№ 115(1), January, 2016
Public date: 27.01.2016
Archive of journal: Articles count 86, 182 kb
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NON-PARAMETRIC CYCLES ESTIMATORS
01.00.00 Physical-mathematical sciences
DescriptionIn many applications, we study the time series (or a random process), which is the sum of the periodic deterministic function of time and random errors that distort the periodic signal. It is required to estimate the length of the period and the periodic component. It does not assume that the periodic function is included in any parameter family of functions, such as finite sums of sines and cosines. It is obvious that the assumption of occurrence of a periodic function in parametric family does not meet the characteristics of the real world, ie, is conditional, internal mathematical (look for the keys under the lamp because there is a light, not in the bush, where lost, because there are dark). For similar reasons, it is impossible to assume that the distribution function of the random errors is included in any parameter family of distributions. In accordance with the new paradigm of mathematical statistics in this article we studied the problem of nonparametric estimation (minimum) length of the period and the periodic component of the signal. On the basis of natural variation and scope of indicators is suggested a new class of nonparametric estimators of the length of the period and the periodic component in the time series. Based on the general results of statistics of objects of non-numeric nature we proved the consistency of these estimates. From the practical point of view it is necessary to minimize the numerical (one parameter - ability length of period of time) one or more of the 66 functionals, described in the article
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MODIFYING V-14 RUBBER WITH CARBON FIBERS
DescriptionThe influence of carbon fibers and modified carbon fibers on properties of industrially produced V-14 rubber is examined. The dependences of physical and mechanical properties, hardness, abrasion resistance and resistance in aggressive environment on few amount of filled fiber are established. Structural properties of reinforced elastomeric composites are studied by scanning electron microscopy. Elastomeric layer on the surface of modified carbon fiber, confirmed with high adhesion is identified
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MODELING OF MODERN TRENDS IN RISKORIENTED AUDIT WITH THE APPLICATION OF BAYES THEOREM
DescriptionThere are many ways to improve the decisionmaking process, but, with a big amount of data and complexity of decision-making trees, it's becoming more and more complicated to keep up with the flow of information coming from many spheres of modern life. Therefore, the development of various problemsolving approaches has become an important step in changing the face of existing technological systems. This idea appeared in the work of an American scientist J. Perl who, in 1988, founded a new probabilistic approach to artificial intelligence and developed principles of Bayesian Network. Bayesian Network is a graphical model that represents a set of random variables and their conditional dependencies. In the article, the most valuable parts of the given topic have been reviewed, cognitive maps have been compared with their partial manifestation - Bayesian Network; also, one of the options to practically use such models in the audit field has been analyzed by observing a possible decision-making process of giving a modified or unmodified opinion
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Description
The article substantiates the need for an accelerated informatization of the national system of professional development for science-intensive and high-tech industries, as one of the important components of the process of reforming the Russian economy. It was determined that under current conditions a decisive role in ensuring the successful operation of enterprises science-intensive and high-tech industries provides highly qualified personnel - the intellectual capital, which is formed in the process of training specialists within the system of continuous professional education and training (CPEandT). We show new capabilities of training a contingent of specialists in science-intensive and high-tech industries, offered by the introduction and expansion of use in system of CPEandT and modern educational technology (MET). We found reasonable prospect of the transition from reproductive to creative model of the organization of skills development. They are implemented mainly by a variety of electronic educational resources (EER), which are used for the development of various technologies. The article presents results of the comparative analysis of new and traditional technologies for the development of ESM and shows their role in the methodical maintenance of process of professional development. It is proved that the introduction of the EER within MET in CPEandT system radically changes the interaction of professionals and qualified teachers with contingent specialists of science-intensive and high-tech industries, and contributes to the effective organization of skills development
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MATHEMATICAL MODEL OF A DRYING PROCESS OF CORRUGATED CARDBOARD
DescriptionThe feature of the process of drying of corrugated cardboard is different drying processes on three sections of the drying table. The article solves the problem of obtaining a mathematical model of drying process of corrugated cardboard. This structural identification process, defined the input and output parameters, denoted the transmission coefficients for the control channels and indignation
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EXPECTED PROFIT OPTIMIZATION OF CONSULTING COMPANY USING THE METHODS OF DYNAMIC PROGRAMMING
DescriptionThe article presents the methods of specialists’ distribution for a consulting company between its projects in accordance with the methodology of dynamic programming for expected profit maximization. For its implementation, a mathematical model is being formed with nonlinear objective function and linear restrictions. The non-linearity of the objective function is due to the specifics of consulting companies and their size. The model includes probability parameters determined by expert evaluations method based on previous experience of the company in the analogical works and describing successful implementation of each project in its portfolio. Then the parameter and function of the state, satisfying recurrence are considered and linear replacement is performed to reserve a minimum number of experts on each job. The article gives a hypothetical example of a consulting company, including in its portfolio five projects with the mentioned profits in case of their success. On its basis, the developed method is implemented as a 5-step procedure of modeling of unknown parameters. Economic impact of the methods’ application is estimated . The developed model and method can be used by specialists in consulting companies, as well as in service industries
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PLOUGHSHARE PLOW WITH ADDITIONAL DISK WORKING BODIES
DescriptionThe article is devoted to main processing of soil with the combined ploughshare plow. We have made a review of the existing patents of this technological operation in this article. The article presents most important results of modeling of new types of constructions, problems of traction resistance and quality of preparation of soil for sowing. The article has the investigation character that was provided by the analysis of ways and means of mechanization for main soil processing with the furrow inversion and excerpts from works of the leading scientists on the studied subject, there were cited the types of patents which provide the optimal soil processing, there were indicated their disadvantages and ways of decision of problems. There was determined the main tendency of working outs of soil-processing combined machines, the advancing of constructions of tilling aggregates to improve the qualitative indexes of their work. Also there was substantiated the form of disk, namely there was specified the causal- investigative communication of existence of cuts in a disk of the soil-cultivating tool in comparison with a continuous disk. There was described the principle and the process of work of operated combined ploughshare plow. In the result of the work there was obtained the construction of ploughshare plow with additional working bodies which consist of disks of set batteries for every panel of ploughshare plow. In conclusions there were observed the main results reached at present time
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TO THE CALCULATION OF THE ECONOMIC POTENTIAL OF WIND ENERGY AND THE CHOICE OF WIND POWER PLANTS
DescriptionTo determine the feasibility of using PV systems we should assess the economic efficiency of wind energy in the region. At the same time, the first step should be an analysis of upper-air and power characteristics of the wind. The next stage is to determine the energy source of wind power (theoretical, technical and economic potential). The basic approach to the calculation of economic indicators should include a determination of the effectiveness of wind power installations in competition with traditional energy sources in a particular region. There are important following indicators: the payback period and economic efficiency. If the economic potential of wind power satisfies the requirements, the next step is to study the technical requirements applicable to wind power stations. For a preliminary assessment of the terrain, the article discloses a sequence of events that must be performed to assess the effectiveness of the installation of wind power systems. We have listed advantages and disadvantages of the main types of wind power plants, and other ramifications of choosing of basic functional units. The considered in an article analytical expressions for calculating the evaluation of economic efficiency of wind energy, the technical requirements for the basic parameters of wind turbines and their main advantages, disadvantages and features the work will allow at the design stage to carry out a preliminary assessment of effectiveness of the wind power stations for a particular region and locality, specific types consumers in view of their modes of operation and the quality requirements of electricity
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TO THE QUESTION OF THE SPEED OF WAVE PROPAGATION IN ELECTROMAGNETIC ENVIRONMENT
01.00.00 Physical-mathematical sciences
DescriptionThis question is about the speed of wave propagation in electromagnetic environment. Electromagnetic environment (field) is the space that fills the whole Universe, occupied by the electromagnetic particles-photons. At the heart of the special relativity theory, the constancy of the speed of light in vacuum is affirmed. According to modern concepts, the speed of light in vacuum is the maximum speed of the particle motion and propagation of interactions. However, light is the narrow range of electromagnetic radiation – (4÷8)·1014 Hz, therefore experimentally measured speed of light is referred to this frequency range. The fact that this speed of electromagnetic waves can theoretically be non permanent – physicists have pondered for a long time and this question is periodically excited in the scientific literature. The author of this article also had an impression that the speed of light, in which he understands distribution speed of waves of a wide range of frequencies in the electromagnetic environment, is not a constant. The article attempts to prove it. Many photons of different frequencies move simultaneously in different directions in a photonic electromagnetic field in environment. They are involved in the formation of a wave of compression – decompression in this field under the influence of the antenna radiated photons. It is approved that the speed of photons of different frequencies can change within a wide range from 1,285·103 m/s (ν = 1024 Hz) to 1,285·1012 m/s (ν = 106 Hz) and, therefore, the speed of wave propagation in the electromagnetic environments that are filled by photons of the same frequency or a narrow frequency range can change widely from 8,58·102 m/s to 8,58·1011 m/s and be significantly different from the experimentally discovered speed of light. Interplanetary space in different parts of the Universe can be represented by different spectra of photons and therefore they will have different speed of propagation of electromagnetic waves
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Description
The given school for young scientists has become a platform for the exchange of scientific knowledge between young and experienced scientists, practitioners, representatives of power structures. Including before its participants were representatives of CEMI RAS, Moscow state University, St. Petersburg state University, Financial University under the Government of the Russian Federation, Public chamber of the Russian Federation, foreign universities (University of new Brunswick (Canada); well-known scientists from leading universities of the South of Russia. The main organizers of this school were the Krasnodar branch of Financial University under the Government of the Russian Federation, the Krasnodar regional public charitable Foundation of "Scientific and educational initiatives of Kuban"