Zobrazeno 1 - 10
of 15
pro vyhledávání: '"A. I. Ptashnik"'
Publikováno v:
Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika, Vol 0, Iss 6, Pp 37-43 (2010)
The purpose of the paper is a structure formation and an analysis of non-sensing element vector control system developed for tractional electric drive with the help of mathematical simulation method. The paper presents a functional diagram of the ele
Externí odkaz:
https://doaj.org/article/1e85561db6264bcfba8a77530bc82e77
Publikováno v:
Gornyi Zhurnal. :30-33
The article discusses mining efficiency and the related research activities at Polyus Krasnoyarsk. Olimpiada and Blagodat gold fields feature difficult geological, hydrological and geotechnical conditions. Sustainable mining at high rate and high out
Publikováno v:
IOP Conference Series: Earth and Environmental Science. 539:012156
The article discusses the formation of workings in the conditions of rational use of subsoil resources. Studies of a quantitative assessment of the influence of the parameters of open-pit mining of mineral deposits on the volumes of overburden in the
Publikováno v:
IOP Conference Series: Earth and Environmental Science. 378:012017
The article presents the formation of man-made workings in the context of conditions of urbanization of modern society. It also studies the changes in the volume and complexity of mining operations by technological processes, depending on the shape o
Autor:
T. P. Goi, B. I. Ptashnik
Publikováno v:
Ukrainian Mathematical Journal. 49:204-215
For weakly nonlinear hyperbolic equations of order n, n≥3, with constant coefficients in the linear part of the operator, we study a problem with nonlocal two-point conditions in time and periodic conditions in the space variable. Generally speakin
Autor:
L. I. Komarnitskaya, B. I. Ptashnik
Publikováno v:
Ukrainian Mathematical Journal. 47:1364-1377
For differential equations with constant coefficients unsolvable with respect to the higher time derivative, we establish conditions of the existence and uniqueness of solutions of problems with conditions local in time and periodic in space variable
Publikováno v:
Ukrainian Mathematical Journal. 46:1795-1802
We study the problem for Shilov parabolic equations of arbitrary order with constant coefficients with conditions nonlocal in time and periodic in space variables. We establish conditions for the existence and uniqueness of a classical solution of th
Autor:
B. I. Ptashnik, P. I. Shatabalyuk
Publikováno v:
Journal of Soviet Mathematics. 67:3025-3030
We consider the analog of a multipoint problem on the time variable for a hyperbolic equation with constant coefficients and an arbitrary number of spatial variables. The solution of the problem is sought in the class of functions that are almost-per
Publikováno v:
Ukrainian Mathematical Journal. 38:496-500
Autor:
V. N. Polishchuk, B. I. Ptashnik
Publikováno v:
Ukrainian Mathematical Journal. 32:151-154