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  • Investigation of partial backup options in the design of fault-tolerant logic blocks in FPGAs

    In this article, we propose methods for designing fault-tolerant structures for Field Programmable Gate Arrays (FPGAs) by forming an internal structure of macro cells (LUTs), with the possibility of correcting single reversible faults in the circuit’s gates. To improve fault tolerance, the failure tolerance of a typical macro cell was assessed, the most vulnerable areas were identified and the most vulnerable parts of the macrocell were protected by means of triple modular redundancy methods. Depending on the expansion of the protected area, various versions of the built-in redundancy were obtained, and various options for minimizing the built-in redundancy were proposed. Experimental work was carried out to form fault-tolerant ISCAS'85 combinational circuit designs in the basis of fault-tolerant FPGAs.

    Keywords: combinational circuit, FPGA, field-programmable gate array, LUT, logic synthesis, increase fault tolerant, computer-aided design (CAD), fault injection, single event transient

  • The dependence of the relaxation properties of down from the temperature

    The article presents a systematic analysis of the habitat of waterfowl eider ducks, goose, geese and ducks, whose down is used in the production of thermal protective clothing and equipment. On the basis of the analysis, the hypothesis that the difference of the elastic properties of feather mass Northern species birds eider ducks and geese from domestic birds living in relatively comfortable temperatures. The method of experiment to determine the relaxation properties of textiles in a cylindrical cell. Conducted study of the relaxation properties of down masses of different types of birds depending on the temperature, which showed higher relaxation down masses of eider ducks and geese at low temperatures. A large mass of down, the diameter and shape of the barbs and tendrils, the number of tertiary structures indicate that the eiderdown has to be extremely elastic and resistant to stress. The results of experimental studies on the rheological properties of the feather down raw materials of water birds. Levels of regenerative abilities on the initial thickness of textile cells filled with fluff, recommendations on the use of down-feather mixtures in thermal protective clothing in various price categories.

    Keywords: Key words: feather down insulation, thermal protective clothing, textile cell, filling the capacity of the fluff, the rheological properties of down, the relaxation properties of down, loading-unloading, aeration

  • Development of methods of digital processing of field and laboratory research of water-dissolved gases.

    In the article the technique of data processing of field and laboratory research of water-dissolved gases, osnovna on the use of the developed software and databases

    Keywords: Water-soluble gases, software package, database, data processing

  • Calculation of the wedge-shaped support (slider, guide) using micropolar fluid lubricant

    The presented work is devoted to mathematical model operation of the clinoid support (a slider, a guide) working on micropolar fluid lubricant in the turbulent mode of a sliding friction taking into account dependence of viscous characteristics of mikroprolyarny lubricant on temperature and pressure. We consider for a case of ""lamina"" a set of equations of driving of thick incompressible liquid of micropolar lubricant taking into account dependence of viscous characteristics of mikroprolyarny lubricant on temperature and pressure, an equation of continuity and a formula of speed of a dissipation of energy for definition of the function Ф (х) caused by a melt of a surface of a basic ring. The main performance characteristics of the considered couple of sliding friction are as a result defined. Influence of parameter which is caused by a guide melt and also dependence of structural and viscous parameters of micropolar fluid lubricant on temperature and pressure upon a carrying capacity and a frictional force is estimated.

    Keywords: hydrodynamics, a sliding support (a slider, a guide), viscid incompressible fluid micropolar lubricant, the melted guide surface, dependence of viscosity of lubricant on pressure and temperature

  • Development of the design model of a radial slide bearing lubricated by a melt

    In the paper, on the basis of the equation of motion of an incompressible lubricant having the micro-polar properties for the case of a ""thin layer"", the equation of continuity, Darcy and the formula for the energy dissipation rate for determining the function Ф (θ), caused by the molten surface of the bearing bush covered with a low-melting metallic melt of a carrier asymptotic solution by the thermal parameter K. Using a self-similar solution for the zeroth approximation, i.e. without taking into account the melt of the low-melting metallic melt, and for the first approximation, taking into account the low-melting metallic melt, the velocity and pressure fields in the lubricating and porous layers are determined, and the basic performance characteristics of the radial slide bearing are determined. The characteristic permeability of the porous layer and the melt of the surface of the bearing bush, coated with a low-melting metallic melt, on the load capacity and frictional force are estimated.

    Keywords: low-melting metallic melt, porous layer permeability, lubricant with micro-polar properties, sliding bearing

  • Diagnostics of a malfunction on appearance of brake колодок the car

    Тhe article deals with the malfunctions of the vehicle's brake system, resulting in uneven wear of the brake pads. Illustrations of damaged pads are given. Recommendations for troubleshooting are given.

    Keywords: car, brake system, brake shoe, wear pads, malfunction

  • Diagnosis of the technical condition of the anti-lock braking system of a car

    In the article questions of diagnosing of a technical condition of antiblocking system (ABS) of brakes of the car are considered. The main types of faults and the causes of their occurrence are outlined. Recommendations are given to drivers for the prevention of damages or failures of ABS

    Keywords: car, anti-lock braking system, diagnostics, stand, malfunction, failure

  • Methods of multicriteria optimization of transport problem

    The article is devoted to the development of a multicriteria transport problem solution. As criteria, the minimal cost of transportation, the minimal time of transportation, the minimal overhead charges and the maximal volume of transportations were taken. Classical methods for solving multicriteria optimization problems are modified and adapted to the transport problem specification. In Visual Studio C # programming language, is used as a software package to solve the multicriteria transport task problem by one of the methods of linear convolution, or the main criterion, or compromise method or the method of guaranteed result and to compare the results obtained. The first paragraph is devoted to the formulation and mathematical model design of four-criterial transport problem. The second paragraph contains an example the application of guaranteed result method to solve transport problem. The next paragraph describes the program realization of transport problem with four criteria.

    Keywords: four-criterial transport problem, method of potentials, initial symplex table, main criterium method, compromise method, lambda-problem, liniar convolutuin method, transporat carriages, program realization, multiplicative convolution, guaranteed result me

  • Approaches to the development of the intelligent control system of mobile robot

    The article deals with the application of methods of artificial intelligence to control robots. The concept of a layered intelligent control system for mobile robots, in which proposed to build an intelligent control system of three levels, based on patterns of thinking and categorizing tasks according to the level information is presented. In the circuit of the proposed system circulating upwards and downwards flows, the management of the system at their level, and some of the information is summarized and passed to the higher level of environmental assessment, then, as a result of detail gradually from the strategy behavior to the commands of the executive bodies of the robot are driving down when selecting the solution for travel or other any actions of a mobile robot. The functional-structural diagram of the system and the design principles and hardware implementation of this system on the basis of the mobile robot multilevel computing system are given.

    Keywords: artificial intelligence, new information technology, mobile robot, intelligent robot, intelligent control system, the concept of tiered computing system

  • Methods for increasing the efficiency of an automated system of operational control in railway transport

    Set out the main stages of development of the automated system of operational control in railway transport, the issue of the effectiveness of this system. Describes methods to improve efficiency, a model of the processing of information flows

    Keywords: automated system of operational control in railway transport, road-network database, a table of the current status information message, the transport system, thematic table, efficiency, rail transport

  • Review of ways of welding of elements of bodies of cars

    The review of ways of welding of elements of bodies of cars is carried out. Merits and demerits of spot contact welding and a way of welding with use of the high-concentrated power sources are considered. The processes which are taking place in a zone of a welded seam when using laser welding are in details considered.

    Keywords: metal welding, welded seam, laser welding

  • Investigation of the single-point crossover apply in the inhomogeneous minimax problem solving

    In the article is considered the minimax problem solving. This is a characteristic problem of the schedules theory. As a possible method for solving this problem, a modified Goldberg model is considered, which is one of the varieties of genetic algorithms. The efficiency of this model is described on the results accuracy estimate, obtained by using a standard crossover for various types of mutations and parameters of the genetic algorithm.

    Keywords: single-point crossover, genetic algorithm, modified Goldberg model, mutation, minimax problem, scheduling theory, elite individual, individual, generation

  • A survey of passenger correspondence in Sochi

    The task of this work is a survey of passenger correspondence, a traffic intensity survey ,a passenger traffic survey of the road net on the example of Sochi. Used methods: passenger correspondence polling by questionnaire, statistical analysis for the array of correspondence processing, observation, registration and analysis of traffic and passenger intensity.

    Keywords: passenger correspondence, traffic, public transport, passenger traffic

  • Mathematical model of the working process of a steam power plant for obtaining heat and electric energy.

    The article discusses the development of a mathematical model in the deterministic form of recording the main dependences that determine the process of vaporization in a steam power plant to produce heat and electricity when used as a source of biofuel energy. Theoretically, the parameters of the working process of the installation were calculated; thermal efficiency of the turbine; heat useful used in the boiler unit; the efficiency of the boiler; the percentage of heat loss with exhaust gases; the estimated hourly consumption of solid biofuel; the annual amount of heat obtained by burning the mass of crop residues; the theoretical combustion temperature of crop residues; the actual steam velocity in the Laval nozzle; the heat loss in the nozzle, etc.in the course of calculations with the help of a multi-factor experiment, the parameters and the shape of the turbine blade used in the installation were obtained. Using the presented mathematical model given in the article and the data of the Federal state statistics service, we obtain the numerical values of the working process of the installation working on biofuel. For convenience, all the summary theoretical data of the numerical values of the basic theoretical dependences of the mathematical model of the working process of the layout of the steam power plant for heat and electricity was included in the table. Thus, theoretical studies show the possibility of producing electricity of the required quality using straw to produce high-pressure steam.

    Keywords: mathematical model the working process of the pressure volume, a steam turbine,producing heat and electric energy, biofuels

  • Arrangement of the tractor for processing of power wood in the conditions of logging

    In the work described and the criteria of layout of self-propelled forestry tractors, processing equipment(crane, chipper), mounting structure, capacity of mobile chippers. The system analysis on the choice of optimum arrangement is carried out.

    Keywords: logging self-propelled tractor, hydraulic manipulator, chopping machine, system analysis

  • Modernization of buildings and structures as a way to restore the housing stock of the Russian Federation

    This article provides information about the state of the housing stock of the Russian Federation, provides statistical evidence, and the reasons for the current state of residential buildings and structures. The influence of modernization on the preservation and restoration of the housing stock of the Russian Federation is indicated, its expediency and main types of works are given, the results of modernization are presented

    Keywords: housing stock, housing problems, modernization, operational parameter, the desirability of modernization, depreciation of the building, main types of works, replacement of equipment, add-in floors, changing the geometry of the premises

  • A various neighborhood search with Bayesian rounding technique for Satisfiability problem

    The article reports about approximation algorithm for Integer Factoriation Problem (IFP) using reduction to optimizing case of SAT problem with 3 literals per clause (MAX-3SAT). A continuous functional that equivivalent MAX-3SAT is builded and solved by simple iteration method with variable neighboordood search and Bayesian rounding. It shown that global minimum of the functional cannot be reached in almost samples because local extremums but arguments of ones can be compared with the exact solution. The experiments show that the developed gybrid algorithm improves earlier version developed by authors. Also this method is analyzed by quantum channels defense In systems of quantum key distribution. A typical structure of one is described.

    Keywords: Integer Factorization Problem, an optimzed version of SAT problem (MAX-3SAT), various neighboorhood search, continuous functional of MAX-3SAT representation, quantum key distribution

  • Ensuring the quality and competitiveness of services

    In modern market conditions, the consumer acts as an arbiter, therefore it is unacceptable not to take into account the client's satisfaction factor. In this regard, one of the basic principles of quality management is customer orientation. In a strategic sense, customer orientation improves the performance and competitiveness of the organization; provides aggregate quality management services, analysis of customer needs, positive profit dynamics, augmenting book value, finding new customers. One of the modern approaches to assessing the quality (competitiveness) of services is the use of the SERVQUAL methodology. The paper presents the results of the analysis of the quality of the services provided for maintenance and calibration of measuring instruments by the example of LLC "RMC".

    Keywords: service, quality criteria, evaluation of importance, Likert scale

  • Information technology to ensure freight

    Discusses the development of information technology in providing freight transport. Elements of modern technology that increases the efficiency of transportation. Introduction in the production process of automated information systems. Achieve full economic transparency and investment attractiveness of the organization. The process of implementation of information technologies needed today, and what's more, inevitable, due to the increase in volumes subject to data processing. The use of such information technologies will allow the shipping company to interact with various types of technical and software components of information systems, as well as give the possibility to eliminate the intermediate links through the integration of information flows, the globalization of logistics systems.

    Keywords: production, enterprise, transport, efficiency, information system, automation, transport technology, transportation, Internet, modern appliances

  • The method of using the basic equation of passive location in the calculation of coverage areas on protected objects of information

    Passive detection sensors are widely spread in engineering-technical systems of information protection. During designing such systems, it may be difficult to calculate the coverage areas of infrared detectors. This is due to the fact that the problem of establishing a relationship between the theory of statistical detection and the choice of parameters for the equation of the maximum detection range is not considered in detail. In this regard, the task was to develop a method for applying the basic equation of passive location to calculate the coverage areas of infrared detectors. The calculation method is developed on the basis of the equation of the maximum range of the passive receiver. The study considered three models of the signal-to-noise ratio: a signal against a white noise background with fully known signal-to-noise parameters; detection of a signal whose phase and amplitude are unknown; and detection of a random signal against a noise background. As a result of the research, the conditions under which the passive signal detection formulas on the background of noise give correct results were found. Thus, the connection of the statistical theory of detection with the equation of the range of the passive emitter was established.

    Keywords: information security, infrared detector, passive location, engineering and technical protection, the pyroelectric element

  • Mathematical model of fuzzy control portal car wash

    In the article on the basis of the analysis the basic technical and organizational actions are defined that allowed to carry out statement of a task on improvement of system of management of technological process of portal car wash. A mathematical model of fuzzy car wash control is developed due to the program control of water supply depending on the shape, geometry and degree of pollution of the car, in order to reduce water consumption and improve the energy efficiency of the portal car wash. Mamdani algorithm is proposed as fuzzy inference algorithm, which is easily implemented in MATLAB software product on the basis of knowledge and experience of experts, as well as modeling of the operator. Formalization of the description of water supply level, shape, size and degree of pollution of the car is carried out by means of linguistic variables, their type and description of elements of thermal sets of these variables is given. The proposed mathematical model can be used in the design of control systems and other types of automatic car washes.

    Keywords: car wash, mathematical model, fuzzy control, fuzzy inference algorithm, linguistic variable, term-set of linguistic variable, basic set

  • Shock interaction of the links of the mechanism of the cable cutting machine

    The shock interaction of the links of the mechanism of the cable trimming machine on the example of the model of "oblique" impacts is considered in the article, when shock impulses arise between the links not only along the impact line, but also in a tangent to the colliding surfaces of the plane. It is shown that the resulting significant pulses between colliding elements contribute to the creation of wave processes in long bodies. Such processes, due to their transfer to the tubular bodies of the spindles, give rise to acoustic fields

    Keywords: noise generation, vibroacoustics, vibration damping, noise control, noise emission

  • Data analysis automation in experimantal research

    The purpose of the ongoing research work is to create a platform for automated data processing, that provides the user with a coherent textual report with the results of the analysis. The results of the first stage of the work are: the development of a system of meta-data properties, the development and implementation of an algorithm for obtaining meta-properties from the user, writing code for the application of basic statistical methods in R, constructing an algorithm for automatic analysis based on meta-properties and its software implementation. The results of the second stage of the work are: testing and updating of platform algorithms, investigation of text generation methods, development of a system of multivariate templates for interpretation of results, and development and implementation of algorithms for forming a coherent textual report with data analysis results. Based on the recommendations of data analysis report formatting (GCP and others), templates for interpreting the results for each statistical method have been developed. Possible combinations of properties of initial data and results are analyzed and template variants for each scenario are created. All the developed algorithms (4 tasks, 6 modules) are launched on the platform (online service online.statzilla.ru).

    Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

  • Modern corporate information systems and corporate information portals

    The article describes the concept of corporate information portal, its types and classification. The main features of both Internet portals and corporate portal are described. The concept of corporate information system is considered both in the classical version and under the enterprise concept of Enterprise 2.0. The problem of use of ideas of social networks in corporate information systems is presented.

    Keywords: portal, information technologies, corporate information technologies, social networks, Enterprise 2.0.

  • Back up data using cloud services when managing data on networks

    The article describes the possibilities of data backup with the help of cloud services in data management in networks. It also describes how to create backups, how to verify the integrity of files in a backup, and how to ensure the reliability of the copies themselves. The formulation of the problem is formulated as follows: it is necessary to find the best way to store backup data ensuring the best safety of these data at the lowest cost and reduce the complexity of the backup. As optimization criterion in this study was considered work on backup software, data storage reliability, the integrity of the files in the backup, the financial costs for providing backup. Analysis of the results of the study showed that the storage of backups in the cloud compared to traditional methods of backup - more profitable in many aspects. In modern data centers due to the large scale of the level of reliability of data storage is much higher, the cost of disk space does not vary significantly with the cost of purchasing hard disk and automatic backup check allows you to save a lot of time.

    Keywords: Backup, backup, cloud technologies