As part of the analysis of the environmental situation on the territory of the Russian Federation in 2023, it was found that in 120 cities the level of atmospheric air pollution exceeds the permissible hygienic standards. Industrial areas are considered "hot spots" where various air pollutants are generated as a result of ongoing industrial activity. An assessment of the NDVI index values and the compliance of the landscaping area of the sanitary protection zones of the largest enterprises of the Northern Industrial Zone of Volgograd, located in the immediate vicinity of residential buildings, with established regional standards was carried out. The data obtained showed low values of the NDVI index and non-compliance of the landscaping area with the established requirements, which confirms the need for systematic monitoring of the condition of green spaces, the implementation of projects for landscaping sanitary protection zones, taking into account the resistance of the rock composition of plantings to harmful impurities contained in the ambient air of the plant.

Keywords: object of negative impact, sanitary protection zone, landscaping, normalized vegetation index, pollutant emissions, air quality of an urbanized area

The article deals with the principles of creating software used as part of sensing systems for restoring the visibility of the gas smoke protection service link in a smoke-filled environment during rescue operations. The architectural part of the device and the description of algorithms of the device operation are described. Attention is paid to the methods of forming a digital model of obstacle heights and visualization of the spatial situation. Approaches to filtering of erroneous sensor values and selection of significant contours of objects, processing of data from ultrasonic grating, infrared sensors, as well as temperature and humidity sensors are given. The role of the device in providing accurate navigation, reducing the time to search for the fire center and improving the overall safety of the gas smoke protection service unit when working in a smoky environment is emphasized.

Keywords: smoke protection service, smoke-filled environment, sensing device, algorithms, software, firefighting, reconnaissance, modeling, navigation, sensor data

The article discusses a mathematical model of the production application distribution process on an aggregator platform. A formal approach based on a finite state machine and Petri nets is proposed to describe the states of orders, their transitions and constraints. A comprehensive model has been developed that takes into account the criteria for selecting a contractor, selecting equipment, and analyzing the production process, taking into account time, cost, and resource availability. The presented approaches ensure accuracy and efficiency in order management on digital production platforms.

Keywords: mathematical modeling, finite state machine, Petri net, digital production, service aggregator, choice of contractor

This work is devoted to describing the development and integration of two key subsystems of an insect-like six-legged robot: a gait control module and a computer vision system for autonomous navigation. It examines architectural solutions, algorithmic foundations, and the practical implementation of components that ensure stable movement and intelligent interaction of the robot with its surroundings.

Keywords: insect-like robot, gait control module, computer vision, autonomous navigation, ROS2, SLAM, RTABMap, NAV2, OctoMap, tripod gait, Raspberry Pi, LiDAR

Polymer composite materials have been widely used in the construction industry. Currently, these materials are used to restore the operability of buildings and structures, regardless of their functional purpose. To date, the production process is carried out manually and in this regard, there is a need to develop tooling and organizational and technological methods to strengthen structures with polymer-composite materials that increase labor productivity. Due to the insufficient amount of research in this area, the regulatory documentation regulating the procedure for performing quality control of construction and installation works at all stages of restoration of building structures with polymer-composite materials is very limited. In this article, typical solutions for strengthening building structures are considered, various types of polymer-composite materials used in reinforcement are indicated, and the structure of the reinforcement process is described. In addition, an assessment of the time spent in the production of work manually and using small-scale mechanization with the use of additional equipment was carried out. It should also be noted that based on the study of domestic and foreign experience, issues requiring a systematic approach to their solution have been identified. The development and improvement of the regulatory framework, organizational and technological solutions will ensure the further development and application of composite materials in the construction industry.

Keywords: reinforced concrete structures, reinforcement, composite materials, technological solutions, entrance control, operational control, acceptance control

The article discusses a methodology for predicting global horizontal radiation for the day ahead, based on the concept of characteristic days – typical daily profiles of global horizontal insolation. The method is aimed at use in the absence of operational meteorological information and is intended as an alternative (backup) method of short-term forecasting in autonomous energy systems. As a test case, data from the Murino station (Khanty-Mansiysk Autonomous Okrug), obtained from the PVGIS service based on ERA5 reanalysis, was used. The average and median characteristic days for each month are constructed and the accuracy of forecasts using the RMSE, MAE, MdAE and R2 metrics is compared. It is shown that median profiles provide more stable results in conditions of increased weather variability. The method can be used for approximate planning of photovoltaic installations in remote and northern regions with limited access to meteorological data.

Keywords: solar radiation, global horizontal insolation, ERA5, statistical forecasting methods, forecasting in energy systems, forecasting horizon, forecasting for the day ahead, methods for constructing characteristic days, average and median profiles

The effect of the feed on the tooth on the durability of a carbide tool when cutting corrosion-resistant austenitic steel 08H18N10T on a milling machine is being experimentally investigated. The main attention is paid to the analysis of the mechanisms of tool wear, chip formation and the phenomenon of riveting in various cutting modes. It is shown that a paradoxical decrease in feed from 0.07 mm/tooth to 0.06 mm/tooth increases adhesive wear and worsens chip removal, which leads to a decrease in tool durability by 5.7% and a decrease in the number of cuts by 16-23%. The test results confirm that the optimal feed rate is 0.07 mm/tooth ensures a stable process with abrasive wear and curled chips, increasing tool life.

Keywords: cutting, austenitic steel 08H18N10T, carbide tool, tool durability, tooth feed, adhesive wear, chip formation, riveting, optimization of cutting modes

The article discusses the main methods of carbon black granulation, and compares the results with an existing industrial installation. The granulation process is necessary to convert powdered carbon black into homogeneous granules in order to simplify its further transportation and use. Despite the wide variety of granulation methods, there are problems with the uniformity of granules, equipment wear, and the formation of stagnant zones. As a result of the experiments conducted on the laboratory granulator described in the article, photos of the results are provided. Each of the methods used has a description of stagnation zones, which allows us to conclude that the most efficient method is to convert powdered carbon black into granules.

Keywords: pelletizing, wear, granulator, rotor fingers, experiment, technique, carbon black