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Precessional Dynamics of Octahedra in CsPbBr₃. [PDF]

J Chem Theory Comput
Farigliano LM, S Gomes-Filho M, Reily Rocha A, Martini Dalpian G.   +3 more
europepmc   +1 more source

Polar coordinates and generalized h-type indices

Journal of Informetrics, 2020
: This article highlights the importance of using polar coordinates when studying functions, in particular in relation to generalized h-type indices. Concretely, generalized h-type indices are essentially polar coordinates.
Leo Egghe, Ronald Rousseau
exaly   +1 more source

Polar coordinates projection: A simple data visualization tool

TrAC - Trends in Analytical Chemistry, 2005
The polar coordinates projection (PCP) method consists in plotting samples as the center of gravity of the data values expressed in polar coordinates.
Christophe Malabat, Douglas N Rutledge
exaly   +2 more sources

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Wavelets in polar coordinates

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings, 2002
The problems encountered in the development and implementation of two-dimensional orthonormal wavelet bases and their filter banks in polar coordinates are addressed. These wavelets and filter banks have possible applications in processing signals that are collected by sensors working in the polar coordinate system, such as biomedical and radar ...
Oleg Andric, Carolyn Johnston, Nurgun Erdol   +2 more
openaire   +1 more source

The teaching of polar coordinates with dynamic mathematics software

International Journal of Mathematical Education in Science and Technology, 2015
The purpose of this study was to determine the effects of dynamic mathematics software on the achievement of pre-service mathematics teachers in the topic of polar coordinates and to solicit their opinions about computer-assisted instruction.
Enver Tatar
exaly   +2 more sources

Constrained contouring in polar coordinates

Proceedings of IEEE Conference on Computer Vision and Pattern Recognition, 2002
A constrained contour is an outline of a region of interest, obtained by linking the possible edge points under the constraints of connectivity, smoothness, image context, and an externally specified approximate contour. A constrained contouring algorithm in polar coordinates that traces closed contours using their rough approximations is discussed.
Shriram V. Revankar, David B. Sher
openaire   +1 more source

A Spectral Method for Polar Coordinates

Journal of Computational Physics, 1995
A set of polynomial functions that can be used in spectral expansions of \(C^\infty\) functions in polar coordinates is defined by a singular Sturm-Liouville equation. With these basis functions, the spectral representations remain analytic at the pole despite the coordinate singularity, as all azimuthal modes satisfy the pole condition exactly at the ...
Matsushima, T., Marcus, P. S.
openaire   +2 more sources

Generating rectangular coordinates in polar coordinate order

IEEE Signal Processing Magazine, 2005
This paper proposes a means by which 2D data represented using the rectangular coordinate system can be converted to its equivalent in the polar coordinate system. Taking note that the order in which data becomes available with a polar coordinate measuring device is most unnatural from the point of view of a rectangular coordinate system, this paper ...
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Three-Dimensional Polar Coordinates

American Journal of Physics, 1964
It is shown that conventional plane-polar coordinates can be extended to three dimensions. The result is that three-dimensional motion of a particle can be viewed as instantaneous planar motion plus a rotation of the plane of motion around the instantaneous radius vector from the origin to the particle.
openaire   +2 more sources