Zobrazeno 1 - 10
of 38
pro vyhledávání: '"M. S. Petrovskaya"'
Publikováno v:
Инфекция и иммунитет, Vol 9, Iss 5-6, Pp 800-804 (2020)
Endogenous uveitis (EU) in children is a multifactorial sight-threatening disease that reduces patient’s quality of life. Proliferative syndrome (PS) coupled to developing adhesions, opacity of vitreous body, epiretinal and preretinal membranes is
Externí odkaz:
https://doaj.org/article/086b0b50bd8f4d38a3239a6add0ed64c
Autor:
J. B. Zieliński, M. S. Petrovskaya
Publikováno v:
Advances in Geosciences, Vol 1, Pp 149-153 (2003)
A new calibration/validation experiment for GOCE mission is proposed. Simultaneously with the satellite mission another gradiometer will be flown on the board of the stratospheric balloon on the altitude 20–40 km. The measurements can be compared w
Externí odkaz:
https://doaj.org/article/97b059fd516e4ee89946925a5e5de96d
Autor:
A. N. Vershkov, M. S. Petrovskaya
Publikováno v:
Solar System Research. 53:5-19
Second-order derivatives of the Earth’s potential in a local north-oriented coordinate system are expanded in series of modified spherical harmonics. Linear relations are derived between the spectral coefficients of these series and the spectrum of
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Studia Geophysica et Geodaetica. 60:1-16
Due to the complicated structure of their expressions, the ellipsoidal harmonic series for the derivatives of the Earth’s gravitational potential are commonly applied only on a reference ellipsoid. They depend on the first- and second-order derivat
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Solar System Research. 49:114-122
The results of further development of the theory of modeling the Earth’s gravitational field by series in ellipsoidal harmonics, which better approximate the Earth’s gravity potential as compared with traditional series of spherical harmonics, ar
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Studia Geophysica et Geodaetica. 58:190-206
In this contribution we continue our earlier research, concerning the ellipsoidal harmonic expansions of the Earth disturbing gravitational potential and its derivatives on an external reference ellipsoid confocal with respect to the normal ellipsoid
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Solar System Research. 47:376-385
A set of spherical harmonics is the most widely used representation of the Earth’s gravity potential. This series converges outside and on the surface of a reference sphere enveloping the Earth. However, the Earth’s surface is better approximated
Autor:
A. N. Vershkov, M. S. Petrovskaya
Publikováno v:
Studia Geophysica et Geodaetica. 57:353-368
The Legendre functions of the second kind, renormalized by Jekeli, are considered in the external space on a set of ellipsoids of revolution which are confocal with respect to the normal ellipsoid. Among these ellipsoids a reference one is chosen whi
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Cosmic Research. 50:152-159
Series of spherical harmonics are constructed for derivatives of all orders of the gravitational potential of an arbitrary three-dimensional body, including the Earth, Moon and other planets. These series have a common structure, as simple as the pot
Autor:
M. S. Petrovskaya, A. N. Vershkov
Publikováno v:
Journal of Geodesy. 86:521-530
This research represents a continuation of the investigation carried out in the paper of Petrovskaya and Vershkov (J Geod 84(3):165–178, 2010) where conventional spherical harmonic series are constructed for arbitrary order derivatives of the Earth