The authors of the article examine the problem of electrothermal degradation of fiber optical communication lines arranged on the high-voltage power lines pylons. The possible methods of reduction of high-voltage line electric field influence on fiber optical communication lines were studied. There is also the method of possible calculation and choice of optimal suspension place for fiber optical cable on a high-voltage line pylon. This method can be applied for one of the high-voltage line masses disposition cases.

Keywords: electromagnetic field, thermal-electric degradation, fiber-optical communication lines, high-voltage power lines

The problem of manufacturing technology heterostructures pezofaza - metal considered in the article. Complexity consists in the fact that during the removal of the polymer in the system at low temperatures are formed porous layers, formed powders separated metal layers, having island macrostructure. One way to solve the problem - reducing the firing temperature heterostructures. Proposed to decrease the sintering temperature by using of functionally active glass-phases. Reducing the sintering temperature of products also allows to replace platinum electrodes inexpensive silver-based alloys. Obtained by solid state reaction method of piezoceramic material has a low sintering temperature (980 ° C) and high electrical parameters. Found that not only the proportion of the vitreous mass, but also their qualitative influence on the properties of piezomaterials    

Keywords: heterostructure glass phase, the sintering temperature, porosity, ferroelectric phase

An overview of research related to the tasks of processing and filtering of signals. Signal is considered as a random process defined by probabilistic characteristics. This article addresses the issues of the history of the development of methods of signal filtering. Recent scientific publications in which the results and the main directions of research in the field of signal processing and filtering are analyzed. Presented material extends the current state of knowledge about the problem.

Keywords: signal, signal filtering, signal processing, stochastic process

Consensus problem involves a system of processes, some of which may be faulty. A fundamental problem of fault-tolerant distributed computing is for the reliable processes to reach a agreement on a same decision. One approach to achieving such agreement is for processes to vote and agree on the majority value. In the absence of faults, this works fine, but the vote even one faulty process can swing the outcome. In this paper we present some result of analysis of a mixed-failure model, where t processes may fail, b out of which is the Byzantine failures and remaining c is crash processes. In a asynchronous model of computation for several distributed problems it turns out that a collection of N processes can tolerate c crash failures if 2c < N, while robustness against b Byzantine failures requires 3b < N. Our algorithm rely on a weak definition of the Byzantine failures which disallows them act as a dead or a crash processes and can tolerate the 2(N – 2c)/3 failures.

Keywords: fault tolerance, distributed algorithms, asynchronous networks, byzantine failures

The algorithm of a problem about transfer in a higher educational institution by results of Uniform Graduation Examination in view of various groups of introductory tests, priorities of receipt on a speciality,  the minimal lowest passing scores in subjects of groups of introductory tests and estimated figures of reception in high school is considered. The algorithm is realized on the basis of database Mirosoft Excel and programming language Visual Basic for Applications.

Keywords: group of introductory tests, the candidate of transfer on a speciality, the applicant of transfer for a speciality

  The article is devoted to the problem of the research of geopolitical processes on the world regions’ scale under present-day conditions. The article substantiates the necessity of their analysis with the help of the cognitive approach as an effective means of cognition of the interconnections and interrelationships within the complicated systems. With that aim in view the specifics and the stages of the cognitive modeling are given thorough analysis in the article. This type of modeling is adapted to the analysis of geopolitical dynamics on the regional/sub regional level taking into consideration its aptitudes to make prognostic scenarios of the development of the situation. The possibilities of the cognitive modeling of geopolitical processes are illustrated on the example of the situation in three sub regions constituting one (big) the Black Sea – Caspian region.

Keywords: World regions, geopolitical processes, modeling of the complicated systems, modeling of the geopolitical processes, cognitive modeling, the program’s system of the cognitive modeling, the Black Sea – Caspian Region, the Black Sea sub region, the Caucasus

The methodology, language and tools for rapid development of logic models of systems and processes are proposed. Language is defined in the first-order predicate calculus with equality and a representation of negatives, modules, discrete time intervals. The proposed computable mathematical semantics allows to construct interpreters whose complexity is O(nlogn) relative to the power of models. Interpretations result is a model derivated from the logical specification of objects by direct inference. The model can be used as a working prototype of the system. The technology is designed to address a wide range of problems of language analysis, projects, processes, development of training and expert systems.

Keywords: logical model, predicate calculus, logical mistakes, logical semantics, analysis, interpreter

Labour market is a complicated social and economic system, which requires the necessity to consider a number of characteristic properties (stochasticity,nonlinearity,inertance,nonstationarity) for investigation and modelling labor market processes and phenomena. In this article the problem of optimum control of a labour market is mathematically formalized. This allows for regional system of a labor market to reach desirable indicators, namely the set unemployment rate.

Keywords: Labor market, optimum control, optimizing tasks, principle of a maximum of Pontryagin, social and economic system

The paper was presented one of the major classification schemes of software reliability models. Consider other possible classification scheme, their relationship and interconnectivity. Studied most frequent methods and factors of software reliability. Shows the formula for calculating the reliability of some models.

Keywords: software reliability models, classification models of software reliability, software reliability factors, the formula for calculating the reliability of software

"Current economic problems in the sphere of human environmental organization led to the birth of synthetic science - architectural ecology. Task of energy efficiency and alternative energy sources use in the condition of ecological balance of environment created demand for energy-efficient building design. The search of new approaches and energy-efficient technologies proceeds in two mutually compatible directions: energy-efficient and energy-active homes. Complex approach to the ecological and energy problems solution considering all direction differences. architecture, energy-efficient buildings, energy efficiency, energy-efficient technologies, energy-efficient homes, energy-active homes. "

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

Information about authors of issue №4 p.2 (2012)

Keywords: authors

In this paper, the task of achieving the optimal bandwidth telecommunication channels. Focuses on technical aspects of managing bandwidth channels using virtual organization switched channels. Formally defined parameters affecting the guaranteed delivery service. A model and management solution parameters guaranteed delivery of information in the communication channels, based on the methods of the theory of stochastic processes theory and risk analysis.
Keywords: reliability of telecommunication systems, telecommunication systems modeling, stochastic processes, optimal risk management.

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This article discusses a method for calculating the combined diagnostic feature called spectral signature, based on the use of mathematical apparatus Walsh transformations for logic functions and differential logical calculus. We consider a class of devices which can be implemented in the proposed method. A method for determining the spectral signatures for discrete devices differs from the known methods of diagnosis less computational complexity and allows the implementation of a self-test in the operation of devices.
Keywords: spectral testing, signature analysis, technical diagnostics, information and control systems.

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Information about authors of issue №1 (2012)

Keywords: authors