Results 141 to 150 of about 70,966 (297)

Positive solutions for superlinear elliptic equations

open access: yes, 2003
The existence of a positive, radial solution for superlinear elliptic boundary value problem in an exterior domain is proved, by the use of cone expansion fixed point ...
Robert Stańczy, Stańczy, Robert
core   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

Existence of bounded positive solutions of a nonlinear differential system

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we study the existence and nonexistence of solutions for the system $$displaylines{ frac{1}{A}(Au')'=pu^{alpha }v^{s}quad hbox{on }(0,infty ), cr frac{1}{B}(Bu')'=qu^{r}v^{eta }quad hbox{on }(0,infty ), cr Au'(0)=0,quad u(infty )=a ...
Sabrine Gontara
doaj  

Uniqueness of the Positive Solution of Δu + f(u) = 0 in an Annulus

open access: yes, 1991
We give here an extension of the recent result of Kwong (which in turn extended earlier results of Coffman and McLeod and Serrin) on the uniqueness of the positive radial solution of a semilinear elliptic equation.
L. Zhang, Man Kam Kwong, Liqun Zhang
core  

Kriging, cokriging, radial basis functions and the role of positive definiteness

open access: yes, 1992
There are at least three developments for interpolators that lead to the same functional form for the interpolator; the thin plate spline, radial basis functions and the regression method known as kriging.
Donald E. Myers, Myers, Donald E.
core   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

open access: yesAdvanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone   +11 more
wiley   +1 more source

3-D Reconstruction of Multi-object Scenes from Multiple Images [PDF]

open access: yes, 2009
Photorealistic 3-D models are used in a wide variety of applications from entertainment and games, through to simulation, training . Algorithms to automatically create such models from ordinary photographs can vastly reduce the workload and expense ...
Grum, Matthew
core  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

open access: yesAdvanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa   +3 more
wiley   +1 more source

A nonexistence result for p-Laplacian systems in a ball

open access: yesElectronic Journal of Differential Equations, 2023
Abraham" Abebe, Maya Chhetri
doaj  

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

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