Results 11 to 20 of about 704,600 (271)

On Bogoliubov Transformation of Scalar Wave Functions in De Sitter Space [PDF]

open access: yes, 1994
We discuss the Bogoliubov transformation of the scalar wave functions caused by the change of coordinates in 4 dimensional de Sitter space. It is shown that the exact Bogoliubov coefficients can be obtained from the global coordinates to the static ...
Sato, Haru-Tada, Suzuki, Hisao
core   +3 more sources

Analysis of the algorythms accuracy of the plane and space geodetic coordinates transformation

open access: yesGeodesy and Cartography, 2012
The accuracy of the coordinates computed by transformation from one system to another is analysed. Values of transformation parameters are computed by the least-square method taking into account the accuracy of the coordinates of the identical points in ...
Jonas Skeivalas, Robertas Dargis
doaj   +1 more source

Multiinstantons in curvilinear coordinates [PDF]

open access: yes, 1999
The 'tHooft's 5N-parametric multiinstanton solution is generalized to curvilinear coordinates. Expressions can be simplified by a gauge transformation that makes $\eta$-symbols constant in the vierbein formalism.
't Hooft   +11 more
core   +5 more sources

Spinning BTZ Black Hole versus Kerr Black Hole : A Closer Look [PDF]

open access: yes, 1998
By applying Newman's algorithm, the AdS_3 rotating black hole solution is ``derived'' from the nonrotating black hole solution of Banados, Teitelboim, and Zanelli (BTZ). The rotating BTZ solution derived in this fashion is given in ``Boyer-Lindquist-type'
B. Carter   +11 more
core   +4 more sources

Transformation of Precise Local Networks into the National Network Using GPS [PDF]

open access: yesActa Montanistica Slovaca, 2007
The precise local survey network with the deep permanent marking of control stations was created for research purposes of the stage observation of the slope slides at localities of reclamation at the sites of the open-cast mines by geodetic and ...
Pavel Hánek, František Bubeník
doaj  

Accuracy of geodetic coordinates using Helmert transformation algorithm

open access: yesGeodesy and Cartography, 2012
Accuracy of geodetic coordinates transformed from one coordinate system to another is analysed in the publication. Values for transformation parameters are computed using the least-squares method.
Jonas Skeivalas
doaj   +1 more source

CONSIDERATIONS ON LINEAR CONFORMAL TRANSFORMATION

open access: yesAgricultura, 2011
The paper refers to the transformation of coordinates from a rectangular coordinate system into another system. Depending on the accuracy required and distance between points, topographical methods of transformation are presented.
M. V. Ortelecan, Diana Ficior
doaj   +1 more source

Testing binary dynamics in gravity at the sixth post-Newtonian level

open access: yesPhysics Letters B, 2020
We calculate the motion of binary mass systems in gravity up to the sixth post–Newtonian order to the GN3 terms ab initio using momentum expansions within an effective field theory approach based on Feynman amplitudes in harmonic coordinates.
J. Blümlein   +3 more
doaj   +1 more source

Analysis of Transformation Methods of Hydroacoustic and Optoelectronic Data Based on the Tombolo Measurement Campaign in Sopot

open access: yesRemote Sensing, 2022
Measurements in the coastal zone are carried out using various methods, including Global Navigation Satellite Systems (GNSS), hydroacoustic and optoelectronic methods.
Oktawia Lewicka   +9 more
doaj   +1 more source

Transformation of GPS measurements and post transformation arrangement of the coordinates [PDF]

open access: yesActa Montanistica Slovaca, 2000
The satellite system NAVSTAR GPS gives positions in the WGS 84. This represents a geocentric equatorial system suitable for the global positioning. In such a form, it is not fitted to the geodetical positioning in national systems.
Hankovský Juraj
doaj  

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