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1.
A weighting algorithm to determine the coordinates of the center of a Gaussian laser beam projected onto a matrix photodetector is considered. The influence of the internal noise of the photodetector, the maximum brightness of the signal at the beam maximum, and the beam radius on the precision of the algorithm is investigated. Recommendations on image processing are presented. 相似文献
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Decision support in equipment condition monitoring systems with image processing is analyzed. Long-run accumulation of information about earlier made decisions is used to realize the adaptiveness of the proposed approach. It is shown that unlike conventional classification problems, the recognition of abnormalities uses training samples supplemented with reward estimates of earlier decisions and can be tackled using reinforcement learning algorithms. We consider the basic stages of contextual multi-armed bandit algorithms during which the probabilistic distributions of each state are evaluated to evaluate the current knowledge of the states, and the decision space is explored to increase the decision-making efficiency. We propose a new decision-making method, which uses the probabilistic neural network to classify abnormal situation and the softmax rule to explore the decision space. A modelling experiment in image processing was carried out to show that our approach allows a higher accuracy of abnormality detection than other known methods, especially for small-size initial training samples. 相似文献
4.
The Internet community all over the world is showing growing interest in a subject of information security and anonymity on the Internet, especially after revelations of Edward Snowden, when it became known about mass spying by certain organizations (such as the US National Security Agency) on Internet users, companies, political organizations, etc. This led to the active development of various anonymous networks, VPN services, proxies, etc. The aim of this article is to review popular methods of providing Internet anonymity, compare them, and discover their benefits and disadvantages. 相似文献
5.
V. F. Savchenko L. V. Makhnach I. I. Emel’yanova V. V. Pan’kov 《Inorganic Materials》2006,42(7):788-793
The formation of LaSrNiO4-and LaSrScO4-based solid solutions with the general stoichiometry LaSrNi1 ? x ScxO4 (0 < x < 1) has been studied in air at temperatures from 700 to 1300°C. According to x-ray diffraction results, the former solid solutions exist in the composition range 0 < x ≤ 0.2. Their lattice parameters have been determined, and their resistivity and thermoelectric power have been measured as functions of temperature. Oxygen release and absorption measurements at temperatures from 20 to 1000°C and oxygen partial pressures from 2 to 330 Pa suggest that the presence of scandium has a stabilizing effect on the oxygen sublattice of the solid solutions. The possible mechanisms of this effect are discussed. 相似文献
6.
A. V. Savchenko 《Optoelectronics, Instrumentation and Data Processing》2009,45(3):255-261
The problem of automatic recognition of half-tone images based on the minimum information discrimination principle is formulated and solved. A method of directed enumeration of the set of alternatives in the Kullback-Leibler information metric is proposed as opposed to the method of complete enumeration of competing hypotheses. A program and results of an experimental study of the method are presented. It is shown that the proposed algorithm is characterized by increased accuracy and reliability of automatic image recognition. 相似文献
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S. N. Savchenko 《Journal of Mining Science》2004,40(1):24-30
The values of horizontal tectonic stresses are estimated up to depth of 11 500 m by the measurement of velocities of longitudinal and transverse waves in rock samples extracted from various depths when drilling Kola Ultradeep Well. 相似文献
8.
The viscosity properties of dilute solutions of two modifications of Armalon (MD and X) with properties of other rigid-chain aromatic copolyamides are compared. The best affinity of 96% sulfuric acid for PPTA and Armalon-MD and the worst affinity for Armalon-X are demonstrated.__________Translated from Khimicheskie Volokna, No. 1, pp. 24–26, January–February, 2005. 相似文献
9.
M. B. Arkulis N. I. Misheneva Yu. I. Savchenko 《Russian Journal of Nondestructive Testing》2016,52(11):623-626
Application of metal magnetic memory effect to revealing stress-concentration zones (SCZ) that occur in a specimen due to cyclic loads within the elastic deformation domain is considered. Experimental data are provided on the search for a correlational dependence between the magnetic stray field of a hot-rolled no. 6 channel bar and the stresses in the domains of elastic and plastic deformation. 相似文献
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