Results 81 to 90 of about 259,447 (315)

An Analysis of Elusive Relationships in Floating Zone Growth Using Data Mining Techniques

Advanced Theory and Simulations, EarlyView.
Ultra‐pure silicon single‐crystals can be grown by the Floating Zone (FZ) method. This study investigates intricate relationships between process stability measures and multiple growth parameters by applying data mining techniques on FZ simulations. Regression Trees identified multivariate relationships that help explaining complex interactions between
Lucas Vieira, Robert Menzel, Martin Holena, Natasha Dropka   +3 more
wiley   +1 more source

Laplace operator based multi-channel image filters learning

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
Learning an image filter from a pair of images composed of an original image and its filtered version has attracted increasing attention in the image processing region.
Yantao LIU, Meng LIU, Bin LIU, Jingang SUN, Xiuping LIU   +4 more
doaj   +1 more source

Laplace operators on the cone of Radon measures

Journal of Functional Analysis, 2015
We consider the infinite-dimensional Lie group $\mathfrak G$ which is the semidirect product of the group of compactly supported diffeomorphisms of a Riemannian manifold $X$ and the commutative multiplicative group of functions on $X$. The group $\mathfrak G$ naturally acts on the space $\mathbb M(X)$ of Radon measures on $X$. We would like to define a
Anatoly Vershik, Anatoly Vershik, Yuri Kondratiev, Eugene Lytvynov   +3 more
openaire   +5 more sources

A Model of Epigenetic Inheritance Accounts for Unexpected Adaptation to Unforeseen Challenges

Advanced Science, EarlyView.
A general model of inheriting changes that are acquired during the lifetime of individuals demonstrates tremendous benefits to the population, including escape from extinction in changing environments. Contrasting the model with experimental data shows that inheritance of acquired changes enables rapid adaptation to unforeseen challenges, and accounts ...
Dino Osmanović, Yitzhak Rabin, Yoav Soen   +2 more
wiley   +1 more source

An immersed boundary vector potential‐vorticity meshless solver of the incompressible Navier–Stokes equation

International Journal for Numerical Methods in Fluids, Volume 95, Issue 1, Page 143-175, January 2023., 2023
We present a new strong‐form meshless solver combined with the boundary condition‐enforced immersed boundary method for the numerical solution of the nonstationary, incompressible, viscous Navier–Stokes equations in their stream function‐vorticity (in 2D) and vector potential‐vorticity (in 3D) formulation.
George C. Bourantas, Benjamin F. Zwick, Theo Philippe Lavier, Vassilios C. Loukopoulos, Athanassios A. Dimas, Adam Wittek, Karol Miller   +6 more
wiley   +1 more source

On localisation of eigenfunctions of the Laplace operator

EMS Surveys in Mathematical Sciences
We prove (i) a simple sufficient geometric condition for localisation of a sequence of first Dirichlet eigenfunctions provided the corresponding Dirichlet Laplacians satisfy a uniform Hardy inequality and (ii) localisation of a sequence of first Dirichlet eigenfunctions for a wide class of elongating horn-shaped domains.
Michiel van den Berg, Dorin Bucur
openaire   +3 more sources

The Laplace operator on the Sierpinski gasket with Robin boundary conditions [PDF]

arXiv, 2015
We study the Laplace operator on the Sierpinski gasket with nonlinear Robin boundary conditions. We show that for certain Robin boundary conditions the Laplace operator generates a positive, order preserving, $L^\infty$-contractive semigroup which is sandwiched (in the sense of domination) between the semigroups generated by the Dirichlet-Laplace ...
arxiv  

2D Metalorganic Ferromagnets

Advanced Science, EarlyView.
The single‐layered 2D metalorganic coordination network Ni‐TCNE, made from Ni atoms and tetracyanoethylene molecules on a gold surface, is established as a ferromagnet with a high magnetic remanence and coercive field. Its Curie temperature is between 10 and 20 kelvin.
Egzona Isufi Neziri, Céline Hensky, Hien Quy Le, Diego Radillo Ochoa, Aleksandra Cebrat, Manfred Parschau, Karl‐Heinz Ernst, Christian Wäckerlin   +7 more
wiley   +1 more source

Optimal control for cooperative systems involving fractional Laplace operators

Journal of Inequalities and Applications, 2021
In this work, the elliptic 2 × 2 $2\times 2$ cooperative systems involving fractional Laplace operators are studied. Due to the nonlocality of the fractional Laplace operator, we reformulate the problem into a local problem by an extension problem. Then,
H. M. Serag, Abd-Allah Hyder, M. El-Badawy   +2 more
doaj   +1 more source

p-Laplace Operator and Diameter of Manifolds [PDF]

Annals of Global Analysis and Geometry, 2005
Let $\var$ be a compact Riemannian manifold without boundary. In this paper, we consider the first nonzero eigenvalue of the $p$-Laplacian $\lap$ and we prove that the limit of $\sqrt[p]{\lap}$ when $p\rightarrow\infty$ is $2/d(M)$ where $d(M)$ is the diameter of $M$. Moreover if $\var$ is an oriented compact hypersurface of the Euclidean space $\R$ or
openaire   +4 more sources