Results 21 to 30 of about 8,405,278 (297)

Unmet basic needs negatively affect health-related quality of life in people aging with HIV: results from the Positive Spaces, Healthy Places study

open access: yesBMC Public Health, 2018
Background Basic needs (e.g., food security and stable housing) are important determinants of health and well-being, yet their impact on health-related quality of life (HRQoL) in the context of HIV and aging has not been systematically investigated ...
Phan Sok   +14 more
doaj   +1 more source

On Positive Solutions of the Heat Equation [PDF]

open access: yesNagoya Mathematical Journal, 1967
Consider the positive and twice continuously differentiable solutions u of the heat equationin an open t-strip Ω = Rn×(0,T) for some T>0, where Rn is the n-dimensional Euclidean space.In this note, we prove a theorem of Fatou type on u and, as its application, the uniqueness theorem for the Cauchy problem of ( 1 ).
openaire   +2 more sources

Positive solutions for nonparametric anisotropic singular solutions [PDF]

open access: yesOpuscula Mathematica
We consider an elliptic equation driven by a nonlinear, nonhomogeneous differential operator with nonstandard growth. The reaction has the combined effects of a singular term and of a "superlinear" perturbation.
Nikolaos S. Papageorgiou   +2 more
doaj   +1 more source

Normalized solutions to the Schrödinger systems with double critical growth and weakly attractive potentials

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this paper, we look for solutions to the following critical Schrödinger system $$\begin{cases} -\Delta u+(V_1+\lambda_1)u=|u|^{2^*-2}u+|u|^{p_1-2}u+\beta r_1|u|^{r_1-2}u|v|^{r_2}&{\rm in}\ \mathbb{R}^N,\\ -\Delta v+(V_2+\lambda_2)v=|v|^{2^*-2}v+|v ...
Lei Long, Xiaojing Feng
doaj   +1 more source

A POSITIVE SOLUTION FOR A NONLOCAL SCHRÖDINGER EQUATION [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2014
AbstractWe provide an existence result of radially symmetric, positive, classical solutions for a nonlinear Schrödinger equation driven by the infinitesimal generator of a rotationally invariant Lévy process.
Zhang, Yongchao, Zhu, Gaosheng
openaire   +3 more sources

Positive solutions for parametric (p(z),q(z))-equations

open access: yesOpen Mathematics, 2020
We consider a parametric elliptic equation driven by the anisotropic (p,q)(p,q)-Laplacian. The reaction is superlinear. We prove a “bifurcation-type” theorem describing the change in the set of positive solutions as the parameter λ\lambda moves in ℝ+=(0,
Gasiński Leszek   +2 more
doaj   +1 more source

On the positive solutions of the Matukuma equation [PDF]

open access: yesDuke Mathematical Journal, 1993
The author proves that for \(1< p0\). This completes the results obtained before by \textit{Y. Li} and \textit{W.-M. Ni} [Arch. Ration. Mech. Anal. 108, No. 2, 175-194 (1989; Zbl 0705.35039); ibid. 118, No. 3, 223-243 (1992; Zbl 0764.35014)].
openaire   +5 more sources

On the Positive Operator Solutions to an Operator Equation [PDF]

open access: yesISRN Mathematical Analysis, 2013
The necessary conditions and the sufficient condition for the existence of positive operator solutions to the operator equation Xs+A*X-tA=Q are established. An iterative method for obtaining the positive operator solutions is proposed.
Yang, Kai-Fan   +2 more
openaire   +1 more source

Nature positive farm dams

open access: yesAgricultural Water Management
Farm dams are a ubiquitous feature in agricultural landscapes worldwide, functioning as a major source of water for livestock or crop irrigation. Their number is increasing rapidly, often dominating the cumulative surface area of inland waters. Unmanaged
K.U.D.N. Hansani   +3 more
doaj   +1 more source

Promise and pitfalls: Variable performance of AI-assisted passive acoustic monitoring of birds and frogs using BirdNET and VicFrogNET

open access: yesEcological Informatics
Effective conservation relies on accurate data on species distributions and their change over time. Recent advances in low-cost acoustic sensors and artificial intelligence (AI) have transformed ecoacoustics into a scalable tool for automated, large ...
Kristian Bell   +3 more
doaj   +1 more source

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