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  • Reviews, suggestions and discussions

  • Development of information modeling technologies in Russia

    The introduction of information modeling technologies (TIM) into construction practice is irreversible all over the world. The effectiveness of the use of TIM has been proven at all stages of the life cycle of capital construction facilities: at the pre-design phase, at the stages of design, construction, operation, repair, reconstruction, de-installation and disposal. A variety of software for digitalization of construction allows you to choose the optimal product for a specific type of task. Until recently, most of the Russian information modeling technology market belonged to software products of foreign IT companies. Due to the changed conditions, there is a forced transition to domestic TIM systems. The challenges that arise in this case require joint actions by government agencies, software developers in the field of TIM, construction companies and educational organizations.

    Keywords: information modeling technologies, BIM technologies, the life cycle of a capital construction facility, construction, import substitution, training of specialists, Russian TIM systems

  • Prospects for the modernization of user interfaces of automated dispatch control systems

    The problems of building human-machine interfaces of automated operational dispatch control systems with a high density of information flow are considered. The article is devoted to the modernization of the graphical part of control systems with the proposal of levels of graphical mnemonic circuits and their description of their advantages. In the second part, the modernization of the previously proposed algorithm for the development of an alarm subsystem is given. The advantages of the proposed approaches for the end user are derived.

    Keywords: dispatch control, automated control system, HMI, BMS, SCADA, UX/UI design

  • Comparative analysis and research of the specifics of the work of Russian and European tower cranes

    The article examines the specifics of the operation of Russian and European tower cranes. With the development of technology, tower cranes are becoming more and more advanced, equipped with modern automation systems. The lack of understanding of the differences in the operation of tower cranes from different manufacturers and the potential problems associated with this remain unresolved and require study. In this regard, conducting a detailed analysis of the features and differences in the operation of this special equipment will avoid problems in the construction industry, as well as reduce the risk of accidents. As part of the study, a comparison of the characteristics and performance of individual Russian and European tower cranes was conducted, on the basis of which the advantages and disadvantages of this type of equipment were identified. In the course of the work, recommendations were proposed to improve the operation of Russian tower cranes, which will contribute to the creation of more competitive equipment on the Russian market.

    Keywords: tower crane, tower crane design, operation, specifics of European and Russian tower cranes, automation 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

  • Systematization of the experience of green building and construction in the arctic territories

    Abstract in English: Green building and construction in the Arctic territories represent two important areas of modern construction, each of which faces unique challenges. The article systematizes world experience in both directions, provides an overview of best practices, technologies and methods. Examples of successful projects demonstrating the effectiveness of using modern technologies for sustainable development in the Arctic regions are given.

    Keywords: technology, energy saving, Arctic territories, low resource intensity, waste minimization, renewable energy sources

  • Technical science. Informatics, computer facilities and management

  • Simulation modeling of calculation of transient response using Duhamel integral

    A Simulink model is considered that allows calculating transient processes of objects described using a transient function for any type of input action. An algorithm for the operation of the S-function that performs calculations using the Duhamel integral is described. It is shown that due to the features of the S-function, it can store the values of the previous step of the Simulink model calculation. This allows the input signal to be decomposed into step components and the time of occurrence of each step and its value to be stored. For each step of the input signal increment, the S-function calculates the response by scaling the transient response. Then, at each step of the calculation, the sum of such reactions is found. The S-function provides a procedure for freeing memory when the end point of the transient response is reached at each step. Thus, the amount of memory required for the calculation does not increase above a certain limit, and, in general, does not depend on the length of the model time. For calculations, the S-function uses matrix operations and does not use cycles. Due to this, the speed of model calculation is quite high. The article presents the results of calculations. Recommendations are given for setting the parameters of the model. A conclusion is formulated on the possibility of using the model for calculating dynamic modes.

    Keywords: simulation modeling, Simulink, step response, step function, S-function, Duhamel integral.

  • The optimal multi-frequency modem for intermodule interaction of hybrid communications systems of a digital city

    The development, research and construction of devices that speed up the process of interaction between various modules (for example, telemetry and remote control systems), and in general, hybrid communication systems of a digital city that include a variety of systems used in an Intelligent Building is an urgent problem. One of these devices presented in the article is the optimal multi–frequency modem developed. In addition to the developed modem, the article presents examples of the development of similar types of devices and systems by both Russian and foreign researchers. At the same time, the authors proved that the use of the proposed modem provides a gain in spectral and energy efficiency in comparison with analogues. The proposed approach can be used to organize high-speed data transmission over frequency-limited communication channels based on new wired technologies of the digital subscriber line standard, as well as wireless systems.

    Keywords: telemetry and remote control system, intelligent building, digital city hybrid communications system, modem, multi-frequency modulation, digital subscriber line, optimal finite signal, modulator, demodulator, wireless communication system

  • Search for patent analogues based on a comparison of key phrases

    This study describes approaches to automating full-text keyword search in the field of patent information. Automating the search by keywords (n-grams) is a significantly more difficult task than searching by individual words, in addition, it requires morphological and syntactic analysis of the text. To achieve this goal, the following tasks were solved: (a) the full-text search systems were analyzed: Apache Solr, ElasticSearch and ClickHouse; (b) a comparison of the architectures and basic capabilities of each system was carried out; (c) search results in Apache Solr, ElasticSearch and ClickHouse were obtained on the same dataset. The following conclusions were drawn: (a) all the systems considered perform full-text keyword search; (b) Apache Solr is the system with the highest performance, it also has very convenient functions; (b) ElasticSearch has a fast and powerful architecture; (c) ClickHouse has a high data processing speed.

    Keywords: search, keyphrases, patent, Apache Solr, Elasticsearch, ClickHouse

  • A Systemic Approach to the Implementation and Development of Innovative Information Technologies for the Prevention of Offenses Committed by Foreign Citizens

    The article presents a comprehensive analysis of a systematic approach to the implementation and development of innovative information technologies aimed at preventing offenses committed by foreign citizens. The introduction provides an overview of the growing importance of employing advanced technological solutions in law enforcement, particularly in addressing challenges associated with foreign nationals. The main objectives of the study are to explore how the integration of technologies such as big data processing, artificial intelligence, and geographic information systems can enhance the efficiency of preventive measures. The article details the use of data analysis techniques, machine learning models, and system integration to create a unified information platform. This platform enables the consolidation of data from diverse sources, thereby improving the coordination between different law enforcement units and facilitating faster and more informed decision-making processes. The integration of these technologies also supports process standardization, reducing data inconsistencies and ensuring more reliable operations across various departments. The results highlight the benefits of utilizing big data analytics to process vast amounts of information that would be otherwise impossible to handle efficiently. Artificial intelligence, through predictive models and risk assessment tools, plays a crucial role in identifying potential threats and allocating resources effectively. Geographic information systems contribute by mapping crime hotspots and providing spatial analysis, which aids in targeted intervention strategies. The discussion emphasizes the importance of a unified approach to technology implementation, focusing on the creation of an integrated information system that can adapt to ongoing changes in the social and legal environment. The adaptability of the system is critical for maintaining its effectiveness in the face of new challenges and evolving regulatory requirements. The development of standardized data collection and processing protocols further enhances the system's resilience and operational efficiency. In conclusion, the article underscores that a systematic and integrated use of innovative information technologies significantly improves the effectiveness of crime prevention efforts and the overall efficiency of law enforcement agencies. The proposed approach not only facilitates proactive measures but also ensures a high level of responsiveness to emerging security threats, thereby strengthening public safety.

    Keywords: systemic approach, innovative information technologies, crime prevention, foreign citizens, big data, artificial intelligence, geoinformation systems, information platform, standardization, law enforcement agencies, efficiency management, data integration

  • Game-based training models in a simulation environment of organizational conflicts

    Abstract. It is revealed that specific forms of a simulation game combined with some peculiarities of training sessions in organizational systems could result in developing adaptable simulation models of a business situation. It is recommended to use a cognitive model in problem analysis of organizational systems, which allows switching from cognitive to simulation models naturally still being in visual topological descriptions. The AnyLogic software platform was chosen for developing a model which provides ample opportunities for creating an innovative educational environment with the elements of game simulations and AI. Cognitive analysis of a game learning process has revealed that the latter should have one cycle of a business game with two interactive nodes to introduce a host and a player into the game. It is noted that business games focused on developing management styles in a conflict are mostly in demand. Therefore, a simulation model has been developed to train executives to counteract an organizational conflict within the variability of authoritarian, democratic and liberal management styles. The model uses a paradigm of systems dynamics and is implemented in the AnyLogic software platform notation. To set the rules, the game host in the initial state or when starting the next game cycle sets the dynamics characteristics of a process while managing the organizational structure, as well as changes characteristics values of a pre-conflict situation. In response to conflict development the player performs management using auxiliary services available to him. In fact, the model is not limited by a list of the game’s tasks or possible options for a player’s decision.

    Keywords: management diversification, production diversification, financial and economic diversification goals, production and technical goals to ensure production flexibility

  • Recognition of noisy monochrome images using Hopfield neural network

    The relevance of the problem of pattern recognition lies not only in the quality of recognition - classification of images, but also in the possibility of their rapid restoration in noisy conditions. Such solutions are useful, for example, for automatic access control systems to a protected area in the case of recognition of license plates or an on-board computer when recognizing license plates in real time. It is shown that a recurrent neural network with the Hopfield architecture copes well with the recognition of simple monochrome images of small size in conditions of their noisiness. The architecture of the Hopfield neural network is given, the peculiarity of which is a small amount of memory, which determines the scope of application of the neural network of this architecture. The algorithm for training the Hopfield neural network is given. Examples and results of recognition of noisy monochrome images are demonstrated using the example of road signs. The results of the experiment on noisy images demonstrate the possibility of image restoration with less than 40% of distorted bits.

    Keywords: pattern recognition, recurrent neural network, noisy monochrome image, reference sample, training

  • Correspondence between old and new estimates of events binary classification and statistical detection criteria ouality

    The relationship between "old" and "new" concepts/metrics for quality assensing of statistical detection criteria and binary events classification is considered. Independence and consistency assessments of analyzed metrics relative to initial input data volume/composition are provided. Recommendations for the use of "new" metrics for assessing the quality of detection and binary classification events are clarified.

    Keywords: Type I and Type II errors, accuracy, recall, specificity, F-score, ROC curve; AUC integral metric

  • Technical science. Building and architecture

  • Fibroconcrete for the construction of oil and gas industry facilities

    During the construction and operation of oil and gas industry facilities, there are increased requirements for the quality of concrete. To this end, it is necessary to use new formulations and their preparation technology to obtain concretes of the required density with high strength, frost resistance, water resistance, crack resistance and, ultimately, increased durability. The use of a superplasticizing additive, basalt or polymer fiber and a nanocarbon additive in the specified amounts in the composition of fine-grained concrete contributed to an increase in the uniformity and density of the mixture and, accordingly, an increase in the strength characteristics of concrete at various hardening times. As a result of testing concrete samples for frost resistance, a mark of 400-500 cycles of freezing and thawing was obtained. This makes it possible to use these compositions of fine-grained concrete in harsh climatic and difficult engineering and geological conditions of construction and operation of oil and gas industry facilities.

    Keywords: fibroconcrete, oil storage tanks, nanocarbon tubes, basalt fiber, superplasticizer

  • The use of fish waste in washing liquids and concretes

    In the process of drilling oil or gas wells, increased friction forces of the drill string against the walls of the well, as well as in the rock-crushing tool. The use of various formulations of washing liquid using surfactants from fish production waste contributes to solving a significant part of the problems. The presence of fatty acids in fish waste, which have a significant surface-active effect, allows them to be used as plasticizing additives in concrete. As a result of the introduction of these wastes into the concrete mixture, its rheological properties are improved, as well as the strength characteristics of the hardened fine-grained fiber concrete significantly increase. The use of fish production waste in the concrete mixture will reduce the cost of concrete production, and the environmental situation will improve due to the disposal of industrial waste.

    Keywords: fiber concrete, strength, fish waste, industrial liquids, nanocarbon tubes, basalt fiber, superplasticizer

  • Features of construction and monitoring in areas of cultural and historical heritage on the example of the railway bypass of the Inkerman St. Kliment Monastery

    The paper describes the features of construction and monitoring in cultural and historical heritage areas using the example of the railway bypass of the Inkerman St. Kliment Monastery. The analysis of the current regulatory documents regulating activities in this area is carried out. The stages of geomonitoring are described. The geodetic component of monitoring is considered, taking into account the requirements established by the current legislation.

    Keywords: geomonitoring, construction, cultural heritage site, leveling, railway track, deformation grade, precipitation and deformations

  • Systematization of the objectives of the survey of buildings and structures

    The composition and scope of work on the inspection of buildings and structures depends on the purpose of the work. One of the problems of missing deadlines, increasing the cost and reducing the quality of the survey of buildings and structures is the incorrect formulation of the task. To this end, an analysis of the technical conclusions of the survey was carried out and the main goals were identified, as well as a link to the life cycle of the object was given, for a better formulation of the task.

    Keywords: inspection of buildings and structures, the technical condition of structures, the scope of work, the terms of reference for the survey, the life cycle of the object

  • The importance of taking into account the individual properties of wall materials in the construction of buildings

    A brief historical overview of the evolution of requirements for the performance properties of wall materials is given. It is shown that the list of types of wall materials used is regulated by the level of urbanization of society and modern requirements for energy and resource conservation. An analysis of the types of defects that occur in multilayer walls of buildings during their operation has shown that the most important cause of their occurrence is an incorrect combination of materials with different porosity. The importance of taking into account the "single-layer" factor in construction, which allows ensuring the quality of construction and operation of buildings in Russia's diverse and difficult climatic conditions, was noted. Information is provided on the product range and operational advantages of non-autoclaved fiberfoam concrete as a material suitable for the construction of single-layer walls and capable of improving their protective and acoustic properties.

    Keywords: safe use of premises, energy-efficient construction, gas-filled concrete, multilayer walls, mold, fiberfoam concrete, strength, thermal conductivity

  • Modeling of aerodynamic processes in the dust-sediment chamber

    In order to optimize the operation of dust-settling chambers of steelmaking furnace emission purification systems and increase the overall efficiency of the cleaning system, the movement of gas-air flows and dust particles of different diameters inside dust-collecting chambers was studied using the SolidWorks software product with the FlowSimulation application, which allowed us to investigate the influence of a number of factors, for example, fractional composition, the condition of the working surfaces of chambers, on the movement of gas-air the flow.

    Keywords: steelmaking furnace, gas-air flow, dust-settling chamber, cleaning efficiency, dust, dispersed composition, modeling

  • Problematic issues of protection and use of historical-cultural heritage

    The article deals with the problems of modern use of cultural heritage objects. The object of the study is the manor complexes on the territory of St. Petersburg and neighboring counties of St. Petersburg province. It is established that some part of the objects is not included in the register of cultural heritage objects and is subject to destruction. Contradictions in the issues of preservation and modern use of estate complexes are revealed. The main reasons for the destruction of objects are defined as the lack of information about the territory of the cultural heritage object in the Unified State Register of Real Estate (hereinafter referred to as USRN) and non-utilization of the potential of estates, due to the loss of the subject of attraction of the territory. The main provisions of protection of cultural heritage objects are briefly considered. The reasons for the incompleteness of information in the real estate register are established. The possibility and expediency of restoration of completely destroyed objects are considered. Possible options for the use of abandoned and lost estate complexes are proposed.

    Keywords: cultural heritage object, manor complex, register of cultural heritage objects, use,protection , condition of cultural heritage objects

  • Stress-strain state of foundations of power grid facilities located in the Far North

    The article presents a method for determining the stress-strain state of pile foundations for metal supports of power transmission lines during technical examination of power grid facilities in the Far North. An example of calculation using the LIRA automatic software package is given. The most stressed sections of structures are determined. The prospect of using CAD during technical examination of power grid facilities is proved.

    Keywords: building structures, metal structures, energy facilities, stress-strain state, technical expertise

  • Organizational and technological solutions in the investment and construction process

    This article analyzes the organizational and technological solutions used in the investment and construction sector, aimed at significantly increasing the efficiency of construction production and optimizing labor productivity. The process of implementing investment and construction activities is a multifaceted set of strategic maneuvers aimed at attracting capital investments, improving organizational and technological management and successfully completing project initiatives. The integration of innovative approaches in resource management and labor organization processes serves as the basis for the formation of a sustainable competitive advantage and maximizing performance in the dynamically developing construction industry. Organizational and technological schemes for the implementation of investment and construction projects are considered. Attention is paid to the issue of complex turnkey contracts, which involve the preparation of preliminary contract documentation in two stages. The contractor studies the requirements put forward by the customer, after which he sends him his proposals, after approval and acceptance of which the risk of constructive and organizational and technological solutions is reduced.

    Keywords: organizational and technological solutions, investment and construction processes, facility, organizational management structures, reliability, efficiency

  • Multidisciplinary research