Results 101 to 110 of about 2,182,015 (280)
On the spectrum of the p-biharmonic operator
Electronic Journal of Differential Equations, 2002 This work is devoted to the study of the spectrum for p-biharmonic operator with an indefinite weight in a bounded domain.
Abdelouahed El Khalil +2 more
doaj
On the existence of positive solutions for an ecological model with indefinite weight
Arab Journal of Mathematical Sciences, 2016 This study concerns the existence of positive solutions for the following nonlinear boundary value problem: {−Δu=am(x)u−bu2−cupup+1−Kin Ω,u=0on ∂Ω, where Δu=div(∇u) is the Laplacian of u, while a,b,c,p,K are positive constants with p≥2 and Ω is a ...
Saleh Shakeri +2 more
doaj +1 more source
Beyond the Dichotomy of Success and Failure: Making Activism Meaningful in South Korea and France
American Anthropologist, EarlyView.ABSTRACT First deployed in the 1970s, prefiguration has recently gained traction among ethnographers of political action as a descriptor for activist practices that foreground participatory democracy, horizontality, and direct action, as seen in social movements like Occupy Wall Street. Notably, ethnographers have come to understand these prefigurative‐
Guilherme Fians, Sera Yeong Seo Park
wiley +1 more source
An existence result for a Robin problem involving $p(x)$-Kirchhoff-type equation with indefinite weight [PDF]
AUT Journal of Mathematics and ComputingThis paper discusses the existence of at least two distinct nontrivial weak solutions for a class of $p(x)$-Kirchhoff-type equation plus an indefinite potential under Robin boundary condition.
Mehdi Latifi, Mohsen Alimohammady
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Progressively Projected Newton's Method
Computer Graphics Forum, EarlyView.Abstract Newton's Method is widely used to find the solution of complex non‐linear simulation problems. To guarantee a descent direction, it is common practice to clamp the negative eigenvalues of each element Hessian prior to assembly—a strategy known as Projected Newton (PN)—but this perturbation often hinders convergence.
J. A. Fernández‐Fernández +2 more
wiley +1 more source
Eigencurves of the p-Laplacian with weights and their asymptotic behavior
Electronic Journal of Differential Equations, 2007 In this paper we study the existence of the eigencurves of the p-Laplacian with indefinite weights. We obtain also their variational formulations and asymptotic behavior.
Mohammed Hadda, Ahmed Dakkak
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Register‐Efficient Linear‐Time Evaluation in the Bernstein Basis
Computer Graphics Forum, EarlyView.Abstract We investigate the evaluation of points and derivatives of Bézier curves and surfaces on modern architectures, focusing on performance and guided by numerical error bounds. While the de Casteljau algorithm remains the reference for numerical robustness, its linear working‐set size imposes substantial register pressure on GPUs.
Gábor Valasek, Anna Lili Horváth
wiley +1 more source
Exit dynamics from organic certification in Quebec
Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.Abstract In Quebec, organic‐certification exits remained persistently high at 5% –7% annually over 2021–2025, while entries fell sharply from 10.8% to 3.4%. By 2025, exits exceeded entries for the first time, contracting the certified stock and reversing a decade of expansion.
Komla Avoumatsodo, Moustapha Thiam
wiley +1 more source
Yoruba Moral Philosophy and the Ethical Governance of Data Science Health Research in Africa
Developing World Bioethics, EarlyView.ABSTRACT Data science health research (DSHR) which encompasses genomic biobanking, algorithmic clinical prediction, large‐scale secondary use of health data, and AI‐assisted diagnostics is expanding rapidly across Africa through initiatives such as the Human Heredity and Health in Africa (H3Africa) consortium and the Data Science for Health Discovery ...
Clement Adebamowo +11 more
wiley +1 more source
Infinite semipositone problems with indefinite weight and asymptotically linear growth forcing-terms
Electronic Journal of Differential Equations, 2013 In this work, we study the existence of positive solutions to the singular problem $$displaylines{ -Delta_{p}u = lambda m(x)f(u)-u^{-alpha} quad hbox{in }Omega,cr u = 0 quad hbox{on }partial Omega, }$$ where $lambda$ is positive parameter, $Omega $
Ghasem A. Afrouzi, Saleh Shakeri
doaj