When using maskirators for information directions of distributed integrated infocommunication systems of the departmental purpose (ID DI ICS MP), it becomes necessary to make an informed choice of their characteristics. The resource management method of the ID DI ICS MP maskirators refers to ensuring the security of the ID DI ICS MP, and is used to achieve the required nominal power of the ID maskirator, which is achieved by justifying the choice of the number of IDs and the rate of change of IP-addresses when average rate of generation of information packets by the correspondent varies.
Keywords: Information technologies, distributed integrated infocommunication systems, masking of the information directions, threats to functioning, information exchange.
In this article, the evaluation of the effect of the trace elements on the reliability of the design of the combinational circuit in the field-programmable gate array (FPGA) basis is researched. An evaluation of the reliability of combinational circuits in the basis of three-input FPGA cells, as well as three-input FPGA cells, taking into account the trace elements, is given. Proposed methods for evaluate the reliability of the project at various stages of the development of fault-tolerance projects in the FPGA basis. The use of these methods allows the design of combinational circuits of increased reliability in the basis of reconfigurable integrated circuits without built-in reliability features.
Keywords: reliability, evaluation fault tolerance, combinational circuit, FPGA, fault injection
The article deals with the task of dealing with the opportunistic behavior of the supervisor and agents in the river water quality control system. A two-level hierarchical model is built, including a supervisor (master) and agents (slaves). Each of the subjects seeks to maximize their objective function. In the model, the principal is implicitly present, fighting against the opportunistic behavior of the supervisor and agents. As the method of control used the method of inducement. The behavior of the system is investigated in the case of Shtakelberg’s information regulations. The algorithm for finding the Stackelberg equilibrium is indicated. The results of model simulation under various initial conditions are demonstrated. An analysis of the results is provided.
Keywords: Shtakelberg equilibrium, two-level system, prompting, imitation, opportunistic behavior, river water quality, hierarchy
In this paper, a numerical study of the optimized body shape with minimal aerodynamic drag has been carried out. A computational experiment involves the transition from the study of a real object to the study of its mathematical model, for the study of such processes, a full-scale study of which is impossible, for some reason is difficult or expensive. The conditions for comparing the forms of bodies in a computational experiment are that they are kept constant for all bodies: the volume and shape of the working area; distances from sources, drains and centers of bodies; gas flow rates; body mass and other secondary characteristics besides just the very shape of the surface.
Keywords: aerodynamic resistance, optimized body shape, numerical simulation, computational experiment, temperature field, convective heat transfer
The article deals with the results of the practical implementation of the method of milling deep grooves of the turbine rotor.
Keywords: Turning, milling, disk milling, deep grooves
The article is devoted to the close studying of heat transfer and hardening of the ingot in the secondary cooling zone (further SCZ) in the continuous casting machine (further CCM), and also determining a stress-strain state of the ingot including continuously varying temperature field inside it in order to prevent the process of buckling the ingot by setting rollers in the center of the largest displacements and deformations and as a consequence of reducing the length of the roller section. This aim is achieved through the development of methods of calculation of the stress-strain state of the ingot in a CCM with a help of the temperature object decision, correct selection of the approximation model of the experimental data and the selection of finite element-based on the Lagrangian description of motion of a continuous medium and comparison the calculation results for multiple selected sections.
Keywords: continuous casting machine, ingot, hardening in the secondary cooling zone, rollers, heat-exchange
The construction of mathematical models of technical objects is most often associated with the mathematical processing of experimental data. Due to significant non-linearities, approximation of such dependencies using known methods (polynomial expansions, spline approximation, etc.) is, firstly, difficult, and, secondly, is associated with large errors. Studies have been conducted to create and substantiate an alternative to the existing “Cut-Glue” method of approximation (CGA).In the CGA problem, there are three subtasks: fragmentation, approximation, and multiplicatively additive processing of the results of the first two subtasks. The initial subtask is data fragmentation. It is a preparatory stage for the subsequent stages of the implementation of the Cut-Glue approximation method.The method of its solution is based on logical-combinatorial features and conditions for partitioning multidimensional data. It allows you to consider the maximum possible number of various solutions when searching for the best.The CGA method implements a fundamentally new approach and is designed to solve the problems of experimental description of nonlinear dependencies. To implement the CGA method, the software package ""Algorithmic structure and functionality of the"" CutGlueApproximation ""software complex was developed. The article describes the nature and capabilities of the functional implemented in software tool ST. ST can be used as part of the entire software package (SP) or independently to perform intermediate tasks in isolation from the entire complex. The connection between the parts is realized with the help of auxiliary libraries, which allow both to use input data and to present the resulting data in various forms, which makes the SP more flexible. A convenient user interface contains many variable parameters for flexible configuration and convenient structured information output at all stages. With the help of the developed ST, many demonstration experiments have been carried out.
Keywords: Approximation, optimization, mathematical model, combinatorics, heuristic algorithms, modeling, software complex, fragmentation
The article presents materials on the creation of Parking management AIS. The results of simulation modeling, which allowed to identify the "bottlenecks" of the project. Design diagrams have been corrected, processes have been included to optimize the operation of the Parking lot. The user interface is shown, the prospects of the system development are outlined.
Keywords: modeling, implementation,information system, IP design, Queuing system, diagram, Parking
the paper is focused on the latest advancements in the field of quantum computation. The aim of the paper is to point out the main problems arising in the process of developing a computer based on quantum computation. In addition, the paper covers what has already been done to solve these problems. Furthermore, various aplications of quamtum computation are covered, for example, the use of quantum computation in artificial intelligence and search.
Keywords: qunatum physics, quantum computation, quantum computer, quantum programming, quantum theory, artificial intelligence, quantum search, quantum circuit, qubit, quantum algorithm, Turing Machine
The paper considers the bioreactor for cultivation of Chlorella microalgae. The indicators of the process quality and the description of the bioreactor design are given. The computation of the transfer function of the system to maintain the temperature of water in the main tank by the method of Rotach is calculated
Keywords: automation, bioreactor, biotechnology, Chlorella, system of regulation, transfer function calculation, Rotach method
The results of a numerical experiment that obtained with using of the developed mathematical model of the operation of the power supply system of the greenhouse are presented. The list of input factors of the model included external factors: ambient temperature, length of daylight hours, wind speed, insolation, and factors that characterize the internal working conditions of the greenhouse.The values of external factors varied within the average daily values for the location of the greenhouse, the process parameters were determined taking into account the possible modes of operation of the greenhouse. The dependences between the amount of thermal energy consumed by the greenhouse, the energy consumption of the energy supply system, the gross energy consumption of the energy supply system, the utilization rate of gross energy and the levels of factors are shown. The results of the analysis of the obtained dependencies are presented.
Keywords: modeling, power supply system, greenhouse
The outlines of the composition of intelligent models for the assessment of complex risks, consisting of a ways of extracting and formalizing knowledge based on an ontological model, intelligent models for evaluating the process, structural and system aspects of risks are determined. A method of forming a composition of models for the assessment of complex risks, based on the decomposition of the problem of risk assessment into separate requirements, is proposed. The boundaries of the participation of subject matter specialists and / or risk management specialists in setting up, training, adapting and assembling both individual intellectual models and their composition as a whole are determined.
Keywords: intelligent models, risk management, intelligent model composition, ontological model
The article is devoted to the development of an effective model of interaction between the main participants of the regional labor market: the system of vocational education, the leading employers of the region and regional Executive authorities. The proposed structural and functional model includes a management system based on regional Executive authorities, a system for forecasting the needs of employers in key sectors of the region's economy, a system for assessing the quality of graduates ' competencies and educational programs, a system for monitoring the employment of graduates, a training system and a funding mechanism for the vocational education system, as well as a career-oriented Internet portal for informing the population about the future needs of the economy in the workforce. Using the proposed model of modernization will allow to bring into line the issue of the vocational education system to the needs of the regional economy, increase the level of employment of graduates and thereby increase the effectiveness of functioning of regional system of vocational education.
Keywords: vocational education, effectiveness of functioning, modernization, model, needs of employers, labor market
Two basic approaches to designing architectures used in the United States and the European Union are considered. The role of the architecture design stage in the development of projects for intelligent transport systems has been determined. Prospective development directions for design methods of architectures of this type have been identified
Keywords: Architecture, intelligent transport systems, subsystems, functional and physical architecture, services
The article is devoted to the problem of planning the trajectory of an unmanned vehicle-electric vehicle. The results of the development, software implementation and research of the algorithm for constructing the optimal trajectory of the unmanned vehicle in a well-known environment - part of the urban environment are presented. As a basis, a fast-growing random tree (RRT) algorithm was used to construct a path between two points. At the same time, it was optimized regarding the algorithm for removing unnecessary vertices in order to build the optimal trajectory as well as taking into account the vehicle’s kinematic constraints using the Dubins curves on the turning radius of a transport electric vehicle for entering turns. As input data, a binarized map of the city’s terrain was used, as well as set coordinates of the starting and ending position of the vehicle. Research is also conducted on the speed of calculating the RRT method, depending on the system power.
Keywords: unmanned vehicles, electric vehicles, motion planning methods, sampling methods, RRT algorithm, Dubins curves
The system analysis of types of damage of logging machines and their damage during operation is carried out. It is found that a significant impact on the machines reliability has mechanical energy and thermal energy. Mechanical energy affects all components and parts in the form of static and dynamic loads, which leads to the wear of mates, the emergence and development of fatigue cracks, plastic deformation or quasi-brittle fracture. The main attention is paid to the consideration of the influence of low temperatures in the operation of forest machines in winter on the properties of metals and, consequently, on the level of their reliability. It is recommended to use more widely such characteristic of materials as fracture toughness to assess the reliability of the design.
Keywords: Logging machine, reliability, damage, operating conditions, low temperature, fracture toughness
In this paper, an analysis of the problems and tasks arising from the design of situational awareness tools has been carried out. As a result, it has been established that the approaches in this area do not satisfy the requirements for modern intelligent tools for operational decision support for the reasons for the lack of methods and tools reflecting the dynamics of information processes and a distributed information processing architecture with weakly structured properties. The methods of operating and extracting knowledge from semistructured dynamic information are proposed.
Keywords: Situational awareness, poorly structured data, temporal information, dynamic structures, intellectual analysis
Article is devoted to process of development a simulation model of satisfaction with work employees in the organization. In article influence of various factors on satisfaction with work of the worker is considered. The basis of this work was formed by theoretical approaches to the organizational conflicts and motivation of personnel of foreign and domestic researchers. A simulation model of job satisfaction is based on the paradigm of system dynamics. Process of simulation of model allows to show visually under the influence of what factors there is a transition of conditions of workers from "satisfied" in "unsatisfied" / "conflicting " and back.
Keywords: conflict, organization, simulation modeling, advanced training, job satisfaction, factors, system dynamics
This study examines the dynamics of the perception of individual segments of the advocacy news. A probabilistic-stochastic approach for simulation is proposed. As the main actor describing the situation, the probability of a positive assessment of the veracity of the new information by a separate subject is taken. For the description of the process of forming the relation to it the discrete-event paradigm is chosen. The change in the level of evaluation occurs under the influence of random perturbations of the individual's opinion, experienced at discrete moments of time. An intuitive recalculation after this perception of the news is modeled based on Bayes ' theory of decision making. Mathematically, this approach fully coincides with the previously used by us in the numerical analysis of the resolution of intrapersonal conflicts. The results revealed at that time were adapted to study the dynamics of the perception of propaganda news by a neutral part of the population. Which is made by the individuals estimating truthfulness of propaganda activity as a whole neutrally, at the level of ½ (on a scale from 0 to +1). It is found that when assessing specific news such neutrality is violated, in the end, the individual believes the news is either completely true or false. But it is already being restored at the level of the ensemble of all news. About half of them are considered by the individual to be true, half – false. The time before the formation of the final perception of a particular news depends on the degree of its importance for the subject, and the minimum is observed at the level of significance slightly below the maximum. The model of taking into account the social environment in the resolution of intrapersonal conflicts has also been adapted for the analysis of the perception of propaganda information. While the assessments of the credibility of the individual stories of neighbors are correlated. Over time, clusters with the same perception are formed in society. Ideally, in the absence of other influences, eventually one opinion is formed in the whole study group. Here again, for some propaganda news, the neutrality of perception is broken, but it is restored at the level of the ensemble of all news. The proposed models can be used to study not only the neutral part of the population, but also groups with any level of assessment of the truthfulness of propaganda in General, both homogeneous and heterogeneous in this parameter. In addition, the proposed approach can serve as a basis for the study of the impact of agents of influence (in the information space) and the development of advocacy strategies.
Keywords: propaganda, perception, in General, separate news, modeling, probabilistic-stochastic approach, discrete-event approximation, Bayesian theory, multi-agent analysis, social environment, clustering
The current state of the issue of the nomenclature of centrifuged thin-walled prefabricated reinforced concrete products of the ring configuration is analyzed. The scientific interest, which is represented by the technology of fiber reinforcement for such concretes, is grounded. The actual problems for concretes produced by the centrifugation method are indicated. A series of large-scale experimental studies has been carried out to establish the nature of the change in the properties of heavy concrete manufactured by various methods, depending on the reinforcement by different types of dispersed fibers. To systematize the accumulated experimental data, at the first stage of the investigation, products of low-strength concrete, class B20, manufactured by vibration and centrifugation, were molded and investigated, followed by a reduction to uniformity. The compressive strength and tensile strength, as well as their increments, depending on the type of reinforcing fiber-polypropylene, basalt or steel fiber, were studied. The effect on the properties of the investigated concrete of the B20 class is determined by the combination of various prescription and technological factors.
Keywords: centrifuged concrete, vibrated concrete, thin-walled reinforced concrete products, fiber reinforcement, polypropylene fiber, basalt fiber, steel fiber, compressive strength, tensile strength
The scientific interest, which is represented by research for concretes differing in strength characteristics, is substantiated. A series of large-scale experimental studies has been carried out to establish the nature of the change in the properties of heavy concrete manufactured by various methods, depending on the reinforcement by different types of dispersed fibers. At this stage of the study, in order to systematize the accumulated experimental data, the authors molded and examined products made of concrete of class B35, manufactured by vibration and centrifugation, with subsequent reduction to uniformity for the convenience of an analytical comparison of the results obtained. The compressive strength and tensile strength, as well as their increments, depending on the type of reinforcing fiber-polypropylene, basalt or steel fiber, were studied. The influence on the properties of the investigated concrete of class B35 on the combination of various prescription and technological factors has been established.
Keywords: centrifuged concrete, vibrated concrete, thin-walled reinforced concrete products, fiber reinforcement, polypropylene fiber, basalt fiber, steel fiber, compressive strength, tensile strength
The dependence of the values characterizing the propagation of nonlinear waves on the surface of a liquid conductor on the electric field strength and on the wavelength is described. Electrohydrodynamic waves are investigated, namely, the motion of drops, convective motion of liquid, deformation of drops and bubbles in the applied electric field, propagation of surface waves in a linear approximation are considered. A mathematical model of nonlinear wave propagation on the charged surface of a liquid conductor is constructed. The graphs of the dependence of the wave oscillation frequency on the electric field strength and phase velocity on the wavelength are plotted.
Keywords: nonlinear surface waves, liquid conductor, dielectric constant, phase velocity, magnetic field strength, surface charge
This article analyzes the stress-strain state of exploited reinforced concrete crane beams in order to identify the causes of abnormal damages. Also, the degree of influence of the revealed damages on safety and operational fitness was assessed.
Keywords: crane beam, technical condition, operational availability, defect, durability, damage, inspection, discretization, stress-strain state
The simulation variances of the final volume considerably simplifies the solution of certain problems of reliability. The collection of information for aggregates of large volumes is impractical because of the duration and high cost. Therefore, the analysis and calculation are subjected to a representative sample. To move from sample data to finite volume population parameters, an analytical method for determining the Weibull parameters for the population was used. Analysis of the analytical method for determining the parameters of the three-parameter Weibull distribution for the aggregate confirmed the possibility of using the method of modeling statistical data of strength and life of parts and components of machines. The calculations proved that in practice it is possible to use both the value of the shift parameter and the value of the extreme terms of a number of the population.
Keywords: reliability, analytical method, simulation, General population of finite volume, the sample, the Weibull law, strength, resource, detail, Assembly, machine