Results 31 to 40 of about 76,104 (300)

Numerical Solution of the Poisson Equation in Polar Coordinates by the Method of Collocations and Least Residuals

open access: yesМоделирование и анализ информационных систем, 2015
A version of the method of collocations and least residuals is proposed for the numerical solution of the Poisson equation in polar coordinates on non-uniform grids.
E. V. Vorozhtsov, V. P. Shapeev
doaj   +1 more source

Combining Cartesian and polar coordinates in IBVS

open access: yes, 2009
Image-based visual servo (IBVS) is a simple, efficient and robust technique for vision-based control. Although technically a local method in practice it demonstrates almost global convergence.
Chaumette, F.   +5 more
core   +1 more source

Toolbox for the Computation of 2D Fourier Transforms in Polar Coordinates via Maple

open access: yesJournal of Open Research Software, 2015
The Fourier transform is one of the most useful tools in science and engineering and can be expanded to multi-dimensions and curvilinear coordinates. A toolbox of functions for the computation of two dimensional Fourier transforms in polar coordinates ...
Edem Dovlo, Natalie Baddour
doaj   +1 more source

The zonal satellite problem. III Symmetries [PDF]

open access: yesSerbian Astronomical Journal, 2002
The two-body problem associated with a force field described by a potential of the form U =Sum(k=1,n) ak/rk (r = distance between particles, ak = real parameters) is resumed from the only standpoint of symmetries.
Mioc V.
doaj   +1 more source

Do It by Yourself: An Instructional Derivation of the Laplacian Operator in Spherical Polar Coordinates

open access: yesMathematics, 2021
For scientists and engineers, the Laplacian operator is a fundamental tool that has made it possible to carry out important frontier studies involving wave propagation, potential theory, heat conduction, the distribution of stresses in a deformable solid
Ana Laura Pérez-Martínez   +2 more
doaj   +1 more source

Leg Locomotion Adaption for Quadruped Robots with Ground Compliance Estimation

open access: yesApplied Bionics and Biomechanics, 2020
Locomotion control for quadruped robots is commonly applied on rigid terrains with modelled contact dynamics. However, the robot traversing different terrains is more important for real application.
Songyuan Zhang, Hongji Zhang, Yili Fu
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Data Sets for "Generation of Fractals using Polar Coordinates"

open access: yes, 2021
Data Sets for "Generation of Fractals using Polar ...
Serguei Charonov (11066322)
core   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

open access: yesFEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes   +4 more
wiley   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

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