24 articles in this issue
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The algorithm of quasistochastic modifications of RSB cipher subkeys, which are components of main key of cryptographic conversions, is to be discussed.
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The classification of the first developed methods of antiphase symmetric space filtration is given, principles of design and peculiarities of realization of these methods in the coherent-optical converters (COC) based on set properties of space symm... see more
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On the basis of the executed theoretical researches the complex of the application programs of synthesis of phase antiphase symmetric spatial filters (ASSF) is designed for COT differential block diagram by means of the first or second type of symme... see more
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The statistic methods of analysis of synchronously registered cardiosignals on the basis of vector model of cyclic rhythmically connected stochastic processes are elaborated in this paper. The results of the analysis are compared with the methods of... see more
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The article is devoted to optimal by order of exactness formula of the evaluating of two dimensions of Fourier’s coefficients with using spline-interlineation.
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This article describes the test of generators, were constructed based upon signal leaving through the port LINE-OUT of computer sound card.
The novel approach to an estimation of information parameters of signals based on maximum likelihood function method and method on the basis of Fourier-transform of is suggested. This method is applied for an estimation of a difference modulation de... see more
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The analysis of experience of development of some information systems with databases with optic information about mammalian brain elements was carried out. Some recommendations about the development of analogs were given. Some methods of mathematic ... see more
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A spline-evaluation after the method of the least squares of two temporal sequences which contain a accidental constituent is offered, taking into account linear analytical connection between the determined bases of these sequences.
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The comparative effectivity of three decision rules in the task concerning equality of distribution of two samples Student criterion, Fisher criterion and rank criterion, is considered. Robustness of their characteristics to deviations of the probab... see more
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In paper on the basis of the adapted moment criterion of verification of statistical hypotheses of type Neyman-Pirson, moment descriptions of casual values and stochastic polynomials of higher orders are developed algorithm of exposure of permanent ... see more
The lacks of the existent control system director control mode of longitudinal motion are considered at landing approach reducing safety of flight quasi-object control systems by angular position is offered on pitch for a director control mode inclu... see more
K.V. Melnik,I.O. Kharchevka,O.V. Savchenko
The article represents results of H – optimization of one-dimensional flight control system on the example of longitudinal flight stabilization system for small UAV using only one sensor – altimeter. Results of controlled flight dynamics model... see more
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Features of mathematical description of the gimballed stabilization and course system for setting to horizon mode are analysed. The full model taking in account platform angular motion and, features of the studied mode control and electronic devices... see more
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The role of the student knowledge level identification process during the study with usage of trainers is described. The changes in the training complex structure are shown, which results in appearance of studying system adaptability that lets the i... see more
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Technique of application of least-squares method to a state space model to determine initial values of unknown parameters, which are necessary to identify a state space model by maximum likelihood method together with Kalman filtering, by the exampl... see more
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The variant of graphical objects identification for consequent transferring of them from paper form into electronic variant is considered. At the given work the color maps are considered, as one of identification parameters is color. As well it is i... see more
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On the examples of search extreme paths in a network is shown that principles and technique of electronic modeling can be used for successful modeling of flow optimization problems in the environment of the modern spreadsheet processor MS Excel in t... see more
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Geometric simulation of energy nonharmonic periodic processes in the radio technical circuits and systems with controlled simiconductor elements is discussed. Geometrical models of these processes are the curves of spherical surface.
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On concrete examples the shown modern technique of organization of optimal calculations for the multistage planning tasks in the environment of spreadsheet processor MS Excel and acceptance of administrative decisions on this basis.
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The basing of necessity of introduction systems of the continuous checking of the technical state of air ship construction is given. Principle of action and structural solving of uncontact deformations sensor of elements air ship construction is con... see more
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The model of wind-energy station with a vertical axis of rotation with using of planetary system of transfers was considered. Due to last it is possible to increase amount of the electric energy, which is received from a stream of air. Main principl... see more
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To be considered a model of wind power station with the concentrator of wind energy on the basis of the theory of ideal wind turbine to determine the utilization of wind energy.
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This article represents the insulation electrical model of high-voltage transformer, which is included in the X-ray diagnostic system. The electric field intensity, which is concentrated inside the construction details, are calculated. The experimen... see more