The improvement of methods of electronic devices simulation is currently ongoing, so development the tests for these methods is the actual task at the present time. The goal of this paper is to develop the original test problem for efficiency assessment of numerical methods of ordinary differential equations solving and methods of numerical analysis of transients in electronic circuits and systems. The test problem is presented as mathematical model and electronic circuit too. Test problem and technique of estimation of numerical analysis algorithms’ accuracy proposed in the present paper can be used in circuit simulators and in computer mathematics programs to test both known and new simulation methods for electronic circuits and systems with various dynamics, including stiff and/or nonlinear circuits.

Keywords: numerical methods, electronic circuits, transient analysis, ordinary differential equations, stiff systems

In this paper we consider the question of creating a secure data environment in an organization based on technology VLC (Visible light communication) with the use of PLC (Power line communication) modem. The study analyzes the domestic and foreign literature and patent documents, which confirmed the relevance of the subject and the need to improve and adapt technologies to local organizations, grounded potentially better protection against unauthorized access to data in comparison with wired and Wi-Fi networks The structural scheme of realizing data transmission based VLC technology involving the use of LED light sources as a transmitter of a communication system with the integration of PLC interface. Using the PLC interface simplifies installation and implementation of the VLC transmitter modules, since the data signal is supplied to the latter on power lines providing power lighting. An assessment of conditions based on the technology transfer system functioning VLC with PLC interface, found that at the lowest acceptable signal / noise ratio equal to 6 dB bandwidth of the channel is equal to 8Mbit / s, and the bit error rate tends to zero. The research results can be used by VLC technology building enterprise network to the PLC interface, also find application for further study of this technology.

Keywords: vlc, li-fi,plc, visible light communication, modulation, receiver module, transmitter module, optical signal

This article presents some changes in the Russian science citation index, influencing the evaluation of scientometric indicators scientists, which in turn affects the assessment of scientific activities of the organization as a whole.

Keywords: scientometric indicators, performance indicators, scientist, RSCI, strategic management, higher education

The way of a task of a surface certain by a discrete framework by means of flat 3 fabrics is offered. The one-parametrical not parametrized family of curves, i.e. a discrete framework of lines is set. Two cases of a task of lines of a discrete framework of a surface are possible: dot ranks or equations

Keywords: Discrete, framework, surface, flat, 3 fabric, spline, equations, 3 fabrics, surfaces

The introduction of new standards of higher education, especially the mentality of today's youth lead to the fact that the established methods of teaching classes in high school, by the way, is still widely practiced, do not allow the full interest of students and to provide high efficiency of development of the subject. In connection with the above, great interest is holding lectures with interactive forms obucheniya.Odnoy of the most effective and low-cost training in interactive forms a lecture scheduled errors (lecture-provocation). Teach people to think, quickly analyze professional situations, to act as experts, to work in a team - all this is possible if we use different kinds of interactive activities, including this kind as to the planned lecture errors.

Keywords: systematic approach, improving the efficiency of the educational process, lecture scheduled errors, interactive activity, activation of learning and cognitive activity, technical discipline

This article includes mathematical models that optimize transportation costs flakiness rubble and dropouts

Keywords: flakiness broken stone, gravel, mathematical models, transport, optimization of transport costs

The article suggested the direction of automation of metrological support at the stage of production. As the object of automation is selected the calibration. The developed computer program that allows you to increase the simplicity and reduce the complexity of verification. The program is based on the revealed regularities in the execution of verification

Keywords: Metrological assurance, Metrology, calibration methodology, calibration, caliper SHC-1, Delphi

The paper discusses methods of measuring General emotional state of respondents as an indicator of social health of the study group, particularly in relation to the political field. It is based on a survey among students of the Rostov State University of Civil Building conducted at the end of 2015. The research was pilot in nature, all were interviewed 57 people of younger courses. Of these, 84% men, 16% women. The national composition of the sample was about the same as in all educational institutions. To measure the affective component of emotional States has been adapted previously developed a projective technique, based on the technology of semantic differential Charles Osgood. Levels of perception of emotional state were calculated for each Respondent individually, the proximity in the semantic space of the image of a real object from images of the ideal constructs. The paper presents the distribution function of the affective level was found in the linear model. In addition, to clarify the results of the interpretation, previously developed psychosemantic phenomenological nonlinear model was adapted to our conditions. Updated distribution functions confirm the trends obtained in the linear approximation. Obtained that on average the studied audience is characterized by a neutral emotional state, while 40% said their condition as negative and 33% positive. In the first approximation of the distribution function it is possible to allocate three groups of respondents. The subgroup with persistently positive emotional state (level of 0.4 to 0.6, on a scale from -1 to +1) – 14%, with a neutral or a slightly positive (0 to 0.3) is 44% negative – 37%. At the same time of the last population of the respondents 30% (of the total) are characterized by a small negative as (-0.3 to -0.1). And only 7% perceive their emotional state is quite negative (-0,4 level and below). And they are a subset of risk, which can develop socio-political tensions. Note that these estimates coincide with earlier obtained results based on the measurement of the perception of political orders. Designed questionnaire allowed to identify not only the affective component of perception of their own emotional States, but also cognitive. Comparative analysis showed that the estimation of the cognitive component is quite overpriced as a General emotional state, and the share of group risk (more than twice), which can develop the mood of protest. The study should be complemented by an analysis of affective component of perception of their emotional state.

Keywords: emotional state, affective component, cognitive component, semantic differential, theory of the perception of Coombs, the linear approximation, the distribution function, the nonlinear stochastic model, multi-agent model, risk group, political tensions

In article the decision of the task of finding of energy saving algorithms of closed control for electric drives is presented. The proposed approach is based on use of mathematical conditions of minimization of energy losses (power invariants) in electric motors as criteria of control. Energetic invariants for the main types of electric motors of a direct and alternating current are provided. For synthesis of energy saving regulators the principles and methods of the synergetic control theory are used. As an example the decision of the task of synthesis of algorithms of energy saving control for the asynchronous electric drive is considered. In case of synthesis of regulators the non-linear mathematical model of the asynchronous motor was used. The algorithm of energy saving control of the asynchronous electric drive providing stabilizing of angular speed of a rotor in the preset value and minimization of losses of energy is presented. Computer modeling of the closed system which completely confirms theoretical prerequisites and allows to draw the following conclusions is carried out. Firstly, the synthesized regulator provides asymptotic stability of the closed system of the relative set steady state. Secondly, at a variation of the external moment of efficiency of the electric motor remains constant and maximum. The comparative chart efficiency of the asynchronous motor in case of the energy saving control and traditional control realized in systems the “Transvector” type is provided.

Keywords: electric drive, automatic control, problem of synthesis of the regulator, energy saving

The results of analysis of regulatory requirements for dust collection systems based on existing environmental legislation. Development of systems for dust collection and dust extractor is using the tools of quality management. It has established a set of basic technical requirements for systems of dust removal and their parts taking into account modern requirements for energy efficiency.

Keywords: ecology, environmental regulations, dust collection, air quality management, dust collectors, energy efficiency

The article discusses approaches to the problem of increasing academic performance of the university students. Academic performance indicates the percentage of positive ratings received by students as a result of the exam sessions, excluding retakes. Analyzing factors affecting the academic performance is seen on basis of information from the assessments database of UMU portal of Don State Technical University. Highlighted basic factors (objects) that affect academic performance: study groups, teachers, subjects, exams timetable. In this paper, application of clustering methods allowed to use variance analysis of averages. Through two-way analysis of variance (ANOVA) established significant impact of object classes "Teacher" and "Subject" on the percentage of positive evaluations received by students as a result of the session. Given an example of group, teachers and subjects classes, on which the examinations timetable has a significant impact on exam results

Keywords: higher education, academic performance, ANOVA, factors, clustering

An implementation of the interactive technology for conducting laboratory classes on discipline "Technology of construction materials" in the form of a business game. A scenario is developed in laboratory classes with the elements of a business game. This interactive technology is being successfully implemented at the Department of "mechanical Engineering and applied mechanics" VITI NRNU MEPhI in the representation of the discipline "Technology of construction materials" and its sections.

Keywords: business game, an interactive form, technology of structural materials, protective coating

The mathematical basics of the non-classical approach to the logical synthesis of k-valued digital structures, based on the replacement of the classic mathematical apparatus of logic synthesis (Boolean algebra) to the proposed mathematical apparatus - linear algebra are considered. The limiting properties of Boolean algebra, preventing further improve the technical ICs characteristics are discussed. One of the possible directions of overcoming these properties is the transition to a multi-valued logic. A new in a logical synthesis concept of linear synthesis of digital structures is proposed. A strong definition of linear algebra and its basic properties are shown. The logic synthesis process of two valued and multi-valued digital structures in linear algebra, including the formation of bases of a linear space, the original representation of the implemented logical function, obtaining decomposition of logic function according to the system of basis vectors are considered.

Keywords: multi-valued logic, Boolean algebra, linear algebra, linear logic synthesis, linear digital structures, bases of the linear space, decomposition of logic functions, logical variable, logical synthesis, digital logical elements

Dynamic synthesis filter problem is presented in the form of the optimal control problem. The solution is obtained based on theorem of the maximum function of the generalized forces and the transformation equations of motion based on a characteristic of the Lagrangian analysis of the trajectories in the phase space-stve. It allows you to build Quasideterministic-ing model managed movement which admits repents representation as a quasi-linear. Syn-thesis Unity equation of the optimal filter dy-namic motion estimation parameters differs from the known feedback design. Abstract transient and stable operation is designed filter. Comparisons conducted with the results that are obtained using adaptive algorithm for esti-mating the moving Kaufman and alpha-β filter. On the basis of mathematical modeling showed that the evaluation of the filter have a higher accuracy at a lower cost computing.

Keywords: kinetic potential, optimal filter, the combined maximum principle.

Graphic information carried by hue contrast is actualized, mathematical description specificity of hue as the basic colour characteristic is investigated, theoretical bases of hue contrast control are stated, original algorithm and program for images hue contrast control are described, resolution of the offered method is experimentally estimated, scope of the created software product possible applications is outlined, efficiency of its application in expert problems is shown.

Keywords: graphic information, hue contrast, contrast control, algorithm and program realization, latent images

In this article on the basis of the theory of the systems of mass service (SMS) the analitiko-numerical model is developed for the distributed information system (IS) in the conditions of the high level of a network traffic. Expressions of criterion function for a problem of multiple parameter optimization of the transferred packages, formulas of calculation of characteristics of SMO on the basis of a vector of the stationary distribution of probabilities (SDP) are given

Keywords: the distributed information system, network traffic, the adaptive protocol, queuing system, Markov process, target function, multiparameter optimization, the state space, the infinitesimal matrix, vector of stationary distribution of probabilities.

The paper shows the relevance of the development of information services, allowing to intensify the work of physical culture chairs and provide the solution of problems associated with attracting students to a healthy lifestyle. The analysis of the service-user roles and the precedents related to these roles is given. The basic subsystems of the complex for the specific needs of information services of physical culture chairs were obtained: Educational work that provides the theme of the chairs and wellness and mass work. The list of major and reference documents for these subsystems based on the the activity diagrams was defined. It will be used in the database design later. The system analysis phase UML diagrams were created in MS Visual Studio 2013 environment.

Keywords: Physical culture, management of educational process, design methodology, life cycle stages, domain analysis, CASE-technology, object model design, UML, use case diagram, activity diagram.

the formulated problem is a special case of the transportation problem with xed surcharges in which the value of the objective function affect only the time spent on the delivery of resources by the affected routes and do not affect the volumes of transported resources. A solution based on the linearization of the objective function is appropriate in cases of time constraints on finding a solution. Second, because of its relative simplicity, this solution can be used as a duplicate procedure (to determine the lower limit) to more complex, such as, combinatorial, algorithms for finding exact solution of the problem. Modification of the method of Balinsky is the sequential reduction of dimensionality of the original problem by eliminating rows or columns of the matrix of transportation in which the true costs match the costs of these tasks

Keywords: transportation problem, the minimum total time, linearization of the objective function, the method of Balinsky

The model of a numerical estimation of information contents of the Internet sites, based on the thematic analysis of texts is considered. The estimation is made with use of the private qualitative criteria corresponding accepted to "values of a society». On the basis of the expert analysis and sociological interrogations sets of criteria for an estimation of a thematic accessory of Internet sites are formulated. Numerical value of conformity turns out with use of statistical methods of the thematic analysis. For the analysis sets of the linguistic keys corresponding to formulated criteria are used. The received result is used for reception of the generalised rating of the site establishing its social importance.

Keywords: thematic analysis, site rating, value of a society, ranging, linguistic key

mathematical models, optimizing the cost of sorting of wood, provide a rationale for dual-mode operation sorting line woodworking enterprise

Keywords: sorting line, round timber, mathematical models, forest drives

The article substantiates the necessity to address the effects of fog and rain when designing mobile robotic platforms and to define the fog numerical indicators and conditions of its occurrence. The common braking system structure and the working principle of brake disk drying through periodic rubbing of brake pads and disks are brought. The electrical diagram of brake control system with microcontroller and the fog and rain sensors and reliability analysis of this device are given. In a proposed control device operation algorithm the conditions of fog occurrence and the sensor parameters are considered. The algorithm is required to create a software system for mobile robotic platform.

Keywords: mobile robotic platform, fog, braking system, microcontroller, sensors, control system, software system

We explore the problem of the control system design of train asynchronous electric traction drives. The proposed train autopiloting contrl system ensures complex optimization of train traction, namely: keeping of desired speed of the wage wheels slippage relative to the rail thus ensuring the maximum traction; minimizes the loss of energy in the power unit of the electric traction drive under changing of speed and power of motion process. In order to solve the stated we use methods and principles of synergetic control theory

Keywords: railway transport, traction drive, synthesis of control systems, traction optomization, energy saving controller, adaptive control, slippage

In the article elements of the distributed systems using the principle of scanning for analog digital conversion and a data interchange are considered. The main attention is paid to the unrolling analog digital conversion of signals with further restoration of analog data with the given accuracy. Distinctive feature of the unrolling conversion is that value of counting of a signal contains information on time from the beginning of conversion. The formulas connecting value of counting of an analog signal over time of counting taking are given in article. This feature is used further for upgrade of formulas of Lagrange. In operation restoration of analog signals with use of formulas of Lagrange after their sampling on time using the unrolling analog digital conversion is considered. It is shown that use of the upgraded Lagrange's formulas doesn't lead to increase in computing expenses, but requires for restoration only value of counting.

Keywords: analog digital conversion, scanning analog digital conversion, restoration of analog signals, restoration of signals with use of formulas of Lagrange

We consider the method of texts comparison in Russian in the subtask of semantic proximity determination. It is performed a review of existing methods of comparison. It is proposed a method of determination of similarity degree between textual passages within a semantic class. Existing methods are compared with the proposed method and a comparison made by people, in an experiment, which shows the suitability of the proposed method.

Keywords: textual similarity, semantics classes, comparison of texts, semantic schemes representation, textual passages