Results 11 to 20 of about 334,043 (330)

A New Coordinate System for Constructing Spherical Grid Systems

open access: yesApplied Sciences, 2020
In astronomy, physics, climate modeling, geoscience, planetary science, and many other disciplines, the mass of data often comes from spherical sampling.
Kin Lei, Dongxu Qi, Xiaolin Tian
doaj   +2 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

Development of a small scale cartesian coordinate farming robot with deep learning based weed detection

open access: yesJournal of Physics: Conference Series, 2021
Automated Cartesian coordinated farming is a system designed for agricultural purposes. Being one of the trends of development on automation and intelligence in the agricultural machinery, this system is able to perform certain basic elementary functions
T. Rajalakshmi   +3 more
semanticscholar   +1 more source

Cartesian coordinate control for teleoperated construction machines

open access: yesConstruction Robotics, 2021
Despite the continuous development of the hardware, most construction machines are exclusively teleoperated limiting the control to a single paradigm. The operators usually have to move different joints of the machine in a coordinated way solely relied ...
Hyung-Joo Lee, S. Brell-Çokcan
semanticscholar   +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

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