Results 271 to 280 of about 190,435 (331)

Spatial triangulation in a local, astronomical oriented cartesian coordinate system [PDF]

Bulletin géodésique, 1969
For the determination of spatial coordinates of the points of a net-work a local Cartesian coordinate system is introduced, whoze z-axis coincides with the true vertical of an arbitrarily selected central point in the net-work, and whose x-axis is oriented to astronomical north. The observed horizontal directions and vertical angles, which refer to the
Karl Ramsayer
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Closed formulae for transformation of the cartesian coordinate system into a system of geodetic coordinates

Studia Geophysica et Geodaetica, 1985
Relations for the direct transformation of the Cartesian coordinate system into a system of geodetic coordinates.
Miloš Pick
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Some Remarks on the Helical-Cartesian Coordinate System and Its Applications

Journal of Fluids Engineering, 1986
On presente des equations d'ecoulement compressible visqueux incluant des expressions pour les composantes de contrainte visqueuse et la fonction de dissipation visqueuse dans un systeme de coordonnees curvilignes general helicoidal avec un pas ...
Zhong-Guang Xu, Dah-Nien Fan
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A Cartesian coordinate system for human cerebral cortex

Journal of Neuroscience Methods, 2003
The most commonly used method for specifying the locations of functional areas in the human cerebral cortex is the coordinate system of Talairach and Tournoux (Co-planar Stereotaxic Altas of The Human Brain (1988) Georg Thieme Verlag, Stuttgart). It was designed to locate subcortical nuclei by reference to an axis joining the anterior and posterior ...
John G. Morris, Alan W. Freeman, David F. Li, Hoang D. Tran-Dinh   +3 more
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A Cartesian Coordinate Algorithm for Power System State Estimation

IEEE Transactions on Power Apparatus and Systems, 1983
This paper presents a new steady-state estimator based on the Cartesian coordinate formulation of nodal and line flow equations and minimization of weighted least squares (WLS) of the residuals. The fact that the rectangular coordinate version of network Performance equations is completely expressible in a Taylor series and contains terms up to the ...
L. Roy, N.D. Rao
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Imaginary Points in Cartesian Coordinate System

Geometry & Graphics, 2019
Geometric models are considered that allow symbolic representation of imaginary points on a real Cartesian coordinate plane XY. The models are based on the fact that through every pair of imaginary conjugate points A~B with complex coordinates x = a ± jb, y = c ± jd one unique real line m passes. For the image of imaginary points, it is proposed to use
Viktor Korotkiy, A. Girsh
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A Recipe for Transforming ICRS Coordinates to a Cartesian Coordinate System Centered on a Cluster

Research Notes of the AAS, 2020
Abstract For the purpose of studying internal kinematics of a star cluster it is often convenient to convert the astrometric parameters of its members into cluster-centered Cartesian coordinates. I provide a detailed and rigorous derivation of such a coordinate transformation and briefly compare it with a selection of published ...
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