Results 1 to 10 of about 75,206 (160)

Discrete two dimensional Fourier transform in polar coordinates part II: numerical computation and approximation of the continuous transform. [PDF]

open access: yesPeerJ Comput Sci, 2020
The theory of the continuous two-dimensional (2D) Fourier Transform in polar coordinates has been recently developed but no discrete counterpart exists to date.
Yao X, Baddour N.
europepmc   +3 more sources

Quantum Representations and Scaling Up Algorithms of Adaptive Sampled-Data in Log-Polar Coordinates. [PDF]

open access: yesEntropy (Basel), 2021
In log-polar coordinates, the conventional data sampling method is to sample uniformly in the log-polar radius and polar angle directions, which makes the sample at the fovea of the data denser than that of the peripheral.
Li C, Lu D, Dong H.
europepmc   +2 more sources

Galilean transformation in polar coordinates and Doppler effect

open access: yesResults in Physics, 2021
First, the derivation of the Galilean transformation in polar coordinates from the Galilean transformation in Cartesian coordinates is presented.
Shukri Klinaku
exaly   +3 more sources

Electroencephalography Enables Continuous Decoding of Hand Motion Angles in Polar Coordinates. [PDF]

open access: yesCyborg Bionic Syst
Hand movements in task space are typically represented using either Cartesian or polar coordinate systems. While Cartesian coordinates are commonly used in electroencephalography (EEG)-based brain–computer interface (BCI) studies, polar coordinates offer
Lu X   +6 more
europepmc   +2 more sources

The Effect of GeoGebra on University Students’ Understanding of Polar Coordinates

open access: yesCogent Education, 2023
This study sought to examine the impact of dynamic mathematics software, GeoGebra, on university mathematics students’ understanding of polar coordinates. A quasi-experimental design with an equivalent group of 42 participants in each group was used.
Yarhands Dissou Arthur, Raphaël Owusu
exaly   +3 more sources

Discrete Two-Dimensional Fourier Transform in Polar Coordinates Part I: Theory and Operational Rules

open access: yesMathematics, 2019
The theory of the continuous two-dimensional (2D) Fourier transform in polar coordinates has been recently developed but no discrete counterpart exists to date.
Natalie Baddour
exaly   +3 more sources

On the shape of curves that are rational in polar coordinates [PDF]

open access: yesComputer Aided Geometric Design, 2012
In this paper we provide a computational approach to the shape of curves which are rational in polar coordinates, i.e. which are defined by means of a parametrization (r(t),θ(t)) where both r(t),θ(t) are rational functions. Our study includes theoretical aspects on the shape of these curves, and algorithmic results which eventually lead to an algorithm
Juan G Alcazar
exaly   +7 more sources

Polar coordinates in Taekwondo

open access: yesRevista de Artes Marciales Asiáticas, 2016
Cristina Menescardi   +2 more
doaj   +3 more sources

Visual Field Coordinate Systems in Visual Neurophysiology [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2023
In this work, algorithms have been developed to: 1. Compare visual field coordinate data, presented in different representation systems; 2. Determine the distance in degrees between any two points in the visual field; 3.
MARCELO GATTASS, RICARDO GATTASS
doaj   +1 more source

ACCURACY ANALYSIS OF AIRCRAFT POSITIONING USING REAL RADAR AND GPS DATA [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2022
This paper presents an analysis of the accuracy of aircraft positioning using radar and GPS satellite data. In particular, this study shows the results of research on determining the position of an aircraft, as well as the range and azimuth parameters ...
Adam CIEĆKO   +3 more
doaj   +1 more source

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