The algorithm for computer simulation of x-ray images of mobile inspection systems is considered. Educational software which implements this algorithm is described. The goal is to develop the software that not only allows to view the final x-ray image but to design complex scene of 3d objects in interactive way and then use it to render the x-ray projection. The parameters required for precise and realistic x-ray image simulation are considered. They are the objects geometry and position, size and position of the detector and radiation source, the beam energy and other characteristics. Next, the algorithm and formulas for projection of 3D object onto detectors pane are given. Then, the algorithm for calculation of pixel color in greyscale is provided. It is based on traditional ray tracing algorithms like z-buffer used in computer graphics. The input data is the scene of complex 3D objects designed with built-in 3D editor in stereolithographic format. The file in stereolithographic format is used both to store the scene geometry and the characteristics of materials associated to its objects. The distance traveled by the beam inside the object is calculated using the ordered list of the mesh nodes of the object. As the basis of this algorithm is the law of attenuation for X-rays the attenuation coefficients stored in database are also used. Finally the picture of example 3D scene with hidden prohibited goods and rendered x-ray image with these goods visible are provided.

Keywords: computer modelling, computer graphics, computeraided drawing, x-ray, ray tracing, cargo control, stereolithography

The results of the pilot survey conducted in late 2016 are presented. The purpose of the measurement was identifying deprivation of students as a characteristic indicator of political tension among the youth. The cognitive component of the perception of their relative deprivation was determined by direct survey. Using the obtained results the distribution function of these parameters according respondents was constructed. In the whole group it was received a fairly low declared level of deprivation. The sub-group with low and average level is 92% and only 8% of respondents noted the high level of this indicator. Interpretation of survey data was conducted using the early developed psychosemantic phenomenological stochastic model. In the model the relationship of level of emotional perception with the received data was determined stochastic integral-differential equation. It had a Monte Carlo in the multi-agent simulation package AnyLogic. In the end, the statistical characteristics such as the distribution function for affective perception of the relative deprivation according respondents were determined. In the whole group affective component is higher than the declared cognitive one. It is suggesting the need for assessments of deprivation using not only the cognitive measure, but also affective measure. In particular, the proportion of respondents with high deprivation according to this estimation higher than that obtained by direct survey and is 12%. This part of respondents is a subgroup of the risk opportunities for the development of the protest.

Keywords: political tensions, relative deprivation, cognitive component, a direct survey , the affective component, semantic differential, stochastic model, a typical potential, Monte-Carlo distribution function, group risk

Abstract: The analysis of absolute stability is reduced to solving the problem of the distribution of the roots of a real polynomial with respect to the unit circle.Televisions recurrent expressions for by the computer to determine the coefficients for a system of arbitrary order. The machine is a technique for solving the problem of the distribution of the roots of the polynomial by computing determinants innorov and counting the number of sign changes in the ranks of the special values innornyh determinants whose elements are uniquely associated with the parameters of the system under study. To calculate determinants of matrices of values can be reduced to a triangular form, using the Gaussian elimination algorithm. However, a special kind of matrix (the presence of the left triangle of zeros) provides extremely effective double triangulyarizatsii algorithm that allows to determine the values innorov by computers with minimal cost.

Keywords: Keywords: nonlinear pulse systems, the calculation of the coefficients of polynoms, building innornyh matrices, determination of absolute stability on the basis of analysis of the distribution of the roots of the polynomial by computing determinants innor

The possibility of improving the management efficiency of the main business processes of a logistics enterprise on the basis of an integrated assessment of strategic risks is considered. The methodology is based on the idea of sharing the technology of simulation and two concepts: the Balanced Scorecard (BSС) and the Integrated Risk Management System (IRMS). We propose formula for calculating operational risk based on port statistics collected while running the simulation model, namely the chosen values of the triangular distribution of the statistical data. Also presented a formula linguistic evaluation of integrated strategic risk, lead to the conclusion the risk that previously designated port strategy will not be achieved.

Keywords: Strategic risk, risk management system, logistics enterprise, business processes, balanced scorecard, strategic map, management decisions, competitiveness, simulation modeling

An inportant and challenging task for a market analyst is to predict a value or a direction of a certain indicator based on the behaviour of a given financial instrument. In this paper we use random forest algorithms to predict a value and a direction of an implied volatility of RTS index options. We collect and prepare the historical data with an algorithm which takes into account both the actual trades history and the ordlog. We then examine and use the effect of volatility clustering which can be observed on such options. Finally, we construct some simple option trading strategies based on the predictions we made and measure their performance on a subset of our historical data. The results obtained shows that such approach can of use as one of the mechanisms for making decisions in practical trading, and needs further research.

Keywords: option, trading strategies, random forest, RTS index, spot market

The article discusses research methodology of intrapersonal conflict by using the affective component of appropriate social attitudes. We analyze three kinds of internal contradictions. Which are classified by K. Levin as the conflict of ""Desire-Commitment"", ""Avoidance-Avoidance"" and ""Commitment-Avoidance"". They are all connected with a choice of appropriate object or action (equal or different valences) of the two equally probable. The affective component of perception of such internal contradictions is determined by the technology of semantic differential on the basis of the survey conducted at the end of 2016 among students DSTU. For the interpretation of the results used the previously developed technique. The distribution functions of the emotional perception of those conflicts are described in article. Which were calculated as in the linear approximation and a nonlinear lookup psychosemantic model. It is obtained that the average affective perception of the studied conflicts neutral or close to that. But the researched audience is very heterogeneous in its emotional attitude to such conflicts. The distribution function is strongly smeared almost all over the range of levels of perception. While approximately half of the respondents are characterized by positive attitude to internal contradictions. This suggests that positive role of conflicts associated with the resolution of problems of an appropriate level subconsciously affects on estimates. A few unexpected results were obtained by a comparison of the perception of conflicts ""the Desire-the Desire"" and ""Avoidance-Avoidance"". Distribution function for the problem of the choice of two positive options is being shifted to the left, in the negative direction, compared with the function for a choice of two unattractive possibilities. The work has shown the promising use of such figure as the affective perception for researching of intrapersonal conflict. The obtained results possess as General methodical so purely situational, specific significances.

Keywords: conflict, intrapersonal, emotional perception, semantic differential, psycho-semantic model, distribution function, stratification of groups, comparative analysis, perception of types of conflicts

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

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

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 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 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

This article describes the developed universal system for ensuring the safe movement of multicopter indoors. The system solves the problem of the avoiding the obstacles when multicopter moves. System includes the following devices: 8 ultrasonic distance sensors, one infrared distance sensor, the electronic board to control sensors and multicopter, and radio. The ultrasonic sensors detect the obstacles in the horizontal plane of the multicopter. Infrared sensor is used to stabilize the height of multicopter. The system captures device management from operator when the machine enters the danger area. It calculates the best driving direction that multicopter not to collide with an obstacle, and drives the multicopter to a safe distance.

Keywords: drone, multicopter, safety, obstacle avoidance, management

This article describes an estimation of developed data exchange protocol robustness. Protocol is used in wireless connectivity. This protocol was made for delivering data from a meter to GSM-concentrator. This system is a part of hardware-software complex for energy resources and water metering. To solve this problem an imitation model was developed, which consider various collisions on the line. The purpose of modeling is to estimate probability of failure while transmitting daily data from meters to GSM-concentrator. The model was made of N random number generators, the period of time is divided into time slots. These generators give random slots which is a modeling of random transmissions. During modeling we consider a simultaneous transmission of two generators as a failure. Then the model was modified to address the possible “semi-collision”, when two generators use slots which are close to each other. The results of modified model show that probability of failure using developed protocol is negligible.

Keywords: еnergy resource, meter, complex, radio channel, probability, collision, failure, imitation model

Stable functioning of the organizational structure under external influence, volatile external environment, internal changes and restrictions determined by the ability to forecast the head of the emergence and development of crisis situations and effectively influence them. We propose a model of the possible schemes for generating a crisis of development and the achievement of objectives of scenarios in crisis situations. A set of actions, which is defined in the modeling process, provides many options for development of the situation. It is also determined by various ways and means to achieve this goal in a dynamically changing conditions of existence. The main components of the model are the objects that characterize the organizational structure and the factors influencing them. Rules and restrictions that form the domain of the specific behaviors of the organizational structure and the external environment, are also components of the model. The components characterizing the result of modeling the behavior of the organizational structure, objectives and criteria are their achievement. The paper presents the structure and mechanisms of formation properties of the base object, on which are formed various types of facilities involved in the modeling process. A part of the rules on the nature of their activities and use in the simulation. The structure and mechanisms of formation properties of the base object used to implement flexible modeling algorithms. Algorithms should take into account the peculiarities of consideration of the organizational structure of management tasks in conditions of instability, multifactorial effects and dynamically changing rules and constraints on resources and allowed actions.

Keywords: model, base object, organizational structure, situation, limitation, impact, factor, target, structure, process

In the article the method of dynamic repeller formation in case of drone movement control is offered for use in the three-dimensional environments with obstacles. Erle-HexaCopter is considered as drone in this article. Article contains the short description of a hexacopter mathematical model and positional-trajectory control movement algorithms. The method is based on representation obtacles as dynamic repeller is offered. Dynamic repellers are formed depending on the distance from the drone to the obstacle in the movement process. This method is analyzed and simulated in Matlab. Cases with one or several stationar obtacles are considered in simulation. In conclusion, we formulated the revealed features of this method

Keywords: Hexacopter, unformalized environment, 3D, round of obstacles, movement control, repeller, drone

This paper represent a method of unstable modes and concept of virtual point applying to unmanned aerial vehicles in 3D. It describes details of unstable modes for vehicle control, as well as virtual point method in 3D and its procedure. As an example of vehicle, we use hexacopters. Paper shows simulation results for a number of cases: a flight from point to point in undetermined environment with obstacles and path-following in undetermined environment with obstacles. The efficiency of the method with various coefficients is analyzed. In conclusions we discuss about limits of the method and the recommendations of its use.

Keywords: unstable mode, hexacopter, vehicle, virtual point, UAV, obstacle, simulation, flight, position-trajectory control

in the article the method of finding the optimal value of the probability of failure-free operation of machine parts with constraints on resources, the characteristics of the structure and economic performance. The algorithm for calculating the total economic cost of failure removal, implemented in the software algorithm block MRM and choosing the best option of manufacturing parts. As an example, the handle of the EC-14, single-bucket excavator. The optimal uptime probability value equal to 0.999 and corresponds to the structure, which is 7% more than the original, but is reduced to 2.2 times the total cost of eliminating failures.

Keywords: reliability, probability of failure-free operation, resource, machine parts, shovel, handle, optimization, the cost of failure removal, modeling, economic calculation

The process of forming the surfaces is the first step in designing of a physical model of the product. In the article one of ways of formation of surfaces, which lines are lines of congruence, is considered. In the article the model of the first order’s congruence of the equi-affine images of the circles, which are received by elliptic rotation of the plane, is developed. This congruence does not have focal lines. Equi-affine images of the circle are ellipses, which are equal on the area. Structural elements of the received congruence are specified, types of coordinate lines of curvilinear coordinates are considered. The parametrical equations of u-congruence and its surfaces, formed by immersion of any line in congruence, are synthesized. Constraints for the inputting parameters of the equations are specified. Examples of surfaces at immersion of a straight line, ellipse and the spiral line with the image of the immersed line on the received surface are given.

Keywords: Congruence, equi-affine transformation, elliptic rotation, parametrical equations, generatrix, circle

Every year the number of users of the global network Internet. Due to the rapid pace of development of portable technology is the most relevant method of Internet connection is a wireless connection. In a Wi-Fi network provides for the use of the access method to a common transmission medium CSMA/CA. The method is probabilistic in nature, which ing does not guarantee a successful message transmission in the case of high inten-zivnosti network traffic. For this reason, networks that use this access method, are ill-suited to address control tasks in real time. Some modification of the access algorithm CSMA/CA eliminate such disadvantages of Wi-Fi networks, such as: - inability to use such networks for solving control tasks in real time; -.the inability of priority service subscribers. In the article the results of researches of possibility of correction of the access method CSMA/CA by applying an intermediate driver in the stack of network drivers.

Keywords: intermediate driver, access method, wireless network, collision, medium