This article is devoted to the study of the characteristics of fine dust particles in the gym. The monitoring of the dust content of the sports premises with fine particles was carried out, and the dispersed composition of the settled dust was also studied. The regularity of the dust distribution in the room depending on the measurement height is analyzed. The analysis of the state of the system of external respiratory organs is carried out.

Keywords: monitoring, gym, dispersion analysis, fine particles, respiratory organs, PM2. 5, PM10, dust factor

This article is devoted to the study of the dust factor in the residential premises of a student dormitory during repair work, including the assessment of the regularities of the distribution of solid suspended particles by equivalent diameters (PM0.5, PM1, PM2.5, PM5 and PM10) and the determination of their concentrations.

Keywords: dust pollution, PM2. 5, PM10, solid suspended particles, fine dust fractions, student dormitory

As a result of the work, an algorithm was developed and a software tool was implemented that allows ensuring the confidentiality of information in the interaction between access subjects. The study of the dependence of the selected parameters of the elliptic curve on the processing time and transmission of the encrypted message has been carried out. Studies have shown that with an increase in the values of the parameters of the elliptic curve, the time for processing confidential information increases due to insufficient system resources.

Keywords: confidential information, information leakage, asymmetric encryption, information reliability, system resources, communication channel

This work is devoted to the problem of conducting a construction and technical judicial examination of a rolled roof after repair. The relevance of the use of roll roofing and its defects are considered. An example with a poor-quality roof repair is reviewed. Besides faults of the management of the homeowners' association were noted. These faults led to the emergence of ambiguity during the examination. They do not allow to interpret the situation in favor of the residents of the house fully, despite the obvious violations of the requirements of regulatory documents and the identification of significant defects. Considered a situation in which a dispute about the type of repair and related judical issues arises. Conclusions based on the results of the study were made.

Keywords: construction and technical judicial expertise, roll roofing, flat roof, maintenance, major repairs, defect, breach of joints

The article discusses modern methods of strengthening the bowl of a reinforced concrete pool in the development of project documentation for major repairs or reconstruction of capital construction objects based on the results of the survey and assessment of the technical condition of structures. To implement design solutions for strengthening the pool bowl, other methods can also be used, for example, using modern methods of strengthening using composite materials [9-11]. This will increase the rigidity of each structure and the bowl as a whole. The development and implementation of these design solutions using modern methods will allow you to qualify the design of the pool bowl in a working state and return the ability to perceive all the loads acting on it.

Keywords: reinforcement, major repairs, reconstruction, design solutions, reinforced concrete, composite, strength, load-bearing capacity

Diagnostic imaging is a necessary procedure for the accurate diagnosis and treatment of at least 25% of patients worldwide. Therefore, the expansion of opportunities for interaction between the doctor and the patient at a distance during instrumental diagnostics leads to an increase in positive treatment results. This article discusses the ways and problems of using additional devices, including robotic systems, in diagnostics. Having investigated the ways of using ultrasound diagnostic devices as the most informative and useful diagnostic method, and complementary technologies for expanding the capabilities of ultrasound diagnostics, the general principles of working with this equipment were determined. An algorithm for working during the survey was also developed. The definition of these principles allowed us to develop our own solution to the problems that arise when conducting a survey using these technologies.

Keywords: interactive medicine, patient, health status, health diagnostics, severity, condition assessment, counseling, instrumental diagnostics, personalized medicine, services

This work is devoted to the problem of carrying out construction and technical expertise of reconstructed public buildings. The main problems of modern reconstruction of urban development are considered. The differences between the reconstruction of public buildings and residential or industrial buildings have been revealed. The difficulties faced by the contractors during the reconstruction are estimated. The difficulties faced by the contractors during the reconstruction are estimated. The main points that experts turn to when examining a reconstructed object are noted. The disadvantages associated with the lack of a developed procedure for reconstruction and construction and technical expertise are considered. Conclusions based on the results of the study were made.

Keywords: reconstruction, public buildings, the specifics of the work performed, poor scientific study, human safety

Modern design cannot be imagined without the application of BIM technologies. Modeling is increasingly used in the design of new construction of buildings and construction, renovations and major repairs, which makes up the majority of projects underway. 2D programs are still used for the inspection of buildings and construction. Visual and instrumental examination is not a difficult task requiring complex programs. But the introduction of BIM technologies ensures the acceleration of work on the inspection of buildings and structures, significantly improves the quality of the result, and also maximizes the actual condition of building structures.

Keywords: modeling, visual and instrumental inspection, building, construction, building structure, building life cycle, defects, damage, actual state, technical characteristics, operation

The work is devoted to the problems of using modern digital technologies to manage the implementation of programs for the development of regional socio-economic systems. An approach based on the use of intelligent (knowledge-oriented) informationsystems for monitoring and analyzing the progress of programs is proposed. As a model for representing knowledge about the subject area, it is proposed to use the apparatus of the theory of linguistic variables and fuzzy production rules, which makes it possible to take into account the high level of uncertainty due to both the specifics of socio-economic processes and possible changes in external conditions. The inference engine included in the information system is based on the explicitly interpreted procedure of Mamdani's fuzzy logical inference, which makes it possible to form explanations of the course of reasoning. The developed structure of the intellectual information system is a concretization and expansion of the traditional structure, taking into account the reflection of the specifics of the tasks of managing the implementation of programs for the socio-economic development of the region. The preliminary results of the experimental operation of the research prototype of the developed system can serve as confirmation of the effectiveness of the proposed design solutions.

Keywords: regional socio-economic program, linguistic variable, fuzzy production rule, fuzzy logical inference, information and analytical system

The article deals with measures to preserve the ground bases of structures in a frozen state. It is shown that the methods of soil screening are cheap and do not use special equipment. These methods use different types of insulation: natural and artificial. The existing technologies of the device of thermal insulation screens on highways and engineering structures are described. It is proposed to replace polyurethane foam with extruded polystyrene foam. These materials are described and their physical properties are compared. The technology of the device of the heat-insulating coating is given.

Keywords: geoplites, expanded polystyrene, polyurethane foam, thermal insulation screen, foundations, permafrost soils, geotextiles,moss cover

In Russia, the legislative requirements of the municipal authorities of all regions are gradually becoming mandatory in the field of dismantling trade pavilions illegally installed on urban lands, which is why this article is so relevant. The article deals with the problems of determining the capital of trade pavilions in the judicial construction and technical expertise. An example from practical activity is given. The term "capital structure" is also considered and signs of capital are displayed.

Keywords: capital structure, construction, judicial construction and technical expertise, trade pavilions, construction expertise

Blasting operations are often the only way to prepare the material for the recess for laying roads and railways in the rocks. Explosive loosening is also used to extract stone as a building material. Field testing is costly and often dangerous. Therefore, it is necessary to first conduct a series of experiments on the model and find out the conditions for ensuring good quality loosening of rocks. In order for the results of model tests to be transferred to nature, a similarity between model and specimen is required. The approximate similarity is achieved by the equality of the similarity criteria for the model and specimen. The characteristic similarity criteria are obtained by analyzing the physical quantities inherent in a mechanical system using the theory of dimension and similarity. The received criteria are presented in the classical form. These are the criteria of Strouhal, Froude, Cauchy and Newton.

Keywords: explosive loosening, rock material, deceleration interval, similarity criterion, modeling, rock density, model, specimen, expansion height, dimensionality, physical quantity

Various options for connecting wooden structures are described. Examples of the use of various compounds, the most common today, are described. The advantages and disadvantages of such compounds are analyzed, and the technical characteristics of the elements used are given. Advantages and disadvantages of joints of wooden structures with the use of composite materials are described.

Keywords: wooden structures, joints of wooden structures, analysis, mechanical connections, comparison, load, strength, nagel, cool connection, mating, toothed plates

The article deals with the issue of production of electrode tapes. A mathematical model of the parameters of the electrode tape forming process is described. Mathematical calculations of the porosity, thickness and mass of the active layer are given. A conclusion is made about the composition of the impregnating rolls and the accuracy of dosing fractions. An example of calculating the molding parameters with an active CuO layer is given.

Keywords: electrode tapes, technologies, composite materials, thickness and porosity of the active layer

This work considers the controversial situations in the field of construction control, technical supervision and оbtaining a commissioning permit. The problematic situation, in which there was no (partially or completely) construction control at the construction stage, is considered. The difficulties of obtaining a Conclusion on Compliance in a similar situation and appealing the decision of the technical supervision authorities in court are picked out. Poor elaboration of mechanisms for obtaining a Conclusion on Compliance in the absence of construction control is noted. The shortcomings of the existing document and the lack of a prescribed legal status of the construction and technical expertise are highlighted. The ways of solving the existing problem at the legislative level are offered. Amending the existing legislative framework, reforms of existing or creating new mechanisms for resolving problematic situations in the absence of construction control are suggested as the main solutions.

Keywords: construction control, technical supervision, construction and technical expertise, commissioning, Conclusion on Compliance, amendment to the legislative framework