Results 181 to 190 of about 19,135,649 (331)

Quantifying community keystoneness in metacommunities under disturbance

open access: yesOikos, EarlyView.
Understanding how metacommunities respond to natural and anthropogenic disturbances is a key objective in ecology. In this study, we introduce an analytical framework to identify communities whose extirpation triggers stronger (hereafter keystone communities) or weaker (hereafter idle communities) cascading effects on extinction and colonization events
Gabriel Khattar, Pedro R. Peres-Neto
wiley   +1 more source

Nonexistence results for weighted p-Laplace equations with singular nonlinearities

open access: yesElectronic Journal of Differential Equations, 2019
In this article we present some nonexistence results concerning stable solutions to the equation $$ \hbox{div}\big(w(x)|\nabla u|^{p-2}\nabla u\big) =g(x)f(u)\quad \text{in }\mathbb{R}^N,\;p\geq 2 $$ when f(u) is either $u^{-\delta}+u^{-\gamma ...
Kaushik Bal, Prashanta Garain
doaj  

A Pragmatic Approach to Handling Censored Data Below the Lower Limit of Quantification in Pharmacokinetic Modeling

open access: yesCPT: Pharmacometrics &Systems Pharmacology, EarlyView.
ABSTRACT Proper handling of data below the lower limit of quantification (BLQ) is crucial for accurate pharmacokinetic parameter estimation. The M3 method proposed by Beal uses a likelihood‐based approach that is precise but has been reported to suffer from numerical issues in converging.
Marie Wijk   +4 more
wiley   +1 more source

The Beginning of the Fučik Spectrum for the p-Laplacian

open access: bronze, 1999
Mabel Cuesta   +2 more
openalex   +1 more source

Minimax principles for critical-point theory in applications to quasilinear boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2000
Using the variational method developed by the same author in [7], we establish the existence of solutions to the equation $-Delta_p u = f(x,u)$ with Dirichlet boundary conditions.
A. R. El Amrouss, M. Moussaoui
doaj  

A conservative numerical scheme for the multilayer shallow‐water equations on unstructured meshes

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
An energy‐conserving scheme is derived for the multilayer shallow water model, making use of the direct connection between energy conservation and the skew symmetry of the Poisson bracket for the model. A new mechanism is proposed to prevent layer interface outcropping.
Qingshan Chen
wiley   +1 more source

Global representation of extratropical cyclone precipitation and future trends in CMIP6 models

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We use a cyclone‐tracking algorithm to study precipitation produced by extratropical cyclones and identify five global hotspots of extreme precipitation: the well‐known Pacific and Atlantic storm tracks in the Northern Hemisphere and three distinct hotspots in the Southern Hemisphere, located at low latitudes to the east of the major landmasses of ...
Martin Jucker   +3 more
wiley   +1 more source

The fibering method approach for a Schrödinger-Poisson system with p-Laplacian in bounded domains

open access: yesOpen Mathematics
In this article, we study a p-Laplacian Schrödinger-Poisson system involving a parameter q≠0q\ne 0 in bounded domains. By using the Nehari manifold and the fibering method, we obtain the non-existence and multiplicity of nontrivial solutions. On one hand,
Xue Jinfeng, Wang Libo
doaj   +1 more source

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