Results 71 to 80 of about 20,803 (266)
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
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
Nonlinear eigenvalues and mountain pass methods
Topological Methods in Nonlinear Analysis, 1993 The authors give a detailed account of mountain pass lemmas for \(C^ 1\) functionals \(G\) on a Hilbert space, where the admissible paths are restricted to fixed regions. A typical example for such a region is the set \(\{u\): \(u\in H\), \(F(u)\leq R\}\), where \(F\) is another \(C^ 1\) functional and \(R>0\).
Schechter, M., Tintarev, K.
openaire +3 more sources
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
Abstract and Applied Analysis, 2013 We investigate the existence and multiplicity of homoclinic orbits for second-order Hamiltonian systems with local superquadratic potential by using the Mountain Pass Theorem and the Fountain Theorem, respectively.
Ying Lv, Chun-Lei Tang
doaj +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
The Canadian Journal of Chemical Engineering, EarlyView.Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada +6 more
wiley +1 more source
Conservation Can Better Integrate Environmental Justice if We Consider People’s Needs
The Bulletin of the Ecological Society of America, EarlyView.
Beck M. Swab
wiley +1 more source
Sudan at War With Itself: Civilian Devastation in the Civil War
Conflict Resolution Quarterly, EarlyView.ABSTRACT A civil war is raging in Sudan between the Sudan Armed Forces (SAF) and the Rapid Support Forces (RSF) along with militia groups. Beginning on April 15, 2023, and continuing at least to this writing (October 15, 2025), civilian noncombatants have been subjected to bombings, beatings, torture, shootings, rape, and murder on a large scale. Since
Daniel Rothbart +3 more
wiley +1 more source