This study is devoted to analyzing the capabilities of the Python programming language when creating information systems for detecting dangerous objects in luggage. As a result, a recognition system architecture was developed, including the following main components: an image processing module, a machine learning module, a database and a user interface. The software chosen is Python with the libraries PySide6, SQLite, Numpy, YOLO. The information system was implemented and tested on real data, which confirmed the correctness of the selected capabilities and technologies of the Python language for the development of security information systems.

Keywords: information system, security, neural network, machine learning, pattern recognition, performance

The article considers key aspects related to the process of managerial decision-making and the formation of managerial influence in conditions of uncertainty associated with risk, in such a complex and numerous social organizational system as internal affairs bodies, when the subject of management does not have reliable or does not fully possess sufficient information about the current state of the operational situation. In the organization of information and analytical activities of internal affairs bodies are highlighted in order to determine priority areas of law enforcement activity in accordance with their main functions, forecasting possible adverse trends and processes in society, substantiating ways and means of resolving identified problematic situations in law enforcement and developing appropriate preventive measures in various information situations according to probabilistic realizations of various outcomes. The application of the main types of selection criteria and formalized models for determining the relationship between planned organizational measures and the results of their implementation in the presence of uncertain factors affecting effective decision-making in situations of rapid changes in the elements of the operational situation and the irrational use of resources available in the internal affairs bodies is considered and illustrated. Using concrete examples, the mechanism of finding the optimal management solution in the field of law enforcement and public safety is demonstrated, the existing problems of choosing a solution in conditions of risk and uncertainty are identified and ways to resolve them are proposed, an analysis is made regarding the results of the study.

Keywords: "managerial decisions, managerial activity, decision-making in conditions of risk and uncertainty, situational management, internal affairs bodies, law enforcement, information, information and telecommunication technologies, decision-making criteria

Results of the Serial Peripheral Interface (SPI) Slave node design based on gate arrays 5503 series are presented in this paper. SPI is used for high-speed synchronous data transmission between control and peripheral devices. Developed chip could be applied in connection with SPI Master node for matching microcontrollers and microprocessors with different sensors, analog-to-digital and digital-to-analog converters, memory and communication units. Upon the results of the development, design approach of digital integrated circuits is proposed. The approach supposes using Russian freeware CAD "Kovcheg" ("Ark") designated for gate arrays design (IC based on prefabricated crystals, components on which are supposed to be interconnected during design to form logic devices). According to the proposed approach, behavioural descriptions of the devices, written on hardware description languages (e.g. Verilog), are used, since it is often easier to describe circuit operational principal algorithmically than construct structure from components library. The problem is that "Kovcheg" can't execute structural synthesis of the circuit from behavioural description. So it is proposed in the approach to use outside CAD environments, intended even for design of custom full-integrated circuits (like Cadence) or FPGA (like Vivado), to synthesize structural description of desired device from known behavioural ones and available process design kits (PDK) or library, appropriate for the chosen CAD. The entire design cycle using "Kovcheg" is outlined in the paper.

Keywords: gate arrays, serial peripheral interface, hardware description language, computer-aided design

With the development of technology, access systems with higher accuracy and levels of reliability have emerged. Access systems are a fascinating and important area of expertise, requiring knowledge from a wide range of disciplines such as information security, electronics, programming and systems administration. Therefore, its further development requires highly qualified specialists. In this regard, to involve the younger generation, educational programs and courses aimed at training and intellectual development of adolescents are appearing. To practically reinforce the acquired knowledge, various educational kits and open-source laboratory stands are used, on which students can try their hand and implement ideas. This project has prospects for further development for work not only in terrestrial laboratories, but also at orbital stations - this aspect is especially interesting for young explorers of the Universe. The goal of the work is to create a safe and convenient access system for users, providing a high level of security and ease of use.

Keywords: research, experiment, payload, space, remote control, self-determination, career guidance

This article presents the results of a study of the filtration flow in a porous material based on a thrice periodic minimum surface (TPMP) Neovius. The Brinkman model was used to determine the profile of the fluid flow velocity in the channel containing the TPMP insert. Based on computational experiments in ANSYS Fluent, the dependence of the permeability of the medium on its porosity is determined. The results of the study can be used to describe filtration processes in the oil and gas industry, hydrogeology and other fields related to filtration flows in rocks and other media.

Keywords: permeability, filtration, porous medium, minimum surface, TPMP, ANSYS, Brinkman model, numerical modeling, boundary value problem, velocity profile

The process of creating an aggregated digital twin for a physical prototype of a manipulator with a load-gripping mechanism is considered. To solve the problem of controlling the system nodes, the freely distributed software platform Robot Operating System (ROS) was used, in particular, the MoveIt packages for manipulator control, OpenCV for computer vision and RViz for visualization. A description of the physical prototype and the stages of creating a model of the robotic complex in the form of URDF files is given. The developed system creates a level of abstraction between hardware and software, which allows exploring new technological solutions in the field of automation of processes of transport and cargo systems.

Keywords: machine vision, robotics, digital twin, control system, manipulator, ROS

The focus is on the building construction technologies using 3D modular building blocks, which are capable of changing their geometric dimensions and shape or remaining unchanged during installation. The paper discusses the main advantages of using 3D modular building blocks for building construction and offers specific examples showing the related process flows. It also shows horizontal and vertical nodal joints and provides a comparison of two options based on certain criteria of installation adaptability.

Keywords: buildings, construction technology, installation and transport manufacturability, horizontal and vertical connections, technological processes

The article outlines modern trends in the formation of the architecture of concert halls based on the use of long-span structures in the structure of the facility. The parameters of concert halls, which are affected by the use of long-span structures, are considered. Examples of the implementation of the architecture of concert halls using long-span structures made of various materials are presented. Theoretical assumptions have been made about the division of long-span structures into two types according to the nature of their influence on acoustics.

Keywords: concert halls, long-span structures, acoustics, architecture, acoustic characteristics, halls, architectural and building structures

The article presents a comparative analysis of various types of long-span structures used in covering concert halls. Their influence on the acoustic characteristics of the concert hall box is considered. Examples of the implementation of the architecture of concert halls using long-span structures made of various materials are presented. Conclusions are drawn about the division of large-span structures into two functional groups according to the nature of their influence on acoustics with the corresponding option for space-planning solutions for concert halls.

Keywords: concert halls, long-span structures, acoustics, architecture, acoustic characteristics, halls, architectural and building structures

The article discusses the key problems of resource and damageability of crane beams over a long period of operation. A classification of the most dangerous defects in crane beams is proposed, taking into account not only the location of the defect, but also the mechanism of its development, as well as possible causes of its occurrence. The focus is on the effect of periodic loading on the initiation and growth of fatigue cracks. The article analyzes international research in order to identify methods and methodologies used to ensure the safety and reliable operation of the objects under study. It is shown that special attention should be paid to periodic examination for the purpose of early detection of cracks of various etiologies and timely adoption of the necessary measures. It has been revealed that the most effective approach to ensuring reliable and safe operation of the object under study throughout its life cycle is the collaboration of modern calculation methods, including fracture mechanics, and experimental techniques during periodic inspections, which will allow the crane beam zones to be ranked according to the likelihood of a defect occurring and reduce risk of sudden brittle failure.

Keywords: crane beam, crack, brittle fracture, fracture mechanics, shear deformation, normal separation, finite element method, ranking by fracture risk, maintenance, stress-strain state

Expert work has been carried out to determine the causes of the low adhesion strength of hand-molded ceramic bricks with Maxpol colored masonry mortar. The tests were carried out in accordance with GOST 24992 on 6 series of samples aged 7 and 28 days of hardening. The adhesion strength in the series of tested samples at 7 days of age, which were washed with running water, is 54% higher compared to the samples that were not treated.The compressive strength of Maxpol colored masonry mortar meets the requirements of technical specifications 23.64.10-001-79211444-2017 . The adhesion strength in the masonry meets the requirements of technical specifications only in a series of hand-molded bricks that have been treated with running water at the age of 28 days.

Keywords: ceramic brick, colored masonry mortar, adhesion strength, compressive strength, separation area

Calculation and analytical studies have been carried out on the influence of the duration of operation of nuclear power plants (NPP) when extending their service life on radiation and radiation-thermal changes of volume and compressive strength in serpentinite concrete of “dry” radiation-thermal shield (hereinafter referred to as “dry” shield) of Water-Water Energetic Reactors (WWER /VVER) different power. Concrete based on typical serpentinite aggregate from the Bazhenov deposit, used for the production for concrete of “dry” shield, is considered. It has been established that with increasing operating duration, radiation changes of the serpentinite concretes in “dry” shield of NPPs with VVER will generally increase monotonically and, in terms of volume changes, can become commensurate with or even exceed permissible values. In this regard, radiation changes in the concrete of «dry» shield should be taken into account when extending the operating life of nuclear power plants. It has been shown that radiation changes in the concrete of “dry” shield for NPPs with VVER-440 are 2 - 4 times more significant than of “dry” shield concrete for NPPs with VVER-1000. Radiation changes in the concrete of "dry" shield increase with decreasing average operating temperature. Thermal changes in serpentinite concretes of "dry" shield when exposed to operational and emergency temperatures increase with temperature and make a significant contribution to radiation-thermal changes in dry-shield concretes. The results obtained can be used to establish the permissible period for extending the operation of nuclear power plants with reactors of the VVER 440 and VVER-1000 types based on radiation-thermal changes in serpentinite concrete of "dry" shield.

Keywords: radiation, thermal, radiation-thermal changes, serpentinite concrete, “dry” radiation-thermal shield, water-water energetic reactors, extension of the operating life of NPP

The analysis of N.N. Pavlovsky's method for calculating the parameters of the riverbed in the branches is given. The reasons for the limitation of this method have been established. The Lagrange transform is used to find the extremum of the objective function for equations of uneven fluid motion, which makes obtaining an equivalent resistance modulus highly visual and easy to use. The results of the experiment are presented.

Keywords: calculation method, multi-node sections of rivers, resistance modulus, N.N.Pavlovsky method

This article highlights the theoretical results of analytical research in the field of the use of tethered balloons as carriers of barrier networks, which can be used as passive protection of particularly important civil and industrial facilities from unmanned aerial vehicles and other low-flying means of air attack. A diagram of an aerostatic barrier system, theoretically capable of countering air attack means, is presented. The elements of the methodology for determining the probability of damage to aircraft from cable type air barriers are presented.

Keywords: aerostatic air barrier system, unmanned aerial vehicles, tethered balloons, aerial protection of ground objects

The loads on the power floors and column foundations of modern logistics centers can reach 6-9 t/m2 and 1000 t, respectively. At the same time, the step of the grid of exploration wells in the mined areas does not allow reflecting on the geological sections the exact geometry of the occurrence of weak, untreated soils of backfilling pits. The use of a method for strengthening man-made soils by pressing in prefabricated prismatic piles made it possible to compensate for the missing information from engineering and geological surveys by controlling the forces of indentation and thus determining the occurrence marks of more durable foundation soils.

Keywords: engineering and geological surveys, the territory being worked on, man-made soils, soil reinforcement with piles, geological section