Results 131 to 140 of about 850,462 (296)

Gluing approximate solutions of minimum type on the Nehari manifold

open access: yesElectronic Journal of Differential Equations, 2001
In the last decade or so, variational gluing methods have been widely used to construct homoclinic and heteroclinic type solutions of nonlinear elliptic equations and Hamiltonian systems.
Yanyan Li, Zhi-Qiang Wang
doaj  

Max-Min characterization of the mountain pass energy level for a class of variational problems

open access: yes, 2010
We prove the existence of a critical point at the mountain pass energy level for a general class of variational problems. We also provide a Max-Min characterization of the mountain pass energy level.
Visciglia, Nicola   +4 more
core   +1 more source

Taxon‐dependent multisite species turnover in fragmented habitats: comparing zeta diversity across birds, butterflies, and cursorial hunting spiders

open access: yesEcography, EarlyView.
Habitat fragmentation alters species diversity and reshapes community composition. However, conventional pairwise approaches to compositional variation (i.e. beta diversity metrics) do not explicitly characterize how species sharing or turnover change with the number of habitat patches.
Shirui Yu   +11 more
wiley   +1 more source

Environmental Statecraft, Fragmented Authoritarianism, and Technocratic Governance: The Structure and Agency of China's Local Environmental Politics

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Local environmental politics in China is often said to be dominated by state‐controlled modes of multi‐level governance. However, top‐down governance is embedded within and transformed by local politics, adding complexity to governance practices and environmental outcomes.
Minsi Liu, Kevin Lo
wiley   +1 more source

Existence of solitons for discrete nonlinear Schrodinger equations

open access: yesElectronic Journal of Differential Equations, 2016
By using the Mountain Pass Lemma, we establish sufficient conditions for the existence of solitons for the discrete nonlinear Schrodinger equations.
Haiping Shi, Yuanbiao Zhang
doaj  

Forage chemical composition drives early metabolic shifts in ponies fed different haylages

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background Rapid changes between feeds can cause dysbiosis and colic in horses. The metabolic consequences of transitioning between haylages (HY) are currently unknown. Objectives To characterise urinary and faecal metabonomics in ponies transitioned between HY varying in botanical composition and physiological age and to evaluate the speed of
M. J. S. Moore‐Colyer   +2 more
wiley   +1 more source

Existence of nontrivial solutions for a class of elliptic systems

open access: yesElectronic Journal of Differential Equations, 2013
Using a version of the generalized mountain pass theorem, we obtain the existence of nontrivial solutions for a class of superquadratic elliptic systems.
Chun Li, Zeng-Qi Ou, Chun-Lei Tang
doaj  

Silverton and Red Mountain Pass slides [05]

open access: yes, 1955
Black and white photograph from Edward La Chapelle\u27s tour of Colorado avalanche area in March of 1955. This photo shows Precious Metals Gulch and the road between Silverton and Red Mountain Pass.

core  

“You just want to re‐open our biggest wounds, don't you?”: Homeplace ethnography as (polluted) environmental method

open access: yesFeminist Anthropology, EarlyView.
Abstract When I was 12, my family told me a story about their community falling apart and coming together, a time when someone tried putting a nuclear facility in their (our?) hometown. Since we moved when I was too young to remember, the story had little significance until I embarked on a “hometown” ethnographic journey for my dissertation.
Chandler L. Classen
wiley   +1 more source

Multiplicity of solutions for non-homogeneous Neumann problems in Orlicz-Sobolev spaces

open access: yesElectronic Journal of Differential Equations, 2017
This article concerns the existence of non-trivial weak solutions for a class of non-homogeneous Neumann problems. The approach is through variational methods and critical point theory in Orlicz-Sobolev spaces.
Shapour Heidarkhani   +4 more
doaj  

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