Results 11 to 20 of about 190,435 (331)

Learning to use Cartesian coordinate systems to solve physics problems: the case of ‘movability’

open access: hybridEuropean Journal of Physics, 2020
Abstract In this paper, we show that introductory physics students may initially conceptualise Cartesian coordinate systems as being fixed in a standard orientation. Giving consideration to the role that experiences of variation play in learning, we also present an example of how this learning challenge can be effectively addressed ...
Trevor Volkwyn   +3 more
openalex   +4 more sources

Conversion calculation method of multivariate integrals

open access: yesAIMS Mathematics, 2021
The new schemes of calculation of double integrals and triple integrals are proposed in this paper. The formulas in which the double integral is converted into a line integral with respect to the arc length, and the triple integral is converted into a ...
Rong-jian Ning, Xiao-yan Liu, Zhi Liu
doaj   +1 more source

On superintegrable systems separable in Cartesian coordinates [PDF]

open access: yesPhysics Letters A, 2018
We continue the study of superintegrable systems of Thompson's type separable in Cartesian coordinates. An additional integral of motion for these systems is the polynomial in momenta of N-th order which is a linear function of angle variables and the polynomial in action variables.
Yu.A. Grigoriev, A.V. Tsiganov
openaire   +3 more sources

A Novel All-Weather Method to Determine Deflection of the Vertical by Combining 3D Laser Tracking Free-Fall and Multi-GNSS Baselines

open access: yesRemote Sensing, 2022
The bright stars in the clear night sky with weak background lights should be observed in the traditional deflection of the vertical (DOV) measurement so that the DOV cannot be observed under all-weather conditions, which limits its wide applications. An
Xin Jin   +4 more
doaj   +1 more source

Classical Superintegrable Systems in a Magnetic Field that Separate in Cartesian Coordinates [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2020
We consider superintegrability in classical mechanics in the presence of magnetic fields. We focus on three-dimensional systems which are separable in Cartesian coordinates. We construct all possible minimally and maximally superintegrable systems in this class with additional integrals quadratic in the momenta.
Antonella Marchesiello, Libor Šnobl
openaire   +3 more sources

Visually Enhanced Parallel Coordinates Plot With Two-Dimensional Kernel Density Scatter Plots

open access: yesIEEE Access, 2023
Parallel coordinates plots are popular tools for high-dimensional data visualization. To alleviate the difficulties caused by the inherent defects that arise when the dimensions are increased, this study attached two-dimensional kernel density scatter ...
Jia Liu   +7 more
doaj   +1 more source

To the question of coordinate system choice within composition of the spatial generalized MIMO radar ambiguity function [PDF]

open access: yesITM Web of Conferences, 2019
The issue of the choice of spatial coordinate system which is suitable to physical sense of the radar concept is explored on the basis of the derivation of spatial generalized ambiguity function for MIMO antenna system and of its cross-section analysis ...
Vodolazov Rodion   +2 more
doaj   +1 more source

Calculation of Angular Coordinates for the Control System of a Two-Link Industrial Robot Manipulator

open access: yesAdvanced Engineering Research, 2023
Introduction. One of the tasks of two-link manipulators of industrial robots that move the end-effector along complex trajectories (e.g., robot welder) is associated with the need for careful programming of their movement.
S. P. Glushko
doaj   +1 more source

How to construct a coordinate representation of a Hamiltonian operator on a torus [PDF]

open access: yes, 1995
The dynamical system of a point particle constrained on a torus is quantized \`a la Dirac with two kinds of coordinate systems respectively; the Cartesian and toric coordinate systems.
Ishikawa, S.   +3 more
core   +2 more sources

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