The problem of calibration of a three-axis acceleration sensor is considered. A number of measurements obtained with the sensor at its different orientations in space are used as initial data for calibration. It is assumed that the sensor is stationary for each orientation variant. The measurement data are averaged at each static sensor position, and the averaged results are used as parameters in a system of nonlinear equations that are solved by the Levenberg-Marquardt method. The results of the proposed method in the article are presented in the experiment with a real sensor, which allows to check its effectiveness.

Keywords: three-axis accelerometer sensor calibration, the sensor coordinate system, the coordinate system of the gravitational field, the rotation of the coordinate system, the matrix of coordinate transformation, the correction factor, the average value of the me

Stable operation of computer equipment is important for its effective use. A significant role in ensuring stability depends on the reliability of the software. The article analyzes the state of the problem to improve the reliability of the software based on the models of reliability assessment. The methods of increasing the software reliability using time and software redundancy are analyzed. It is concluded that there is no universal solution to the problem of software reliability in the presence of many private solutions.

Keywords: software reliability, software reliability evaluation models, classification of software reliability models, methods of software reliability improvement

The article deals with the parametric method of pump unit diagnostics. The well-known methods of diagnostics are described, the comparison of methods is given. The parametric method allows to determine the current state of the pumping unit on the basis of publicly available information in the process of liquid pumping. The article presents a mathematical model of the system frequency Converter, engine, pump. An example of changing the coefficients of the diagnostic model is given.

Keywords: centrifugal pumps, methods, diagnostics, parameters, mathematical model, coefficient, diagnostic models

Passenger traffic is the number of passengers moving in one direction at a given time. Passenger flows are depicted in the form of graphs, maps, diagrams or fixed in tables. Research methods are divided into the following features; 1) by the length of the period covered 2) In terms of scope 3) by type Methods of automated research: - non-contact method -contact method To ensure the rational filling of the rolling stock, the proper fluctuation of passenger flows, the number, capacity and separation of the rolling stock on the transport network must change. Significant impact on passenger traffic has: the level of development of social production, social structure of society; way of life; geographical environment and the nature of settlement; development of technology; information and communication; budget of free time; cultural, domestic and social needs of people. In connection with the Providence of the world Cup is expected to be a huge number of fans in the city of Samara, for more capacity of fans, the route of personal and public transport has been changed. In the period of the 2018 world Cup will operate on two schemes of movement of vehicles: 1) Daily (in the period from June 14 to July 15); 2) Enhanced (for the period of game matches at the Samara arena stadium ).

Keywords: urban transport; personal transport; passenger traffic; routes; methods; passengers; daily mode; enhanced mode; world championship; traffic scheme

A thin circular disk is considered, the material of which exhibits elastic and plastic properties under thermal and force influences. In the central part of the disk, the temperature field is uniform. At the boundary of the disk, pressure and a constant temperature are set. Approximation of a plane stress state is adopted. The additive form of the connection of full, elastic, plastic deformations and deformations under free thermal expansion is considered. Elastic deformations are expressed in terms of stresses according to Hooke's law. A linear approximation of the dependence of the plasticity limit on temperature is proposed. The possibility of neutral loading of the central region of the disk and its external boundary is shown. Especially distinguished is the condition for the plasticity of Tresca.

Keywords: mathematical modeling, elastoplastic body, plane stress state, piecewise-linear plasticity conditions, plastic flow theory, thermoelastic plasticity

An approach to real time modeling of automotive FMCW radar performance in autonomous driving applications is proposed. Simplified model of driving situation and model of reflected signal are developed on the basis of commercial automotive radar performance. Complex solution for radar sensing modeling was produced. Modeling results are represented.

Keywords: autonomous car, computer vision system, modeling, automotive radar, scattering centre, Fourier transform, radar image

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: velocity of crack propagation. Gorilla Glass, fast fracture, Sapphire, displacement of deformed bodies,

The steps of constructing an algorithm for calculating the stressed and strained state of a thin circular disk experiencing thermal and force effects are discussed. A homogeneous temperature field is created in the central part of the disk. Within the framework of the theory of the flow of an ideal elastoplastic body, conditions of general plasticity are considered. It is assumed that the plasticity limit for uniaxial tension is common for all plasticity conditions. Dependencies between the disk radius, the temperature of the central region of the disk and the external pressure, which determine the appearance of plastic regions, are established. For piecewise-linear plasticity conditions of general form, analogous dependences are defined, when singular plasticity regimes are realized at elastoplastic boundaries. For different values ​​of the input parameters of the problem, the stresses, equivalent stresses and the hodograph of the stress vector are given.

Keywords: mathematical modeling, elastoplastic body, plane stress state, piecewise linear plasticity conditions, plastic flow theory, thermoelastic plasticity

In this papes analyzed two modern compression standards H.264 and H.265 by the next characteristics: maximum compression ratio, image quality and encoding time. As the result of research was revealed main limitations of the standards and was suggested the direction of developing a new standard, that will not use frame prediction, but reorganise videosignal to the reference model with ability to choose characteristics of new video

Keywords: compression, compression standard, AVC, HEVC, H.265, H.264, video, videosignal, singal transforming

The need to develop a wider range of methods and tools for system analysis and modeling, allowing to develop and implement anti-terrorism measures, was noted. The results of a model analysis of terrorist activity in media space are presented. The research is based on already approved model solutions. It is proposed to use the combination and integration of humanitarian knowledge and natural science tools. A cognitive analysis of the communication model of a successful terrorist attack and models of proactive counteraction to terrorist threats was carried out. Models are single- or multi-loop schemes with positive or multidirectional feedbacks. Functional-structural models for countering the coverage of terrorist activities in media space have been constructed. The context of the model of counteraction to terrorist threats is defined. Based on the hierarchical decomposition of the diagrams, the features of the structural organization of the counteraction process are investigated. The proposed model approach allowed to build a study, starting from the description of generalized structures to the analysis of the functioning of the system of counteracting the coverage of terrorists in the media space. The obtained models illustrate the mechanisms of formation of a system of links between state and public institutions targeted to deprive terrorism of its social base.

Keywords: functional-structural analysis, models, terrorism, proactive counteraction, communication, media space

At present, the state of the electric power industry is characterized by increased loads and a high level of wear and tear on equipment, which causes which causes increased attention to ensuring the reliability of the functioning of electric power facilities. In modern power systems an important role is assigned to sensors that monitor various parameters of the state of production assets. Improving the methods for mining, processing and analyzing data on the technical state of fixed assets is an actual task in conditions of transition to an actively-adaptive power grid (Smart GRID). The article analyzes the features of monitoring of electric power production assets. The structural diagram of electric power facilities was considered. Were highlighted selection methods controlled equipment parameters and determine their threshold values. For the processing and transformation received from the data monitoring systems, it is proposed to use an artificial neural network that will allow for the qualitative processing of the received information and to recognize the malfunctions in the operation of the sensors.

Keywords: electric power facility, Smart Grid, equipment monitoring, decision support system, neural network, data analysis

Differential game models of corruption in normal form and in the form of characteristic function in resource allocation are considered. The Nash equilibrium and Shapley value are found in the explicit form, ib the second case an imputation distribution procedure provididng the time consistency is described. Corruption in resource allocation is a very important socio-economic phenomenon which is well modeled by differential games. The time inconsistency means that the illegal collusion is not stable which has a big practical importance. The related work is discussed, an organizational-economic interpretation of the model is given.

Keywords: differential games, corruption, imputation distribution procedure, resource allocation

The paper presents a description of the developed software for three-dimensional graphics, which is designed to interpret a wide range of geophysical information and modeling data. Information technology is used to visualize data of radar observations of clouds, the results of numerical simulation based on a three-dimensional cloud model. Some features of the program are given. The fixed radar reflectance scale makes it easy to change the display threshold and explore the internal structure of the object sequentially by looking at the nested layers one after another. The functions of creating of horizontal and vertical sections of the object is provided. The program is created using open library OpenGL modules.

Keywords: application software, three-dimensional visualization, cloud parameters, radar reflectivity, simulation data

In article the UAV three-dimensional mathematical model on the basis of the quadcopter as most the UAV widespread type at the moment is developed. The quadcopter is based on a frame of DJI F-450. The first part of article is devoted to the mathematical description of the quadrotor model, namely: to a kinematics and dynamics models; to forces and torques operating on the UAV; to rotation matrixes; to the assumptions simplifying mathematical expressions. For the description of location and movement of the quadrotor in space also the bound will be used inertial reference frame. Therefore transformation from one frame to another is necessary. The simulation of the operation of the motors 1-4, which are electric drives of direct current, has been performed. Rotation of engines is transferred to screws directly. Movement of the quadcopter in the bound frame is considered in the article by the accounting of the models of a kinematics and dynamics describing the vehicle movement.

Keywords: quadrotor, UAV, kinematics, dynamics, 3D environment, DJI F-450, engine, traction, rotation matrix, vehicle

When identifying reserves of efficiency of management of production activities of enterprises should comply with a number of important principles. First of all, the identification of reserves should be based on knowledge of economic laws, the provisions of the dialectical theory of knowledge, the achievements of science and practice, that is, to be scientific in nature. It is necessary to know the economic nature and nature of economic reserves, the main directions of the search, as well as the technique and methodology of calculation and generalization. The search for reserves should be complex and systematic: complexity implies a comprehensive identification of reserves in all areas of economic activity and their subsequent generalization.

Keywords: management, production activities, reserves, efficiency, analysis, diagnostics

The analysis of research on the separation of rice seeds on new types of polymeric sieves showed the absence of regularities that provide the studied processes. There are no dependencies describing the effect of the kinematic parameters of the operation of the sieves on the intensity of the separation processes of rice seeds. We performed a system analysis of the sieves with different types of holes. In the work, mathematical dependences between the amplitude and frequency of oscillations are determined for swinging polymer sieves.

Keywords: Rice seeds, polymer sieves, separation process, grating mill, kinematic parameters, mathematical dependencies

The paper presents modern techniques of the methodology of system approach to training. The paper presents an analysis of the features of the methodology of research work by students of the College as an element of an integrated system of education in the design and construction of equipment for the construction of pipelines and installation of bored piles. The article is devoted to the peculiarities of the methods of possible practical cooperation of secondary vocational and higher education systems in the system of research and development work.

Keywords: research work of students, efficiency, pipe-laying crane, suspended cargo handling device, analysis, design features

The relevance of modeling, design of digital devices and further synthesis of it on FPGA are substantiated in this article. This approach is demonstrated by example of microprocessor with famous architecture MIPS on the VHDL language. The further modeling, synthesis on FPGA by Altera and test on the specific example confirm the opportunity of prototyping real digital devices with the introduсed method.

Keywords: microprocessor, test, programmable logic integrated circuit, digital device, verification, model, hardware description language, field-programmable gate array,pipeline ,MIPS

n the framework of this article describes the development of a program for servicing HTTP clients in automatic mode. The program allows clients to receive, register, re-write and delete resources. The input is given to the address of the configuration file, which lists the main parameters and the resource directory. During operation, the server accepts the incoming connection, determines the requested resource, its acceptable version, and, verifying the feasibility of this method, performs the corresponding operation. The work process is accompanied by the output of information about the processed requests: the ID of the processed stream, the client address, the method, the resource identifier, the status code.

Keywords: HTTP server, HTTP protocol, web server, client-server technology

The present publication continues the presentation of the results of the project of creation of Russia's first Engineering forum for scientific and technological activities, social and technological entrepreneurship "Rozmysly", developing the principles of open public interdisciplinary electronic environment. The development of new communication technologies in the framework of educational projects on the forum platform is revealed. Educational projects make it possible to involve in scientific engineering knowledge an even wider range of specialists-practitioners, research engineers, young scientists, applicants, graduate students, students by providing them with opportunities for remote participation in educational projects. It is shown that the basic advantage is achieved through the implementation of the principle of professional social network, which is a kind of interdisciplinary scientific and technological engineering forum.The project "Engineering open public forum of scientific and technological activities, social and technological entrepreneurship "Rozmysly" of the Rostov branch of the Russian engineering Academy is carried out using the grant of the President of the Russian Federation for the development of civil society, provided by the presidential grants Fund.

Keywords: website, Internet platform, engineering forum, open access, training, foresight

The article describes the problem of uncertainty estimation by GUM method and Monte Carlo method on the example of educational measuring procedures and the limits of methods applicability. Examples of the transformation of distributions are presented.

Keywords: measurement uncertainty, propagation of distributions, Monte Carlo method, influence quantity

The software package, realizing the calculation and graphics visualization of asymptotic behavior at big time of dominant terms of velocity vector components at 2D motion of rotating stratified liquid, is developed. The mathematical model, which lies at the basis of the software package, is presented. The structure of the software package is described. The application of the software package in the study of fluctuations in stratified fluid is shown.

Keywords: stratified rotating liquid, mathematical model, software package, asymptotic behavior, dominant terms of the asymptotic forms

The operation of finding the remainder of division is an arithmetic operation that plays a big role in number theory. The most important role this operation has in the design of devices using, modular arithmetic. Modular arithmetic has high parallelism and is often used with high-dimensional data to speed up computations. When working with modular arithmetic, data of large dimensions (about 128-512 bits) are often used. To find modular representation of data, effective way is needed to find the remainder from the division of multi-digit numbers by the corresponding set of moduli. The article explores the methods for constructing devices for finding the remainder of the division, for large dimensions of input data, in which the divisor p - is a constant and is known at the device design stage. The options for implementing such devices are investigated, their optimal parameters are determined, and the delay and area compared with the Verilog operation "%", both in the VLSI and in the FPGA synthesis.

Keywords: residue number system, remainder of division, modulo operation, cad

Analysis of the texts of Tuvan folklore is extremely important for the identification and preservation of cultural and ethnographic knowledge about the past of the Tuvan people. Electronic collections of works of Tuvan folklore are created for these purposes. The electronic collection "Tuvan heroic legends" contains digitized texts of works, their meta descriptions, reference books of narrators and language standards. Such information is well-structured and allows presentation in the form of a table "object-attribute", called a context. Context reflects the presence or absence of features characteristic of the studied works. Having a context, using mathematical methods, it is possible to solve various problems of machine learning with reference to the texts of the Tuvan heroic epic. The paper proposes a program for forming contexts for the electronic collection "Tuva heroic legends". It described in detail the basic functions of this program. This research was conducted with the support of the Russian Humanitarian Scientific Foundation, grant 16-34-1-01033.

Keywords: electronic collection of documents, Tuvan heroic epic, binary context

This article includes a short description of correlation method of identification system in applying for electromechanical stabilization system of video camera. It also includes experimental confirmation of the calculation results. The simulation model of the device is developed on the basis of the results obtained.

Keywords: identification, problem of "black box", Volterra-Wiener series, impulse response, simulation modeling