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  • Types of formwork systems for frame and monolithic construction

    The main types of formwork systems used in monolithic construction are described. The types of formwork by construction, by the type of concreted structures, by the base material, by turnover, as well as the types of formwork during concreting under different temperature conditions are considered. The historical reference of the appearance of the formwork is given.

    Keywords: formwork, frame-monolithic construction, structures, vertical, horizontal, large-panel, small-panel, block, volume-adjustable, heating, inventory formwork

  • The main stages and features of geodetic works in the implementation of land management measures

    Conducting land management activities is one of the most complex processes, as it includes a large complex of works aimed at studying the state of land resources, their distribution and the organization of the territory as a whole. A special place in land management is given to geodetic works, which are characterized by sufficient complexity of their implementation. In this regard, there are many questions concerning the organization and implementation of this type of work. This article will discuss the main stages and features of geodetic works in the implementation of land management measures.

    Keywords: geodetic works, land management measures, topographic and cartographic materials, topographic and geodetic surveys, cameral works, geodetic basis, survey networks, technical specification, cadastral plan, rational use of land resources

  • Physical and mathematical sciences. Physics

  • State of research of surface properties of metal systems based on Sn, Pb,In and wetting of aluminum and copper by them

    In this work the data about the surface properties of melts on a base of Sn, Pb, Inare given. It is shown, that the best effect of wetting at brazing alloys Al- 4 аt.% Li is attained with the help of an eutecticum of system stannum - aluminium. It is shown, that at photon bakeout of films of stannum on siliciums within 3-4 seconds improvement of their wetting by melts on a base of stannum is provided. Perspectivity of use of composition solders on a base of copper and a nickel imbued by melts of stannum with small additives alkaline and alkaline-earth elements is marked.

    Keywords: surface properties, brazing, ceramics, wetting, photon annealing, aluminum, surface tension

  • Technical science. Informatics, computer facilities and management

  • Automating database access for components in a Kubernetes environment

    This article describes automation of getting security-sensitive data required for database connectivity in Kubernetes environment.

    Keywords: Kubernetes, Vault, Helm, automation, security, database, Deployment, Job

  • On the work of fiberglass pipes in engineering heat supply systems

    The example of application of fiberglass pipes on epoxy binding at replacement of steel pipes in heat supply system is considered. Fiberglass pipes in the deals with the influence of the degree of polymerization of the binder in the composite material of pipes that does not comply with the normative values on the work of the elements of the heat supply system when the coolant passes through it. When installing pipelines made of composite materials based on thermosetting polymers operating at elevated temperatures, it is necessary to control the supplied products for compliance with its regulatory requirements with mandatory control of the degree of polymerization of binders.

    Keywords: fiberglass pipes, degree of polymerization, linear thermal expansion, shrinkage stresses, quality indicators, operation

  • Software application for building the simplest emotional education of a robot that responds to sound incentives

    Currently, there are general mathematical models that allow calculating the simplest emotional education of a robot. Using these models, computer programs are implemented, for example, VibraImage by Elsys, which сalculates the simplest emotional upbringing based on the microvibrations of a person's head placed in front of a computer's webcam. However, it is not always possible to use the VibraImage program in specific situations. The purpose of this article is to describe an algorithm and software application for calculating the parameters of the simplest emotional upbringing of a robot according to the amplitude of a sound incentives acting on the robot. A formula is obtained for the simplest emotional education of a robot using the amplitude of the sound signal affecting the robot, as well as the ratio for evaluating the parameters of the simplest education of work. A computer program is described that allows one to calculate elementary education, memory coefficient and ultimate education of a robot using an audio file, which is a sound signal affecting the robot. The nature of the relationship between the parameters of the simplest upbringing and the length of the sampling step is determined. Identified the most suitable value for the sampling step length.

    Keywords: robot, education, memory coefficients, amplitude of a sound signal, mathematical model, psychology of robots, limiting education, elementary education, computer program, sampling frequency

  • Modeling and visualization of pipe bending trajectories using a MEMS sensor

    In this paper, we propose modeling and visualization of the pipe movement trajectories in a pipe bending machine. Mathematical equations for converting quaternion data to Euler angular data are presented. The paper uses the method of double integration on the acceleration data from the IMU-9250 MEMS sensor to obtain realistic speed and location. The program is implemented in the MATLAB environment for visualization of pipe trajectories in 3D representation.

    Keywords: the trajectory of the object, the device of inertial measurement, MEMS

  • Software implementation of the neural network training algorithm

    The article deals with the issues related to the design of control devices for technological equipment based on artificial neural networks. The algorithm of the neural network training process based on the Widrow-Hoff method is developed, designed for computer-aided design of artificial neural networks operating in the environment of a microprocessor system or a personal computer. The authors perform a software implementation of the algorithm for training a three-layer neural network using the C# programming language on the platform Microsoft.NET. The program uses a neural network training algorithm with a "teacher". The article shows the interface of interaction of the developed program with the "teacher" (designer of neural networks). An example is given of the development of an artificial neural network that performs the function of a binary number adder. The results of the research can be further used in the development of a computer-aided design system for artificial neural networks, and can also be used in the development of software for microprocessor control systems for technological equipment.

    Keywords: artificial neural network, training, algorithm, programming language, neuron bias, adder, input signals, output signals, synaptic connections, neurons

  • Recognition of defects on metal alloys using OpenCV computer vision algorithms

    The purpose of this work is to develop an algorithm for recognizing shrinkage defects on metal alloys. The steps for image processing are described. When analyzing the algorithm, a description is presented for each step, followed by a software implementation. The final step, after using the methods of the algorithm, is to count the contours of the defects. To demonstrate the functionality of the software, random photos of the metal body in the section were taken, where defects in the form of gas pores can be directly observed. The software, with the correct selection of input data, processes the image with high accuracy, minimizing errors in calculating defects. Using the proposed algorithms reduces the diagnostic time. The article presents a comparative description of the manual and automated methods, showing the effectiveness of the second method in comparison with the first. To write the software, the Python 3.7 programming language was used, as well as the OpenCV computer vision algorithms library.

    Keywords: defect detection, computer vision algorithms, OpenCV, metal defects, shrinkage defects

  • Use of random sample consensus in digital image reflection symmetry detection problems

    Symmetry detection is an important task that arises in MRI analysis, TEM microscopy and other scientific and industrial problems. Current methods of symmetry detection usually analyse SIFT invariants or use voting schemas. The article proposes and analyses an optimization problem that can be used to describe the image symmetry detection pipeline in terms of correlation and similarity. The article also describes an algorithm that solves the aforementioned optimization problem using a ransom sample consensus voting scheme, thus bringing the proposed method closer to other RANSAC-based methods. It is shown that an implementation based on the proposed model outperforms SIFT-based detectors, and stays in row with other voting-based methods; it is also shown that the algorithm's parameters could be adjusted for specific tasks to improve the detection quality. The article also compares the proposed method with other existing solutions in terms of accuracy and precision; visualizations are also included.

    Keywords: RANSAC, random sample consensus, reflection symmetry, computer vision, image processing

  • Optimization of the distribution of reactive power of substations of power systems

    The choice of the installation location of compensating devices is determined by various factors that must be taken into account when performing calculations. The location of reactive power compensation devices is determined based on the results of mathematical modeling and the optimal operating mode of individual sections of electrical networks. The paper presents the results of modeling, considers the uncertainties encountered in solving the problem of placement of compensating devices.

    Keywords: compensating devices, electric power industry, active power losses, minimum reduced costs, uncertainty, power gain, optimization criteria, electrical node, damage vector, optimization

  • Interpretation of the National Russian pattern in Modern embroidery by means of Digital technologies

    Methods of interpretation or prototyping of a historical textile sample are not widely covered in the modern scientific literature. But they play a significant role in the reconstruction of certain types of objects. Costume reconstruction is an important part in the field of theater and cinema. The modern fashion image also takes inspiration from history. Now the author's products retain a significant position in the fashion world. The growing interest in ethnic techniques and motifs, as well as in the national peculiarities of textile decoration, requires a detailed study. In this article, we will outline the main software packages, digital tools, and how to use them. In search of original historical sources, we turned to the unique collection of the Kosygin University. We studied a collection of hand-made towels and valances. The entire collection belongs to different periods of the XIX century. The article notes the technical features of the preparation of the embroidery module, which affect the quality of the product and the technology of its creation. There is a photo of the screen of the sewing and embroidery machine at the stage of technical tincture. Some manufacturing steps and a complete set of patterns are demonstrated. The finished product is a linen dress. The collar and cuffs are decorated with elements of standard embroidery. But each element has been revised and decorated as an ethnic element of the decor. The front part of the dress is decorated with embroidery of the author's design. The economic aspect of the use of an automated sewing and embroidery machine for the creation of author's products is noted.

    Keywords: russian national pattern, ethnic ornament, computer design of the pattern, digital design of embroidery, embroidery module, authorized embroidery

  • Forcasting of the productivity labour index for the central federal district

    In the given article a regression model of the labor productivity index from the investment dynamics into the fixed capital for the Central Federal District is build. The time series regression model is constructed by means of the trend deviation method. According to the obtained econometric model, a forecast of the labor productivity index for subsequent periods is made.

    Keywords: econometric model, forecasting, labor productivity index, investment, regression, time series, trend

  • Optimization of the architecture of the Unified automated information system of customs authorities

    The existing architecture of the Unified Automated Information System of Customs Authorities (UAIS TO) does not fully comply with modern requirements and the goals and objectives of the FCS of Russia. The problems of desynchronization and multiple duplication of data in numerous automated information subsystems, software complexes, information and reference systems and various software tasks that make up the specialized software of the UAIS TO create prerequisites for the occurrence of emergency situations, which leads to the likelihood of stopping data transmission during customs operations , delays in the release of goods and problems with the functioning of other regulated procedures. Proposals for improving the UAIS TO are presented in terms of technical architecture, in terms of information and software infrastructure and in terms of functional architecture such as: modernization, taking into account the trends of import substitution, increasing the computing power of the data center, improving the telecommunications infrastructure (high channel capacity, uninterrupted, guaranteed data transmission); centralization of information and software tools; implementation of a functional subsystem of a unified analytical storage of information.

    Keywords: automated information system, information system architecture, customs authorities, automation

  • Communication system model as a source of distinctive features

    The presented article describes the modeling of a communication system (hereinafter SS) organized by a plurality of communication nodes of a public communication network (hereinafter SS SSN) and its elements. The task of modeling is to obtain interrelated initial data on the set of features for each investigated SS of the SSNS at each moment of the model time, taking into account the implemented activation processes and the logic of SS functioning. The process of functioning with the SS as a source of features is studied using a complex analytical and simulation model, since deterministic and random factors are taken into account for its development. The manifestation of signs is a complex process, since the SS is constantly in dynamics. However, the increasing intensity of the increase in the use of communication means and the load in communication channels leads to an increase in the number of manifested set of signs. The reasons for the manifestation of many signs are such factors as: dynamics of movement of the USS of the SSOP; modes of operation of SSOP elements, etc. All of these factors are used in the model as activating the manifestation of many features.

    Keywords: communication system, public communication network, communication node, sign of a system element, information direction, activating factor

  • Methods for processing monitoring results with a dynamically changing level of database resolution

    At present, the number of means for collecting information about the characteristics of elements of a public communication system is increasing. Databases.

    Keywords: database, monitoring systems, information, resolution, processing of information arrays, similarity rate, process automation, public communication system, communication system elements

  • Application of Markov Chains for Modeling and Forecasting the Development of a Fire

    The transition of a fire from one phase to another is represented by a change in the states of the Markov chain. The phases of free combustion, extinguishing and elimination of consequences are considered. The initial data for constructing a Markov model is a sample of observations of response time indicators. Recursive expressions are constructed for estimating the transition probability matrix of the Markov chain. The predictive capabilities of the constructed Markov model of the fire development process are illustrated.

    Keywords: fire phase, Markov chain, transition probability matrix, termination probability, recurrent estimation, vector of initial probabilities, prediction

  • On the issue of improving the quality of food choppers

    The article deals with the issue of improving the quality of the food chopper. Both domestic and industrial shredders are considered. Engineering solutions are proposed that will reduce the operating costs of the consumer and increase the energy efficiency of the grinding process. These recommendations have been tested in production and are reliable.

    Keywords: quality, chopper, energy efficiency, blade, gap, angle, knife, grate, operation, production

  • Hybrid algorithm for assessing the quality of regulatory legal documents

    This article proposes a hybrid algorithm for assessing the quality of regulatory legal acts (RLA). This algorithm uses the methods of fuzzy mathematics, processes with their help the results of the questionnaire survey of the expert group. The result of the algorithm is the quality characteristic of the NLA in the form of a fuzzy term of a linguistic variable. As an option for automating this algorithm, a specialized automated system is proposed.

    Keywords: regulatory legal acts, quality assessment, fuzzy algorithms, automated systems, linguistic variables

  • Advance development imperatives: institutional aspect

    The modern period of development of society and the economy is characterized by the intensive development of new technologies, which began to fundamentally and on a large-scale transform the social space, transform production processes, and create completely new types of activity. The possibilities for their effective use depend on many components, but the most important role is assigned to the institutional component, which creates conditions conducive to the formation and implementation of advanced development.

    Keywords: advanced development, sustainable development, economic theory, institutional environment, infrastructure, education, development institutions

  • Simulink Simulation of Wheel Machine Center of Mass Oscillations

    The results of the study of fluctuations of the center of mass of the car UAZ "Hunter" during its movement on the support surface with different height of road irregularities: asphalt-concrete surface and off-road are given. The study uses Simulink simulation.

    Keywords: Center of mass fluctuations, vehicle, simulation, Simulink

  • Assessment of the potential to improve the response efficiency of fire departments by monitoring their readiness

    A method for indirect assessment of the effectiveness of the use of internal and external checks of the readiness of units of the State Fire Service to fulfill the tasks of responding to calls is proposed. The potential for efficiency gains is assessed by reducing various types of damage through improved response rates. The initial data for the assessment are statistical data on the temporal characteristics of the response of fire departments to calls, which are approximated by a gamma distribution. The estimation takes into account the regression dependences of damage on response indicators.

    Keywords: control, damage, response time, gamma distribution, quantile, efficiency improvement potential