Optimization of the composition of heavy cement concretes modified with a complex additive based on industrial waste (alumina-containing component - aluminum slag (ASH), spent molding mixture (OFS) using the PlanExp B-D13 software package is a three-factor planned experiment, according to the criteria: compressive strength on the 2nd and 28th days of hardening.

Keywords: heavy cement concretes, fast-hardening concretes, optimization, experiment planning, strength indicators, industrial waste, spent molding mixture, aluminum slag

This paper explores the role of historical forms in contemporary architectural design. It examines ‎how classical architectural elements, such as columns, arches, and pediments, are integrated into ‎modern architectural projects while preserving cultural heritage and adapting to new technological ‎and functional demands. The interaction between tradition and innovation is discussed, alongside ‎examples of successful applications of historical forms in contemporary buildings. The paper ‎highlights how architects use historical motifs to create harmonious and expressive objects that ‎meet modern standards while maintaining a connection to the past. The study emphasizes the ‎importance of blending historical references with modern architecture to create a unique ‎architectural language that resonates with both the present and the cultural history of the place. It ‎also discusses the challenges and opportunities that arise when incorporating historical forms into ‎the design process, offering a comprehensive look at the ongoing dialogue between tradition and ‎modernity in architecture.‎

Keywords: historical forms, contemporary design, architecture, tradition and innovation, classical ‎architecture, integration of traditions, cultural heritage, architectural elements, columns, arches

A characteristic feature of urban construction is an increase in the density of buildings and, accordingly, the tightness of working conditions. The need to ensure the safety of existing buildings and reduce negative impacts on the urban environment requires the development of rational solutions at the stage of organizational and technological design during construction in conditions of dense development. The factors of constraint affect already at the stage of preparation of the construction site. The purpose of the study is to select and justify the methods of work during the removal of engineering networks from the construction site. The existing methods of network re-routing and technology comparison are considered. An example of a construction object shows a variant of an organizational and technological solution for the removal of networks using trenchless technologies.

Keywords: engineering training, construction site, dense buildings, cramped conditions, trenchless laying of networks

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

In this article the authors continue to explore the difficulties of organizing and carrying out capital repairs in medical institutions in the conditions of their functioning. The article focuses on the problem of lack of informativity of the regulatory documents about organization and realization of capital repair of medical institutions in the conditions of their functioning, which was mentioned in the authors' previous article. The authors analyze the regulatory documents, explore the experience of capital repair of existing medical and preventive institutions and highlight the main reasons, why the regulatory documents aren't so informative. The first reason - there are no recomendations about, how medical institution should keep its functioning according the time of capital repair. The second reason - there are no recommendations how renovation should be orginized out while maintaining all hygienic requirements of hospitals functioning (noise level, cleanliness, etc.). The third reason - regulatory documents contradict each other in some issues. All these reasons lead to the following consequences: delayed deadlines, lower quality of work, higher repair costs, lower working conditions for staff and lower quality of health services. The authors propose a comprehensive approach to a solution not previously reported in their research: updating the regulatory documents by adding special sections on capital repairs, creating special guidelines that will be only about capital repair of medical institutions and improving the qualifications of specialists.

Keywords: capital repair, medical and preventive institution, health care, regulatory documentation, safety, construction organization, technology of capital repair organization, normative document, informativeness, recommendations, updating

The article discusses the use of recycled materials obtained during the dismantling of facilities during renovation in St. Petersburg. The districts of St. Petersburg with "problematic" houses, such as panel "Khrushchev" and "ships" of the first type, are highlighted. Data on the types of waste, volumes of concrete scrap, features and applications of secondary rubble are presented. Examples of organizations in St. Petersburg dealing with waste recycling are given. The purpose of the work is to study the possibilities of recycling construction waste for reuse in construction and landscaping of the region.

Keywords: secondary materials, dismantling, renovation, concrete scrap, construction waste, recycling, crushed stone, sustainable development, St. Petersburg, ecology

The article is designed to identify the basic principles of the formation of the museum complex ""New Chersonesos"" and its thematic, visual and sacred relationship with ancient Chersonesos. The article considers a brief history of the formation and development of Tauric Chersonesos, its significance as one of the key places of the Russian cultural tradition and national identity. The article evaluates the architectural and compositional features of the New Chersonesos museum complex. The interrelation of its constituent objects and their functional and planning features is given. The basis of the model for the development of the territory of New Chersonesos was a system of contact joints and axes that determine the compositional structure of individual ensembles, the placement of spatial accents that give the direction of movement within the complex itself and in adjacent territories. The article is carried out within the framework of a dissertation research devoted to the Hellenistic cities of the Northern

Keywords: Tauric Chersonesos, New Chersonesos, museum complex, archeology, Byzantine style, axial compositions, functional and planning features

The article publishes the results of the research work devoted to the analysis of architectural and spatial elements of the ancient city. Various types of public buildings in the structure of the Greek polis are considered. A brief description of their spatial and architectural features is given. The consistent evolution of these structures from simple forms of the Archaic era to more complex planning solutions in the Hellenistic era is traced - the time when the theoretical and practical skills of architects found their highest expression.

Keywords: architecture of Ancient Greece, architectural and spatial elements of the Greek polis, public buildings in the structure of the polis

Volcanic materials are widely used in the production of mixed cement. Volcanic tuff, as a mineral additive to Portland cement, is effective in improving the rheological characteristics of the hydraulic binder, has medium pozzolanic activity, improves the properties of the material and can be used in the composition of light plaster mixtures.. The purpose of the studies presented in the article was to form models of such mixtures that allow their properties to be assessed. The experiment was conducted on the basis of methods of mathematical planning, statistical processing of the results and analytical optimization of the obtained regression equations. The experimental studies are based on the matrix of a complete three-factor experiment. The composition of the light plaster mixture included the following components: hydraulic binder, crushed volcanic tuff (as a fine light filler), reinforcing fiber and synthetic additive. Compositions of plaster mixtures based on volcanic tuff have been developed. The optimal values of the main components of the plaster mixture based on volcanic tuff, which is present in the composition of the mixture as a light fine filler and as a component of a hydraulic binder, have been established. An engineering interpretation of the simulation results is given.

Keywords: plaster material, volcanic tuff, pozzolan activity, mathematical modeling, analytical optimization

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

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

The article presents a system research of the factors of formation of architectural and typological models of a medium-rise dwelling. The research was conducted in two stages. At the first stage, the main internal and external factors of building architectural and typological models based on the study and processing of literary sources, analysis of modern domestic and foreign experience in designing medium-rise housing are collected and systematized. The structural elements of the factors are systematized according to well-established architectural concepts. At the second stage of the study, a matrix of dependencies between external and internal factors was formed, and the number of dependencies between internal and external factors was calculated. Based on the data obtained, the internal factors were grouped by the number of links with external factors. The obtained results of the system research provide the basis for further construction of a limited number of the most versatile and flexible architectural and typological models that take into account the greatest number of environmental conditions.

Keywords: architectural and typological models, urban planning conditions, cultural conditions, national and ethnographic conditions, natural and climatic conditions, socio-demographic conditions, medium-rise housing

This article examines the factors that influence the architectural formation of medical university buildings. The advantages and disadvantages of building construction and reconstruction are briefly analyzed. The main attention is paid to urban planning, natural and climatic, functional planning and economic factors, their influence on the architectural formation of buildings. Examples of the construction of medical university buildings in the 21st century are given.

Keywords: architecture, medical university, factors, architectural formation, university architecture

This article identifies the main advantages and disadvantages of using VR simulators to improve the professionalism of employees when performing work at an enterprise (organization). An analysis of existing projects used in various industries was carried out. A description of the developed first aid project is presented. The developed simulator allows you to practice skills in eliminating bleeding in different parts of the body: arm, leg, neck. While working on the project, the main factors influencing the quality of the developed VR simulator were identified. Thus, it was found that VR simulators are not capable of fully simulating fine motor skills of the hands. In addition, the simulator has restrictions on the position of the body in space. Despite the identified shortcomings, the use of the simulator allows you to practice key skills in providing first aid.

Keywords: virtual reality, VR simulator, personnel training, professional activity, first aid, information technology, modeling.

Model multiparameter distributions used in science and technology are analyzed and systematized. Particular attention is paid to the Rozin-Rammler-Weibull-Gnedenko and Kolmogorov-Gauss distributions, which adequately describe single and multiple crushing. The suitability of these distributions for modeling the granulometric composition of industrial waste from mechanical processing is confirmed by physical and computer experiments.

Keywords: distribution function, mathematical model, generalized hyperbolic distributions, crushing, bulk medium, mechanical processing

Samples of metal dust generated during milling of gray cast iron were collected experimentally. The machine operating mode, dust collection points, and blowing conditions were varied in the experiments. To ensure the reliability of the result, the physical stage of the analysis of the dimensional characteristics of the dust was performed using two methods: sieving and direct optical measurements. Significant discrepancies in the statistical parameters obtained by different methods were revealed. A hypothesis explaining the differences was proposed and confirmed. An integrated approach to the physical stage of dispersion analysis of bulk media is recommended.

Keywords: wood dust, parametric identification, sieve analysis, laser diffraction, micrographs, mathematical modeling, digital twin

Flight safety is one of the most important priorities of civil aviation. In recent years, there has been a downward trend in the number of aviation accidents, which is associated with the introduction of new technologies and training methods. One of these methods is computer simulator training (CTP).KTP is a training method in which LE specialists practice skills and procedures in a virtual environment that simulates real flight conditions. KTP allows you to increase the effectiveness of training, reduce the risk of errors and ensure that training meets modern safety requirements aviation simulators, development of simulator systems, simulators of aviation instrumentation.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

Federal Law No. 44-FZ "On the Contract System in the Field of Procurement of Goods, Works, and Services for State and Municipal Needs" regulates the process of concluding and executing government contracts in Russia. In the context of increasing complexity and volume of purchases, the counterparty analysis module is becoming an important tool, which allows you to assess the reliability and risks associated with the execution of contracts. The analysis of contractors was carried out taking into account the executed or unfinished contracts. The models of logistic regression, decision forests, clustering and neural networks are used. The models showed a good prediction probability, excluding neural networks for which the training sample was too small.

Keywords: mathematical modeling, cybersecurity, intelligent models, financial sector, government contracts, information infrastructure

Multilayer edge commutation in 3D integration technologies can simplify the design of microassemblies and reduce the length of edge electrical connections. However, this commutation is vulnerable to thermomechanical stresses and requires preliminary analysis of the product design. This paper shows the results of modeling various variants of multilayer edge commutation for 3D microassemblies, differing both in the dielectric material used at the edge redistribution layer and in the material for sealing the microassembly volume. It has been established that the lowest values ​​of thermomechanical stresses in commutation are characteristic of materials whose temperature coefficient of linear expansion is as close as possible to this parameter of conductors. At the same time, the use of composite dielectrics in redistribution layers leads to a more significant decrease in stresses than the use of more thermally stable unfilled polymers.

Keywords: 3D integration, packaging, thermomechanical stresses, polyimide, redistribution layer

In the article, the authors propose a methodology for managing connections in a community based on the developed heuristic algorithm for optimal seating of participants in a multi-round networking event to maximize the likelihood of new partnerships within offline events. The seating algorithm is based on solving the NP-complete problem of the maximum clique. Optimization of the resulting solution is implemented based on the permutation crossover algorithm.

Keywords: In the article, the authors propose a methodology for managing connections in a community based on the developed heuristic algorithm for optimal seating of participants in a multi-round networking event to maximize the likelihood of new partnerships withi

A comprehensive methodology for calculating assessment of wells reliability and condition in terms of submersible equipment operation, operating time and additional negative factors of operation through Boolean and fuzzy logic has been developed. The methodology includes retrospective analysis, calculation for the current moment and calculation of future possible failures with the preparation of various option of wells repair schedule and their distribution into risk zones.

Keywords: boolean logic, fuzzy logic, time to failure, bath function, weighting factor, membership function, screening method

The article examines the problem of power supply of low-power devices remote from stationary power sources. The structural solutions of autonomous power supply systems of high and low power, which use renewable energy sources, are considered. It is shown that in autonomous micro and low-power power supply systems, MPPT-type controllers do not provide technical and economic advantages compared to controllers in which, due to simple structural and circuit design solutions, the necessary but sufficient minimum of functions for charging and discharging the energy storage of the power supply system is implemented. The models of circuit solutions of the controller nodes are presented, which implement the necessary minimum of functions for charging and discharging the energy storage device and the results of experimental studies showing the operability of the proposed circuit solutions.

Keywords: power supply system, controller, renewable energy source, pulse voltage converter, battery, voltage limiter

The influence of the diffraction divergence of an acoustic beam on the characteristics of a single-channel acousto-optic correlator (AOC) is considered. A mathematical model is being developed to optimize the divergence of the acoustic beam of a single-channel acousto-optic correlator. It is shown that it boils down to amplitude and phase modulation of the pulse response of the device, and the nature of the parasitic modulation turns out to be invariant to the type of the correlator reference signal. As a result of numerical calculations, dependences were obtained that allow us to quantify the effect of diffraction divergence on the operation of the ACS. Methods of compensation for parasitic modulation are proposed, which makes it possible to improve the functionality of acousto-optic correlators.

Keywords: diffraction divergence of an acoustic beam, mathematical model of an acousto-optic correlator, ultrasonic light modulator, electroacoustic transducer, reference transparency