The article considers an experimental study of the stress-strain state of radial beam domes. The maximum stress values are fixed in stretched flexible elements with a peak value of 363.6 MPa. With the calculated resistance of the wire material Bp-I Rs = 410 MPa, there is a 12% load-bearing capacity margin. Note the high level of stresses in other flexible elements with values in the range from 141.4 to 274.72 MPa.

Keywords: radial beam dome, experimental studies, loading, strain gages, deformation

The problem of data transformation in which calculations are carried out in parallel streams is considered. The goal is to draw up such a plan for the parallel assignment of data by performers, in which the conditions of validity, reliability, redundancy and adequacy of data suitable for further analysis will be satisfied. At the same time, taking into account the desire to complete data conversion cycles in the shortest possible time. The use of transport-type models is proposed for the solution. In contrast to two-dimensional minimax models by the criterion of time, the possibility of transformation of information is considered, both at source points and at destination points. The proposed model allows you to take into account the time of data delivery between processing sites. The influence of possible rules for moving information packets through intermediate points on the final value of the management quality indicator is shown.

Keywords: information chains, transport task, minimum time criterion, processing costs, data reliability

This article proposes a way to automate work on the development of the construction schedule (CP) based on BIM-model. As an example we used the project of an oil well pad developed by VolgaTEKengineering LLC in Khanty-Mansi Autonomous Okrug in 2019.

Keywords: construction, building information modeling, BIM, 3D, 4D, 5D, schedule, estimate

The algorithm of the project development for the preservation of the cultural heritage object is considered. Recommendations are given for carrying out work on the preservation of the ruined temple for the possibility of its further restoration. A real example of a survey of an object of regional significance "Church of Archangel Michael" (Belgorod region, Valuysky district, village of Podgornoye) is given.

Keywords: conservation, object of cultural significance, survey, building structures, ruined temple

The article presents the results of experimental studies. The optimal time of dispersion of the mixing water together with the nano-additive has been determined. The results of experiments to determine the effect of carbon nanotubes and plasticizer on fine-grained concrete are also presented. Strength characteristics were determined for the studied compositions. Based on the data obtained, the effect of the dispersion time was determined, as well as the effect of the combined use of the SikaVC 5-500 plasticizer and carbon nanotubes "Taunit-M".

Keywords: fine-grained concrete, carbon nanotubes, ultrasonic dispersion, plasticizer

In the Russian Federation, there are settlements that can only be reached by special equipment: swamp walkers, SUVs. Permanent access to such settlements is hindered by swamps, rivers, etc. Temporary winter roads "autozymniki" are laid to such settlements in winter. The construction of "autozymers" includes several stages: the preparatory stage, the main stage of construction, operation of the autozymer and disposal. If a temporary winter road passes through swamps, then it is advisable to push such soils with tractors with widened tracks or tracked tractors. The article proposes the design of a articulated pneumatic roller for the construction of winter highways, and also carried out a design calculation including: calculation of resistance to movement, hydraulic calculation, selection of hydraulic equipment.

Keywords: winter road, machinery, automobile winter road, pneumatic roller, washing of swampy grounds, calculation

In the article the authors consider the influence of development institutions on the formation of the knowledge economy, it is proposed to evaluate their quality in the form of an index of institutional development. A method of evaluation based on objective indicators is proposed. A model for ranking regions is presented, including the calculation of indicators, on the basis of which a comprehensive integral assessment of the index of regional institutional development is carried out.

Keywords: knowledge economy, regional economy, innovation economy, innovation activity, socio-economic development, institutional infrastructure

This paper describes the process of developing machine learning models for predicting problem states. The formation of decision support systems in problem situations is based on the using of ensemble methods of machine learning: bagging, boosting and stacking. The algorithms of undersampling and oversampling is applied for improving the quality of the models. Using of complex machine learning models reduces the ability to explain the result obtained, therefore various ways of interpreting the constructed models are given. Based on the results of the study, a method for predicting problem states was formed. This approach contributes to the gradual solution of the identified problem situation and the consistent achievement of the goal.

Keywords: machine learning, bagging, boosting, stacking, problem states, data balancing, shap-values

A comparative analysis of the possibilities of using woven composite materials with specified sensory properties as information and measurement systems of the industrial Internet of Things (IIoT) is presented. It is proposed to consider such woven sensor systems as a basis for building a network interaction environment for components of wireless wearable sensor networks, as well as systems for monitoring the stress-strain state of products made of woven composite materials. To impart sensory qualities to such multilayer 3D fabrics at the stage of their development, it is proposed to modify their structure by introducing threads, on the one hand, having the properties necessary for the formation of data transmission channels, and on the other, being piezoelectric sensors, whose signals allow monitoring the dynamics of changes in the stress-strain state of a woven composite material.The release of a functionally augmented 3D fabric in this way opens up real prospects for conducting a full-scale experiment to study the sensory properties of spatially extended products made of woven composite materials.

Keywords: Wireless Body Area Networks, fabric sensors, textile sensors, Sensor Networks, E-textiles, Smart fabrics, woven composite materials, sensor data acquisition, Internet of Things

The article discusses the production and use of environmentally friendly fuel - pellets. A review of the designs of mobile pellet production plants was carried out, the advantages and disadvantages of these designs were identified. Potential consumers of pellets and equipment (heating boilers for which pellets are the fuel) are considered. A mobile complex for the production of pellets on the chassis of the MSN-10-004-03 . The technology of pellet production using a mobile mobile installation is described.

Keywords: pellets, mobile plant, design, biofuels, production technology

The article compares the principles of architectural designing industrial enterprises, which were fixed in the 70s - 80s of the twentieth century, and modern ones associated with changes in socio–economic relations in the XXI century. The specifics of the approach to the architectural design of large and small enterprises are described. Special attention is paid to the influence of economic factors on the industrial architecture of small enterprises, the importance of the time factor. The most acute problems that arise today in the architectural design of small enterprises are identified, and ways to solve them are proposed. A new functional element of the general plan of an industrial enterprise is described - the "development zone".

Keywords: Iidustrial architecture, principles of architectural design, functional zoning, "flexible" planning solutions

The problems of modern methods of building construction, namely the obsolescence of construction technologies and the production control system at most facilities under construction do not provide the required level of quality. Due to low-quality materials, formwork, reinforcement, laying and ramming, defects and deviations from the most important requirements for the finished product appear and resource costs increase significantly. Therefore, in order to develop and introduce effective measures to improve the existing methods of building construction, this paper lists the main disadvantages of the technologies used. The practice of applied innovative technologies that can increase the quality and speed of the structures being built is given. The technologies of erecting buildings using various fixed formwork designs are considered.

Keywords: sound insulation, shock noise, residential buildings, noise insulation, air noise, monolithic house, comfortable environment, noise, construction, materials

To improve the quality of bearing rings, modern production strives to apply new modern methods for detecting defects based on the causes of their occurrence, as well as to introduce quality control systems by creating specialized software. An accurate assessment of the dynamic properties of bearings is very important for machines and helps to avoid serious mechanical damage. As part of the experiments, the main control methods were considered and the most effective one was established - eddy current control, which has a number of advantages compared to others. To prevent the occurrence of defective products in the control system, the fractal dimension method was considered and a neural network was built to solve the tasks of diagnosing.

Keywords: defect diagnosis, bearings, neural networks, automated control, fractal dimension, SVD filtering, Matlab software, monitoring system.

The paper presents the results of numerical experiments on solving systems of linear algebraic equations (SLAE) with discharged matrices by the LU decomposition method, the Jacobi method, the Gauss-Seidel method, the modified Gauss-Seidel method and the modified Jacobi method with a relaxation parameter ω. In the course of numerical experiments on the solution of (SLAE) with test discharged matrices of various dimensions using the MATLAB package, it was found that the best results in the time of solving the problem were obtained by the modified Gauss-Seidel method with a relaxation parameter ω = 0.5 or a given accuracy of solutions ε= 10^-6. In the future, this method was used to calculate the integral characteristics of the functioning of distributed information processing systems for various practical applications.average system response time to user requests).

Keywords: distributed information processing system, a system of linear algebraic, equations, sparse matrix, LU decomposition, Jacobi method, Gauss-Seidel method, relaxation parameter

The problems of modern monolithic construction, namely errors in the installation of sound insulation in monolithic construction, require special attention, since the increased level of noise and vibrations during the operation of premises affects the psychophysical state of a person. Modern enclosing structures are often used in standard solutions without the necessary additional sound insulation. Therefore, in order to develop and introduce effective measures to prevent existing defects in the premises, this paper lists the main factors affecting the high level of permissible noise in the premises. The practice of applied methods and solutions used to improve the sound insulation of individual structures is given. The technology of performing works on the device of sound and noise insulation in residential premises, with an indication of the maximum permissible noise level, is considered.

Keywords: sound insulation, shock noise, residential buildings, noise insulation, air noise, monolithic house, comfortable environment, noise, construction, materials