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  • Forecasting the service life of a gas pipeline after repair and restoration work using polymer materials

    The problem of ensuring the reliability and durability of the restored pipelines is an urgent task, especially in connection with the use of new materials in repair practice. In recent years, polymer materials have been widely used in pipeline repair and restoration work. Research in this area is mainly focused on technological processes, the development of equipment and structural elements made of composite materials. In our study, we set ourselves the task of using mathematical modeling to evaluate the operation of the steel+polymer shell structure after repair work on the gas pipeline, namely, the dynamics of changes in reactive pressure and maximum stresses in pitting corrosion zones depending on ground conditions. The results were obtained that allow us to predict the service life of this structure in soils with different corrosion activity. A significant increase in the bearing capacity of a worn pipeline repaired with polymer inserts in soils with high activity of corrosion processes has been proven.

    Keywords: gas pipeline, metal corrosion, repair and restoration work, polymer materials, corrosive soil, durability, forecasting the service life

  • Application of modern language models for automatic transcription and analysis of audio recordings of telephone conversations between sales department employees and clients

    The article is devoted to the study of the possibilities of automatic transcription and analysis of audio recordings of telephone conversations of sales department employees with clients. The relevance of the study is associated with the growth of the volume of voice data and the need for their rapid processing in organizations whose activities are closely related to the sale of their products or services to clients. Automatic processing of audio recordings will allow checking the quality of work of call center employees, identifying violations in the scripts of conversations with clients. The proposed software solution is based on the use of the Whisper model for speech recognition, the pyannote.audio library for speaker diarization, and the RapidFuzz library for organizing fuzzy search when analyzing strings. In the course of an experimental study conducted on the basis of the developed software solution, it was confirmed that the use of modern language models and algorithms allows achieving a high degree of automation of audio recordings processing and can be used as a preliminary control tool without the participation of a specialist. The results confirm the practical applicability of the approach used by the authors for solving quality control problems in sales departments or call centers.

    Keywords: call center, audio file, speech recognition, transcription, speaker diarization, replica classification, audio recording processing, Whisper, pyannote.audio, RapidFuzz

  • Semantic integration and data adaptation in heterogeneous corporate information systems

    The article addresses the issues of integration and processing heterogeneous data within a single company as well as during interaction between various participants of business processes under conditions of digital transformation. Special attention is given to collaboration between equipment manufacturers and industrial enterprises, emphasizing the importance of aligning and transforming data when interacting with heterogeneous information systems. The problem of integrating historical data, challenges arising from transitioning to new infrastructure, and a solution based on principles similar to those used by open standards such as OpenCL are discussed. Particular emphasis is placed on providing complete and consistent datasets, developing effective mechanisms for semantic integration, and using ontological approaches to address difficulties in comparing and interpreting diverse data formats. It highlights the necessity of continuously updating metadata dictionaries and establishing connections between different data sources to ensure high-quality and reliable integration. The proposed methods aim at creating sustainable mechanisms for exchanging information among multiple business entities for making informed management decisions.

    Keywords: digital transformation, heterogeneous systems, erp/mes systems, ontology, semantic integration, metadata, data mapping

  • Calculation of the coefficient of heterogeneity of a mixture when mixing bulk media, the particles of which have different sizes and shapes

    The article discusses the structure and principle of operation of an improved centrifugal unit for mixing bulk materials. A special feature of which is the ability to control mixing modes. Due to its design, the selection of a rational position of the bump makes it possible to provide such conditions for the impact interaction of particle flows, in which a high-quality homogeneous mixture of components is formed, the particles of which have different sizes, shapes and other parameters. To characterize the resulting mixture, the coefficient of heterogeneity was used, the conclusion of which is based on a probabilistic approach. A computational scheme of the rarefied flow formation process is given. An expression is derived for calculating the coefficient of heterogeneity when mixing bulk media, the particles of which have different sizes, shapes and other parameters. The research conducted in the article allows not only to predict the quality of the resulting mixture, but also to identify the factors that have the greatest impact on achieving the required uniformity.

    Keywords: aggregate, bulk media, mixing, coefficient of heterogeneity, concentration, design scheme, particle size

  • Efficiency of using long-span structures in industrial and civil construction

    The article discusses some methods for the construction of long-span coverings from precast reinforced concrete elements and prefabricated steel structures. To systematize these design and technological solutions and determine the effectiveness of their application based on the parameters of manufacturability, a comparative analysis was carried out. The construction technologies were compared according to the following parameters: specific and total labor intensity, the level of mechanization, the total number of elements, the average and maximum mass of one element, the total mass of the mounted elements, and the equilibrium coefficient.  The analysis showed that for reinforced concrete structures, installation in blocks is most effective, involving preliminary enlargement at ground level, followed by lifting and installation in the design position. Precast reinforced concrete shells have a higher level of mechanization and a degree of equilibrium, which makes it possible to use crane equipment efficiently, but due to their considerable weight, they require the use of supporting structures and high-load cranes. The installation of prefabricated steel structures in its entirety with preliminary enlargement at ground level is the least laborious, but the need to install a large number of low-mass piece elements reduces manufacturability.

    Keywords: installation of long-span structures, installation of triple-layer rotational shells of double curvature, installation of steel beam structures, installation of a spatial structural roof unit, installation of the entire roof structure as a single unit

  • Development of a software module for automatic code generation based on UML diagrams

    The article discusses a software module developed by the authors for automatic generation of program code based on UML diagrams. The relevance of developing this module is due to the limitations of existing foreign code generation tools related to functionality, ease of use, support for modern technologies, as well as their unavailability in Russian Federation. The module analyzes JSON files obtained by exporting UML diagrams from the draw.io online service and converts them into code in a selected programming language (Python, C++, Java) or DDL scripts for DBMS (PostgreSQL, Oracle, MySQL). The Python language and the Jinja2 template engine were used as the main development tools. The operation of the software module is demonstrated using the example of a small project "Library Management System". During the study, a series of tests were conducted on automatic code generation based on the architectures of software information systems developed by students of the Software Engineering bachelor's degree program in the discipline "Design and Architecture of Software Systems". The test results showed that the code generated using the developed module fully complies with the original UML diagrams, including the structure of classes, relationships between them, as well as the configuration of the database and infrastructure (Docker Compose). The practical significance of the investigation is that the proposed concept of generating program code based on visual models of UML diagrams built in the popular online editor draw.io significantly simplifies the development of software information systems, and can be used for educational purposes.

    Keywords: code generation, automation, python, jinja2, uml diagram, json, template engine, parsing, class diagram, database, deployment diagram

  • Verification of the ring algorithm for distributed systems using the specification language of the temporal logic of actions

    The article is devoted to the problem of verification of distributed algorithms using formal methods. The classical leader selection algorithm in ring topology, the ring algorithm, is chosen as the object of research. For its analysis, the specification language of the Temporal Logic of Actions (TLA+) is used. The paper presents a detailed formal model of the algorithm, describing its states and transitions, taking into account the features of distributed systems, such as the lack of shared memory. The key properties of correctness are formulated and proved: the uniqueness of the leader (the property of security), the finality of elections (the property of liveliness) and consent. The correctness of the specification was confirmed using the model model verifier of the language of temporal logic of actions, which exhaustively checked all achievable states for the model with three processes. The results demonstrate the effectiveness of the Time Logic Specification language (TLA+) for providing a high degree of confidence in the reliability of distributed systems.

    Keywords: formal verification, distributed systems, ring algorithm, leader selection, specification language for temporal logic of actions, model verification, security properties, vivacity properties.formal verification, distributed systems, ring algorithm

  • Investigation of the effect of mineral additives on the properties of self-compacting fine-grained concrete

    The compositions of self-compacting fine-grained concrete using mineral additives such as silica, limestone flour and trepel, as well as polycarboxylate superplasticizer, have been studied. The main attention is paid to the effect of the composition of the mixture on the compressive and flexural strength, density, water resistance and frost resistance of concrete. The test results showed that samples with silica demonstrate increased strength, while the introduction of trepel and limestone flour reduces this indicator. The highest density and frost resistance (F600) were achieved in formulations with silica, without additional additives. The work highlights the importance of optimizing the grain composition of aggregates and the choice of plasticizers to improve concrete performance.

    Keywords: self-compacting concrete, fine-grained concrete, silica, polycarboxylate superplasticizer, limestone flour, trepel, strength, density, frost resistance, water resistance

  • The influence of urban development on the ventilation of residential areas

    The article considers the issues of studying the wind regime of the territory of residential areas. The results of modeling a city microdistrict and wind flows in it using the multifunctional software package Ansys Discovery Live are presented. The analysis of the wind regime of the territory with different volumes of development from the point of view of the comfort of a person in it is carried out, comfortable and uncomfortable aeration zones are determined. The comparison was made for a residential complex consisting of four groups of houses with their courtyards, with a southern direction of the incoming wind flow. An assessment of the influence of the surrounding development on the wind situation is given. The use of computer modeling of the wind regime of residential development is relevant at present, since information on the nature of the movement of air flows helps to improve the comfort of cities for the population.

    Keywords: wind regime, urban development, residential development, urban development, numerical modeling, Ansys Discovery Live, ventilation, wind comfort, aeration regime, aeration

  • Improving the mechanism for managing life safety risks based on an assessment of changes in vehicle vulnerability

    The problem of managing the risks of life safety in the transport sector in modern conditions is considered. The analysis of theoretical approaches to the risk management of life safety is carried out. It is proposed to consider a set of risks consisting of typical and atypical risks. Based on the consideration of typical risk management methods, problematic areas of the risk management mechanism in the transport sector have been identified. The directions of minimizing atypical risks through the digitalization of the transport industry and the application of the "system of many units" method are formulated. Based on the analysis of environmental factors and vulnerability of a technical facility, a model for assessing typical and atypical vulnerability of a vehicle is proposed, which makes it possible to establish a relationship between vehicle vulnerability and the processes of generating safety risks. To improve the mechanism for managing atypical risks of life safety, it is proposed to use the tools of digitalization of the transport sector. It is emphasized that in order to ensure a high-tech safe transport system, it is necessary to combine the efforts of all participants in the transport process, including the Institute of Science and Education. It requires the training of modern personnel with knowledge, skills and abilities in various fields of theory and practice, as well as modern environmentally-oriented and risk-oriented thinking, taking into account the co-evolution of the human mind and artificial intelligence.

    Keywords: vehicle, life safety, vulnerability, risk, risk management mechanism, vehicle vulnerability assessment model, personnel training, risk-oriented thinking, environmental-oriented thinking

  • Deploying and Integrating Grafana, Loki, and Alloy in a Kubernetes Environment

    This article presents a structured approach to deploying and integrating Grafana, Loki, and Alloy in Kubernetes environments. The work was performed using a cluster managed via Kubespray. The architecture is focused on ensuring external availability, high fault tolerance, and universality of use.

    Keywords: monitoring, ocestration, containerization, Grafana, Loki, Kubernetes, Alloy

  • Public Spaces on a Modern University Campus: Typology, Trends, Principles

    The article considers the issue of forming a system of public spaces on university campuses as a key factor in educational, social and innovative activities. The functions, typology and principles of organizing campus public spaces are analyzed in the context of modern educational paradigms and urban trends. The scientific novelty lies in the systematization of the principles of organizing public spaces of various types as a single system that responds to the challenges of digitalization and the actualization of social interaction. A conclusion is made about the need to move from designing individual spaces to creating a holistic, flexible and multifunctional system that serves as the framework for university life.

    Keywords: university campus, public space, educational environment, social interaction, innovation ecosystem, campus urbanism

  • Features of calculating air exchange in public buildings and structures

    The arrangement of protective structures of civil defense is currently vitally important, especially for populated areas located near the combat zone. A pressing issue in the design of shelters is the correct determination of the volumes of air exchanges required to ensure the stay of those sheltered during the standard periods. An analysis of changes in climate and microclimate parameters over the past years and methods for calculating air exchange in protective structures was conducted. A classic model of the process of changing the temperature and humidity of the air with a variable coefficient of inclination of the beam of such a process was built. The redundancy of air exchanges calculated according to the data and methods of the latest regulatory document is shown, leading to an increase in capital costs for the arrangement of a shelter.

    Keywords: air exchange, civil defense shelters, climate parameters, indoor microclimate, graph-mathematical model of air exchange

  • Digitalization of Exhibition and Its Impact on the Architectural Typology of Museum Buildings

    The article is dedicated to analyzing the changes in museum design in the context of the rapid integration of digital technologies. It examines the ways of integrating multimedia systems, virtual and augmented reality into the architectural structure of museum spaces. Based on the analysis of domestic and foreign examples, new approaches to exhibition formation are identified, built on principles of flexibility, interactivity, and immersiveness. The emphasis is placed on the changes in typological models of museums: from traditionally hierarchical to adaptive, transformable formats. Special attention is given to the evolving role of the architect, acting as a mediator between digital scenarios and spatial expression. As a result, the museum of the future is envisioned as a complex spatial-technological ecosystem, in which architecture becomes an active participant in communication with visitors through digital content and technological interfaces.  

    Keywords: typology, digitalization, museum, immersiveness, architecture, multimedia, museum of the future, design, digital exhibition, exhibition space

  • The influence of the functional purpose of buildings on the formation of historical architecture in Europe

    Currently, one of the main factors influencing the formation of architecture is the functional purpose of the building, since it determines the essence of the architectural object. The purpose of the scientific work is to study the influence of building functions on the historical architecture of Europe and their impact on the development of modern architecture. This article sets the objectives of studying the classification of functional purposes of buildings, conducting a retrospective analysis of the development and formation of architectural styles in Europe, based on world design experience and the conducted research to identify the influence of the building function on its planning and volumetric-spatial solutions in the process of architecture development. The research method is the analysis of the historical architecture of Europe from the time of the inception of architecture to the present day, carried out on the basis of world design experience in different eras. In the course of the study, four main trends in the development of the functions of modern architecture were identified: integration with nature, creation of adaptive spaces, multifunctionality and development of new functions. It is concluded that the building function played the most important role throughout the entire period of architecture formation, which led to the emergence of a huge variety of building types today and made a significant contribution to the development of architecture of the XXI century.

    Keywords: architecture, historical architecture, architectural style, functional purpose, European architecture, building type, retrospective analysis, function, influence, development