Results 71 to 80 of about 21,227 (266)
A variant of mountain pass theorem
Differential and Integral Equations, 2013 An existence result for a critical point of mountain-pass type, where the classical Palais--Smale condition is not required, is presented. A multiple-critical-point result is then obtained. As an application, the existence of two positive classical solutions for two-point boundary-value problems, without assuming any asymptotic condition on the ...
Bonanno, Gabriele, D'Aguì, Giuseppina
openaire +2 more sources
Flourishing through adventure learning: A (semi)cautionary tale
British Educational Research Journal, EarlyView.Abstract Studies suggest that adventure learning can develop children's cognitive skills and promote social and emotional learning. However, evidence is needed as to whether the design of adventure learning—school‐based or external/residential—plays a role in that development/promotion, and whether learning gains are maintained.
Ben Willis, Sarah Reaney‐Wood
wiley +1 more source
Existence of solutions for a class of quasilinear degenerate $p(x)$-Laplace equations
Electronic Journal of Qualitative Theory of Differential Equations, 2018 We study the existence of weak solutions for a degenerate $p(x)$-Laplace equation. The main tool used is the variational method, more precisely, the Mountain Pass Theorem.
Qing-Mei Zhou, Jian-Fang Wu
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Biological Diversity, EarlyView.This study employed eDNA technology for biodiversity surveys and conducted high‐density spatiotemporal eDNA sampling to evaluate ecosystem‐scale patterns across temporal, spatial, and habitat dimensions. We identified 97 fish species from 12 orders, 29 families, and 71 genera using eDNA technology. Spatially, fish diversity indices were correlated with
Changping Jiang +5 more
wiley +1 more source
Electronic Journal of Differential Equations, 2010 In this article we consider the differential inclusion $$displaylines{ -hbox{div}(| abla u|^{p(x)-2} abla u)in partial F(x,u) quadhbox{in }Omega,cr u=0 quad hbox{on }partial Omega }$$ which involves the $p(x)$-Laplacian.
Guowei Dai
doaj
Ground-state solutions of a Hartree–Fock type system involving critical Sobolev exponent
Electronic Journal of Qualitative Theory of Differential EquationsIn this paper, ground-state solutions to a Hartree–Fock type system with a critical growth are studied. Firstly, instead of establishing the local Palais–Smale (P.-S.) condition and estimating the mountain-pass critical level, a perturbation method is ...
Xiaoli Zhu, Zushun Min
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The Existence of a Nontrivial Solution for a -Kirchhoff Type Elliptic Equation in
Abstract and Applied Analysis, 2013 Using Mountain Pass lemma, under some appropriate assumptions, we establish the existence of one nontrivial solution for a class of p-Kirchhoff-type elliptic equations in .
Zonghu Xiu
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Flight of the dragons: a global review of migration in Odonata
Biological Reviews, EarlyView.ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund +3 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study explores how sustainability is perceived and prioritized by consumers within full‐service restaurants and rural agritourism settings in Italy, examining the socio‐cultural and economic role of the HoReCa sector in promoting sustainable practices and analyzing gender and generational differences in consumer behavior.
Roberta Minazzi +3 more
wiley +1 more source
High Perturbations of a Fractional Kirchhoff Equation with Critical Nonlinearities
AxiomsThis paper concerns a fractional Kirchhoff equation with critical nonlinearities and a negative nonlocal term. In the case of high perturbations (large values of α, i.e., the parameter of a subcritical nonlinearity), existence results are obtained by the
Shengbin Yu +2 more
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