In the article are given the results of the researches of the glass sea sponges Hyalonema sieboldi and Ferronema sp. spicules as new object of nano-photonics. The distribution of refractive index over the cross sectio...
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Work is dedicated to the synthesis of neural network to inverse kinematics task of spherical parallel manipulator. This neural network is used for calculating of the desired orienting drives rotation angle for this pa...
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Work is dedicated to the synthesis of neural network to inverse kinematics task of spherical parallel manipulator. This neural network is used for calculating of the desired orienting drives rotation angle for this parallel manipulator. The carry out investigations showed high efficiency and accuracy of the approach proposed.
This paper deals with the problem of the automation of design procedures for nonlinear control systems. As an example the procedure has been realized for the well-known technique consisting of the exact linearization ...
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This work presents an adaptive fiber-optic interferometer which is based on multimode optical fiber (MOF) as a sensor and diffusion holograms recorded in semiconductor PR crystal CdTe:V without any electric field as a...
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This work presents an adaptive fiber-optic interferometer which is based on multimode optical fiber (MOF) as a sensor and diffusion holograms recorded in semiconductor PR crystal CdTe:V without any electric field as adaptive phase demodulators. Vectorial mixing of light waves (lambda = 1064 nm) with different polarization states (linear and elliptical) in the geometry of anisotropic diffraction makes possible to avoid applying electric field to the crystal for realization of linear phase-to-intensity transformation. At the same time recording of the hologram at high spatial frequencies (Lambda ap 0.19 mum) in the reflection geometry with appropriate concentration of PR centers allows to increase both hologram efficiency and, as a sequence, interferometer's sensitivity without applying external electric field to the crystal.
The influences of evaporation flux rate and substrate temperature on Mg/Si (111) interface formation have been studied. At the flux rate of about 0.08 nm/min and substrate temperatures of 100-140 oC only continuous fi...
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ISBN:
(纸本)9812705996
The influences of evaporation flux rate and substrate temperature on Mg/Si (111) interface formation have been studied. At the flux rate of about 0.08 nm/min and substrate temperatures of 100-140 oC only continuous films of magnesium silicide have been grown. But at the flux rate of about 0.5 nm/min and substrate temperatures of 100-150 oC the surface phase Mg2Si ((2/3)√3x(2/3)√3)-R30o has been grown. The system has been probed by in situ surface sensitive techniques as AES, LEED and EELS.
This paper deals with the problem of the automation of design procedures for nonlinear control systems. As an example the procedure has been realized for the well-known technique consisting of the exact linearization ...
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This paper deals with the problem of the automation of design procedures for nonlinear control systems. As an example the procedure has been realized for the well-known technique consisting of the exact linearization via nonlinear feedback. The developed software achieves the synthesis of control laws in symbolical form that is convenient for further analysis, modeling, and practical implementation of the system. Examples of the software application to underwater vehicle and robot manipulator are given and discussed.
The results of investigations devoted to a search of conditions of the simultaneous metal and semiconductor silicides formation being important problem for microelectronics are presented in the paper. The Si(111)-Fe a...
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A relaxation-contour method for retrieving motion vectors from sequential satellite images is presented. The contour part explores image contours (level set) to extract targets (extreme points on these contours). Moti...
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A relaxation-contour method for retrieving motion vectors from sequential satellite images is presented. The contour part explores image contours (level set) to extract targets (extreme points on these contours). Motion vectors are derived by examining the correspondence between targets extracted from symmetrical pairs of images. The basic criterion is geometrical similarity of contours taken at the same level (contour matching), while gradient information is used to sustain robustness of search. Vague contouring generates much more motion vectors than by the current template matching methodology. Naturally, many invalid vectors are generated in this way, yet their abundance gives preferentiality to a relaxation labeling approach aimed at selection of correct vectors from several candidates to be consistent (in space and time) with others. Estimates of water vapor motion vectors obtained using relaxation-contour and maximum cross-correlation (with and without relaxation labeling) methods have been compared to those derived manually. Results show advantages of the relaxation-contour method both in density and quality. We contemplate future integration of this scheme with assimilation models.
The paper deals with the sequential synthesis procedure of decentralized (multi-loop) PID-controllers based on the estimation of control loops interaction in the form of multiplicative plant uncertainty. It is shown t...
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