Zobrazeno 1 - 10
of 16
pro vyhledávání: '"P. K. Potapov"'
Autor:
A. K. Potapov
Publikováno v:
Омский научный вестник: Серия "Общество. История. Современность", Vol 9, Iss 3, Pp 30-34 (2024)
The article is devoted to the history of the environmental movement in the Baltic republics during the first stages of perestroika (1985–1987). The aim of the paper is to analysis of the use of the environmental agenda to develop political natio
Externí odkaz:
https://doaj.org/article/45a9599005fb4d4496711fc4a1529857
Publikováno v:
Национальный психологический журнал, Vol 53, Iss 1, Pp 41-55 (2024)
Background. The optimal condition for the progressive development of society is the creation of an educational environment that takes into account the psychological characteristics of gifted students in the context of achieving their subjective well-
Externí odkaz:
https://doaj.org/article/80a140882a754fcc83160383b2af3307
Publikováno v:
RUDN Journal of Psychology and Pedagogics, Vol 20, Iss 1, Pp 67-86 (2023)
Due to the growing rates of migration of young people from the Siberian region to the west, it is becoming increasingly relevant to study the personal prerequisites for making a decision to change their place of residence. Schoolchildren as future gr
Externí odkaz:
https://doaj.org/article/d9acdc2066ff4d80b953fa4dc419dadc
Publikováno v:
Electronic Journal of Differential Equations, Vol 2017, Iss 140,, Pp 1-10 (2017)
We consider a system of ordinary differential equations with nonlinearity describing relay hysteresis under sinusoidal external influence. Theorems on sufficient conditions for the existence of subharmonic solutions to the system being investigate
Externí odkaz:
https://doaj.org/article/76329972abdf49cfb61188f8524f0a17
Publikováno v:
Electronic Journal of Differential Equations, Vol 2016, Iss 124,, Pp 1-9 (2016)
We consider an ordinary differential equation of second order with constant coefficients and a discontinuous right-hand side. First we use the point mapping method defining first return functions, then we use the phase-plane method. We establish b
Externí odkaz:
https://doaj.org/article/3247c7c5324741e7af39a4721f470bfa
Publikováno v:
Electronic Journal of Differential Equations, Vol 2016, Iss 04,, Pp 1-8 (2016)
We consider a second-order differential equation with discontinuous nonlinearity and sinusoidal external influence, and obtain conditions for the non-existence of periodic solutions.
Externí odkaz:
https://doaj.org/article/b546141480d742a2b129babfb3f3f9e8
Publikováno v:
Abstract and Applied Analysis, Vol 2017 (2017)
In this paper, we give a characterization of Nikol’skiĭ-Besov type classes of functions, given by integral representations of moduli of smoothness, in terms of series over the moduli of smoothness. Also, necessary and sufficient conditions in term
Externí odkaz:
https://doaj.org/article/4a2c6d8a276b407faf81b0a4ac953de7
Publikováno v:
Electronic Journal of Differential Equations, Vol 2014, Iss 221,, Pp 1-6 (2014)
We consider an ordinary differential equation of second order with discontinuous nonlinearity relative to the phase variable. Phase trajectories are studied. We establish a theorem on the existence of a continuum set for nontrivial solutions and t
Externí odkaz:
https://doaj.org/article/9d870e6620ad4841b30de8f96f56680b
Autor:
N. V. Varlamova, A. E. Komlev, P. K. Potapov, A. V. Yastrebov, I. V. Markin, P. G. Tolkach, E. A. Zhurbin, A. V. Gracheva
Publikováno v:
Biomedical engineering. 56(4)
Determination of respiratory rate is a necessary task in assessing the state of health in humans. This review provides a description of modern devices used for recording and monitoring respiratory rate. The advantages and disadvantages of the princip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feb31326a34d7193e9fc19deeef7f857
https://pubmed.ncbi.nlm.nih.gov/36345372
https://pubmed.ncbi.nlm.nih.gov/36345372
Publikováno v:
Electronic Journal of Differential Equations, Vol 2013, Iss 255,, Pp 1-6 (2013)
We study the Lavrent'ev mathematical model for separated flows with an external perturbation. This model consists of a differential equation with discontinuous nonlinearity and a boundary condition. Using a variational method, we show the existenc
Externí odkaz:
https://doaj.org/article/c5cfb4f288984156a89a1cca8aa53cc1