Results 101 to 110 of about 26,524 (298)
Scott\u27s Pass, December, 1933
, 1933 Black and white photograph of a view of Scott\u27s Pass and Thayne\u27s Canyon above Park City, Utah, during a Wasatch Mountain Club hike in December of ...
core
, 2022 The "sente" (Latin semita, from se- (“apart”) and from the radical *mi, from meo (“to go”) has more to do with the weft, the crossroads, than with feeling or sensations.
Parrochia, Daniel
core
Extent, characteristics and policy applications of Key Biodiversity Areas
Biological Reviews, EarlyView.ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart +57 more
wiley +1 more source
Solutions of mountain pass type for double well potential systems
, 2018 This paper studies a Hamiltonian system possessing a double well potential for which the existence of multitransition heteroclinic and homoclinic solutions that are local minimizers of an associated functional is known.
Piero Montecchiari, Paul H. Rabinowitz
core +1 more source
Homoclinic orbits for a class of symmetric Hamiltonian systems
Electronic Journal of Differential Equations, 1994 of Hamiltonian systems that are symmetric with respect to independent variable (time). For the scalar case we prove existence and uniqueness of a positive homoclinic solution. For the system case we prove existence of symmetric homoclinic orbits.
Philip Korman, Alan C. Lazer
doaj
Electronic Journal of Qualitative Theory of Differential Equations, 2016 In this paper, a fourth-order boundary value problem on the half-line is considered and existence of solutions is proved using a minimization principle and the mountain pass theorem.
Mabrouk Briki +2 more
doaj +1 more source
Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade
Biological Reviews, EarlyView.ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan +2 more
wiley +1 more source
The mountain pass theorem in terms of tangencies [PDF]
his paper addresses the Mountain Pass Theorem for locally Lipschitz functions on finite-dimensional vector spaces in terms of tangencies. This reduces to the Mountain Pass Theorem of Ambrosetti and Rabinowitz in the case where the function f is definable
Đinh Sĩ Tiệp, Phạm, Tiến Sơn
core +1 more source
Biological Reviews, EarlyView.ABSTRACT Tick‐borne filarial nematodes are a complex and understudied group of parasites that rely on ticks for transmission in vertebrates. This review examines how intrinsic and extrinsic factors may influence the successful transmission of filarial nematodes in tick vectors, drawing insights from extensively studied haematophagous dipteran vector ...
Oluwaseun D. Ajileye +4 more
wiley +1 more source
Multiple solutions for semilinear elliptic boundary value problems at resonance
Electronic Journal of Differential Equations, 1995 successful in proving the existence of weak solutions for semilinear elliptic boundary value problems at resonance. One technique involves a variational approach where solutions are characterized as saddle points for a related functional.
Steve B. Robinson
doaj