrial buildings, urban spaces, renovation, industrial heritage, urban development, environmental standards, creative clusters, residential development, public spaces, urban planning policy, industrial zone, sustainable development

The article is devoted to the topic of improving the environmental characteristics of construction sites through the introduction of the principles of "green" construction through a comprehensive assessment of various criteria. Compliance with environmental standards contributes to the creation of a favorable urban environment and ensures comfortable living conditions for residents. The introduction of such approaches is becoming extremely important for sustainable development and the preservation of the natural balance.

Keywords: Green construction, ecological construction, life cycle, construction, multi-criteria decision-making.

The article describes the process of sedimentation in water treatment, as well as the formation of tap sludge. A new method of water supply sludge treatment with coagulant regeneration at high turbidity of initial water is proposed. On the basis of the conducted research it is revealed that the greater the coagulant consumption obtained by the sulfatization method, the better the degree of coagulation. The basic technological scheme of water sludge processing by sulfatization method is developed. It is suggested that the obtained coagulant from water supply sludge can be used for repeated preliminary sedimentation. Taking into account the urgency of the problem of providing the population with clean drinking water, it is recommended to conduct pilot testing of the obtained coagulant from tap sludge by the sulfatization method.

Keywords: water treatment, tap sludge, daily regulation basin, sedimentation, turbidity, sulfatization method

The paper investigates the use of architectural combinatorics to solve the problems of multifunctional residential complexes in the conditions of digital transformation. The main methods of combinatorics, including conceptual and formal approaches, are considered. The main stages of evolution of the method, starting from constructivism, and the role of modern digital technologies such as BIM, parametric modeling, machine learning and artificial intelligence in the implementation of combinatorial approaches are described. Attention is given to sustainable architecture and optimization of spatial solutions. Successful and problematic project examples are analyzed. Limitations of the application of the technologies are analyzed, as well as ethical and social aspects of their use. The conclusions substantiate the significance of the method in the context of contemporary challenges.

Keywords: architectural combinatorics, combinatorial methods, multifunctional residential complex, sustainable development, sustainable architecture, adaptive architecture, digital technologies, BIM, parametric modeling, machine learning, artificial intelligence

This paper presents the results of a study aimed at developing a method for semantic segmentation of thermal images using a modified neural network algorithm that differs from the original neural network algorithm by a higher speed or processing graphic information. As part of the study, a modification of the DeepLabv3+ semantic segmentation neural network algorithm was carried out by reducing the number of parameters of the neural network model, which made it possible to increase the speed of processing graphic information by 48% – from 27 to 40 frames per second. A training method is also presented that allows to increase the accuracy of the modified neural network algorithm; the accuracy value obtained was 5% lower than the accuracy of the original neural network algorithm.

Keywords: neural network algorithms, semantic segmentation, machine learning, data augmentation

The article offers examples of simulated processes for creating a digital twin, a monitoring process, and a cargo transportation process. A theory is proposed for calculating a mathematical model based on Petri nets. Models for placing an order and its delivery are proposed, as well as a model of information flows using the example of developing models for the processes of transporting perishable products in a refrigerated container.

Keywords: Business process, modeling, BPMN, IDEF1, DFD, Petri nets, mathematical model, intelligent 3D model

The paper presents the results of calculating reliability indicators and analyzing the fault tolerance of the subsystem for monitoring and controlling steam pressure in the steam curtain of a tubular furnace of a diesel fuel hydrotreating technological unit. The effectiveness of reserving critical elements to improve functional safety is substantiated.

Keywords: reliability, fault tolerance, steam curtain, tubular furnace, hydrotreating, diesel fuel, redundancy, functional safety

The effect of nanosized boehmite microadditives on the surface properties of carboxymethyl cellulose polymer suspensions with aluminum microparticles was studied. It was found that with an increase in the boehmite content from 0.10 g to 0.20 g in suspensions, the surface tension of liquid systems increases by 8 mN/m. The contact angle of the liquid composition wetting the fluoroplastic surface also increases: from 62 ° to 85 °. It is shown that on a low-energy fluoroplastic surface, boehmite nanoparticles act as a pore-forming agent, leading to the generation of ordered cells on the surface of films formed from suspensions. The morphology of the initial powders and the formed films with cells was studied using optical and electron microscopy. It was established that ordered cells of similar size with dimensions of ratio 500 to 1,000 microns in size are formed with a boehmite content in the base composition of 0.15 g.

Keywords: carboxymethyl cellulose, aluminum powder, nanosized boehmite, suspension, surface tension, wetting angle, pore

The article examines the optimization of processes for receiving and transferring design and working documentation in contracting construction organizations using Building Information Modeling (BIM) technologies. The current state of document management in construction is analyzed, and problem areas of traditional approaches are identified. A concept for implementing BIM in document management processes is proposed, along with an algorithm for documentation transfer and regulations for interaction between construction process participants. The results of testing the developed solutions on a pilot project are presented, confirming their effectiveness. Promising directions for further research in this field are determined.

Keywords: building information modeling, design documentation, working documentation, construction production, common data environment

The article is devoted to the development of a tool for automated generation of time constraints in the context of circuit development in the basis of programmable logic integrated circuits (FPGAs). The paper analyzes current solutions in the field of interface tools for generating design constraints. The data structure for the means of generating design constraints and algorithms for reading and writing Synopsys Design Constraints format files have been developed. Based on the developed structures and algorithms, a software module was implemented, which was subsequently implemented into the circuit design flow in the FPGA basis - X-CAD.

Keywords: computer-aided design, field programmable gate array, automation, design constraints, development, design route, interface, algorithm, tool, static timing analysis