Results 31 to 40 of about 656 (108)

Quantum coherence of Gaussian states in curved spacetime

open access: yesResults in Physics, 2019
We study quantum coherence of two-mode Gaussian states in the background of an asymptotically flat black hole. We find that quantum coherence between mode A observed by an inertial observer Alice and mode B observed by an accelerated Bob who hovers near ...
Shu-Min Wu, Hao-Sheng Zeng, Tong-Hua Liu
doaj   +1 more source

A Babu\v{s}ka-Aziz type proof of the circumradius condition

open access: yes, 2013
In this paper the error of polynomial interpolation of degree 1 on triangles is considered. The circumradius condition, which is more general than the maximum angle condition, is explained and proved by the technique given by Babu\v{s}ka-Aziz.Comment ...
Kobayashi, Kenta, Tsuchiya, Takuya
core   +1 more source

Adsorption of binary polymer mixtures with different topology on a wall

open access: yesResults in Physics, 2019
We consider a binary mixture of two polymers with different architecture, consisting of linear and cyclic chains. We study this system by performing extensive molecular dynamics computer simulations of bead-spring models, which possess the open-chain and
Francis M. Gaitho, Giuseppe Pellicane
doaj   +1 more source

Differential regulation of the Drosophila sleep homeostat by circadian and arousal inputs. [PDF]

open access: yes, 2019
One output arm of the sleep homeostat in Drosophila appears to be a group of neurons with projections to the dorsal fan-shaped body (dFB neurons) of the central complex in the brain.
Elsheikh, Ahmed   +7 more
core   +1 more source

The Quasi‐Cubic Trigonometric Cardinal Spline With Local Shape Adjustability

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
The cubic Cardinal spline curve is a fundamental tool in the field of interpolation curve design. However, the cubic Cardinal spline curve cannot adjust its shape locally through the free parameters, and it struggles to accurately represent common engineering curves such as elliptical arcs, circular arcs, and parabolic arcs.
Juncheng Li   +3 more
wiley   +1 more source

A kind of univariate improved Shepard-Euler operators

open access: yesOpen Mathematics
In this paper, a kind of univariate Shepard-Euler operators is studied by combining the known Shepard operator with the generalized Taylor polynomial as the expansion in the Euler polynomials.
Wu Ruifeng
doaj   +1 more source

Coupling efficiency of a partially coherent collimating laser from turbulent biological tissue to fiber

open access: yesResults in Physics, 2019
We propose a model of the fiber coupling efficiency for a partially coherent collimating laser beam propagating through turbulent biological tissue to fiber.
Qiyong Liang   +5 more
doaj   +1 more source

Gradient bounds for Wachspress coordinates on polytopes

open access: yes, 2013
We derive upper and lower bounds on the gradients of Wachspress coordinates defined over any simple convex d-dimensional polytope P. The bounds are in terms of a single geometric quantity h_*, which denotes the minimum distance between a vertex of P and ...
Floater, Michael   +2 more
core   +1 more source

An Analytical Approach to Solve a System of 2D Nonlinear Volterra–Fredholm Integral Equations on Nonrectangular Domains Based on Radial Basis Functions

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
We aim to introduce a numerical method to solve a system of two‐dimensional nonlinear integral equations of Volterra–Fredholm type with the second kind on nonrectangular domains. The method estimates the solutions of the system by a discrete collocation method based on radial basis functions constructed on scattered points.
Mohsen Jalalian   +3 more
wiley   +1 more source

Signature verification by geometry and image processing

open access: yesNonlinear Engineering
In this article, we present an algorithm to determine the authenticity of a signature with high probability. This study addresses the increasing need for robust and accurate methods of verifying offline signatures, which are crucial in various legal and ...
Jaber Ebaa Abdulsattar   +2 more
doaj   +1 more source

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