Zobrazeno 1 - 10
of 8 539
pro vyhledávání: '"Kochetkov A."'
Autor:
Kochetkov, Yury
We consider the space $P$ of generic complex 5-degree polynomials. Critical values of such polynomial, i.e. four points in the complex plane, either are vertices of a convex quadrangle $Q$, or vertices of a triangle $T$ with one point inside $T$. The
Externí odkaz:
http://arxiv.org/abs/2405.10594
Publikováno v:
E3S Web of Conferences, Vol 431, p 08001 (2023)
The paper proposes new methods of normalisation of geometrical parameters of macro-roughness of road and bridge pavements on the basis of natural harmonic analysis (in development of Fourier series application), applied, among others, for steel-reinf
Externí odkaz:
https://doaj.org/article/4280af9d99914ff6917e968e063b92f1
Autor:
Tsymbalov, I., Gorlova, D., Ivanov, K., Starodubtseva, E., Volkov, R., Tsygvintsev, I., Kochetkov, Yu., Korneev, Ph., Polonski, A., Savelev, A.
We propose a novel method for changing the length of laser wakefield electron acceleration in a gas jet by a cylindrical blast wave created by a perpendicularly focused nanosecond laser pulse. The shock front destroys the wake thus stopping interacti
Externí odkaz:
http://arxiv.org/abs/2403.19828
Publikováno v:
Медицина катастроф, Iss 4 (2019)
Externí odkaz:
https://doaj.org/article/86748f3c247242c8a594e1ba462f1731
Autor:
Ostroumova O.D., Kochetkov A.I.
Publikováno v:
Системные гипертензии, Vol 15, Iss 1, Pp 23-31 (2018)
Objective. To conduct a comparative analysis of blood pressure (BP) profile characteristics in middle-aged (45–65 years) patients with stage 1–2 hypertension not associated with comorbid cardiovascular disease depending on smoking status; to esti
Externí odkaz:
https://doaj.org/article/0a6e511cef1a4fbb93f16245b8703ea2
Autor:
Kochetkov, Yury
A cubic Galois polynomial is a cubic polynomial with rational coefficients that defines a cubic Galois field. Its discriminant is a full square and its roots $x_1,x_2,x_3$ (enumerated in some order) are real. There exists (and only one) quadratic pol
Externí odkaz:
http://arxiv.org/abs/2401.11208
Autor:
Kochetkov, Yury
In this purely experimental work we try to represent the set of plane maps with 3 vertices and 3 faces as a bipartite ribbon graph. In particular, this construction allows one to estimate the genus of the initial set.
Comment: 5 pages, 9 figures
Comment: 5 pages, 9 figures
Externí odkaz:
http://arxiv.org/abs/2308.15080
Autor:
Kochetkov, Yury, Osipov, Alexandr
For a two dimensional vector $\bar v=(\alpha,\beta)$, where $\alpha>0, \beta>0$ are irrational numbers independent over $\mathbb{Q}$, we consider the set $D_n=\{(i\alpha\,{\rm mod}\,1,i\beta\,{\rm mod}\,1),i=1,\ldots,n\}$ in a two dimensional torus a
Externí odkaz:
http://arxiv.org/abs/2308.01848
Autor:
Billebaud A., Lecouey J.-L., Chevret T., Chabod S., Doligez X., Kochetkov A., Krása A., Lecolley F.-R., Lehaut G., Marie N., Messaoudi N., Uyttenhove W., Vittiglio G., Wagemans J., Bécares V., Villamarin D., Mellier F.
Publikováno v:
EPJ Web of Conferences, Vol 247, p 08005 (2021)
The Modified Source Multiplication method is used to determine an unknown reactivity level of a reactor from a known one if one has access to the detector counting for both levels when the reactor is fed by a constant neutron source like an Am-Be sou
Externí odkaz:
https://doaj.org/article/c302bdf552de47eb94580f3045887920
Autor:
Kochetkov A., Billebaud A., Chabod S., Krása A., Lecolley F.-R., Lecouey J.-L., Lehaut G., Marie N., Messaoudi N., Vittiglio G., Wagemans J.
Publikováno v:
EPJ Web of Conferences, Vol 247, p 08002 (2021)
Three sub-critical (SC) core configurations were investigated in the VENUS-F zero power reactor coupled with the GENEPI-3C accelerator. The SC10 and SC12 were a mock-up of a MYRRHA start-up core and SC11 represented a more complex MYRRHA core loaded
Externí odkaz:
https://doaj.org/article/b2cecbaf8baa4f72ab7f5d7f67aa07ef