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排序方式: 共有366条查询结果,搜索用时 15 毫秒
1.
V. A. Grechishnikov Yu. E. Petukhov P. M. Pivkin A. V. Isaev V. B. Romanov V. A. Kosarev A. S. Babaev A. A. Ershov 《Russian Engineering Research》2020,40(1):70-72
The shaping of the toroidal cutting section of end mills is considered. Methods are devised for selecting the positional parameters in shaping the helical rake surface on the toroidal section. Relations are established between the geometric parameters of the end mill in the toroidal section. 相似文献
2.
A. P. Ershov 《Combustion, Explosion, and Shock Waves》1994,30(3):366-376
An isothermal model describing detonation under confined conditions, for example, in a porous medium; in a reasonable approximation is presented. It is shown that such a detonation can be analyzed qualitatively by the stochastic method of cellular automata.Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk. Translated from Fizika Goreniya i Vzryva, Vol. 30, No. 3, pp. 112–124, May–June, 1994. 相似文献
3.
Automation and Remote Control - The paper considers the problem of constructing a convex subset of the largest area in a nonconvex compact set on the plane as well as the problem of constructing a... 相似文献
4.
P. V. Sosnovskii V. A. Olovyanishnikov Yu. A. Bashnin T. D. Zhukova A. A. Ershov 《Metal Science and Heat Treatment》1991,33(4):280-285
1. | The cooling capacity of UZSP-1 polymeric quenching medium is determined by the molecular mass (MM) of the copolymer. |
2. | With concentrations of more than 1.5% for the UZSP-1 solutions, their cooling capacity is virtually constant for a constant MM and temperature (<80°c).>80°c).> |
3. | To eliminate the rigorous effect of the temperature of the medium on its cooling capacity in both cases where HMW and LMW polymners are used, it is expedient to heat-treat the components in solutions with temperatures of 20–60°C; in this case, the LMW concentration of the UZSP-1 should be no less than 1.5%. |
4. | The HMW solutions of UZSP-1 are subject to "thermal shock;" in this connection, it is more perferable to use low-molecular-weight UZSP-1 to avoid frequent regeneration of the quenching bath. |
5.
E. V. Ershov V. V. Selivanovskikh O. G. Ganicheva 《Pattern Recognition and Image Analysis》2009,19(1):103-105
The analysis of methods of images handling is carried out, the method of dynamic threshold division which is based on the
calculation of weight coefficient of points in the local area is suggested. The method of adaptive adjustment of the size
of the local area of the image representation is carried out to define the threshold value. Also methods of binary recursive
filtration and mathematical morphology to reduce interference are introduced.
The article is published in the original.
Evgenii Valentinovich Ershov. The first pro-rector, head of the department of PC software, professor of the Cherepovetsk State University. Finished postgraduate
studies at the North-Western Polytechnic Correspondence Institute (the city of St. Petersburg) in 1993 and defended a Ph.D.
thesis on specialty 05.02.11 “Methods of Control and Diagnostics in Mechanical Engineering.” Circle of scientific interests:
the development of methods and principles for the building of multi-functional technical vision systems, their mathematical
and software support. Five postgraduate students defended theses under his supervision. Author of 170 scientific and teaching
works, including 4 monographs, 85 articles, of which 12 were published in reviewed journals, 39 theses of reports, 2 reports
on SRD, 3 patents. Took part in 20 scientific and technical conferences in Moscow, St. Petersburg, Cherepovetsk, Kursk, Tambov,
Vologda, Tula, Krasnoyarsk, Yoshkar Ola, and Kemerovo.
Vera Vital’evna Selivanovskikh. Docent of the department of PC software of the Cherepovetsk State University. Finished postgraduate studies at the Cherepovetsk
State University on specialty “Solid-State Physics” in 2000 and began to study the problem of the optic-electronic control
over the quality of metallurgical industry products. Defended a Ph.D. thesis on specialty 05.13.06 “Automation and Management
of Technological Processes and Productions” in 2007. Author of more than 30 scientific and teaching works, including 1 monograph,
7 articles, of which 2 were published in reviewed journals, 13 theses of reports. Took part in the scientific and technical
conferences in Moscow, Cherepovetsk, Kursk, Tambov, Vologda, Tula, Yoshkar Ola.
Oksana Georgievna Ganicheva. Docent of the department of PC software of the Cherepovetsk State University. Finished postgraduate studies at the Cherepovetsk
State University and defended a Ph.D. thesis on specialty 05.13.06 “Automation and Management of Technological Processes and
Productions” in 2007. Circle of scientific interests: the development and perfecting of methods for the optic-electronic control
over the quality of metallurgical industry products. Author of more than 30 scientific and teaching works, including 1 monograph,
7 articles, of which 2 were published in reviewed journals, 10 theses of reports. Took part in the scientific and technical
conferences in Cherepovetsk, Kursk, Vologda, Tula, Yoshkar Ola. 相似文献
6.
7.
A. S. Narikovich P. A. Ershov V. N. Leitsin V. V. Savin A. A. Snigirev 《Instruments and Experimental Techniques》2017,60(3):390-393
This article describes the application of high-resolution X-ray computed tomography to assess the critical parameters of refractive lenses for X-ray optics that determine the quality of compound optical systems. A microfocus Y. Cheetah X-ray system has been used for three-dimensional visualization of the surface and internal structure of refractive lenses made of high-purity aluminum with geometric apertures of 500 and 1500 μm. A Fein Focus X-ray tube with a focal spot size of less than 2 μm provides the resolution necessary for detecting critical-size microstructure defects in the material of the lens. 相似文献
8.
9.
Kulakov G. V. Vatulin A. V. Ershov S. A. Kozlov A. V. Konovalov Yu. V. Mainikov E. V. 《Atomic Energy》2021,130(6):328-331
Atomic Energy - The timeliness of the development of small nuclear power plants is determined by their economic utility and prospects for use as an energy source in remote regions with... 相似文献
10.
The effect of thermal annealing on the resistance of borophosphate systems to crystallization and the effect of crystallization on the hydrolytic stability of the materials were examined. Systems containing simulated Cs + Sr fraction were studied. Annealing at 400–500°C leads to a noticeable decrease in the leach rate. Annealing at a higher temperature, 600°C, leads to crystallization of the glass and to a considerable increase in the leach rate. 相似文献