Results 51 to 60 of about 2,945,859 (241)
, 2018 We consider a nonlinear elliptic problem driven by the Dirichlet p-Laplacian and a reaction term which depends also on the gradient (convection). No growth condition is imposed on the reaction term f (z, ·, y).
Nikolaos S. Papageorgiou +2 more
semanticscholar +1 more source
MathematicsIn this note we provide an overview of some existence (with sign information) and regularity results for differential equations, in which the method of sub and supersolutions plays an important role.
Giuseppina Barletta
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THE ABUNDANCE OF HELIUM AND STELLAR PULSATION
Odessa Astronomical Publications, 2017 Radial gradient of relative amplitude of the light variation FV for galactic classical Cepheids is found. The gradient has different signs for two cases: P > 8d and P < 8d. For P > 8d the gradient is negative.
V. V. Kovtyukh
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Strain-gradient elasticity and gradient-dependent plasticity with hierarchical refinement of NURBS [PDF]
Finite Elements in Analysis and Design, 2019 Higher-order strain-gradient models are relevant for engineering materials which exhibit size-dependent behaviour as observed from experiments. Typically, this class of models incorporate a length scale - related to micro-mechanical material properties - to capture size effects, remove stress singularities, or regularise an ill-posed boundary value ...
Kolo, I., Chen, L., de Borst, R.
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Scale dependence of canopy trait distributions along a tropical forest elevation gradient.
New Phytologist, 2017 Average responses of forest foliar traits to elevation are well understood, but far less is known about trait distributional responses to elevation at multiple ecological scales.
G. Asner +16 more
semanticscholar +1 more source
VELOCITY GRADIENT OF THE FLOOR EXERCISE [PDF]
Journal of Applied Sports Sciences, 2019 The methodological classification of the volume of the exercises is in the basis of the multiannual preparation in gymnastics. A number of authors (Dimitrova, 2015; Borisenko, 2000; Fisenko, 2005; Gaverdovskiy, Smolevskiy, 2014) note that for the ...
Marina Petrova, Bonka Dimitrova
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Continuous vs. Discrete Optimization of Deep Neural Networks [PDF]
arXiv, 2021 Existing analyses of optimization in deep learning are either continuous, focusing on (variants of) gradient flow, or discrete, directly treating (variants of) gradient descent. Gradient flow is amenable to theoretical analysis, but is stylized and disregards computational efficiency.
arxiv
A priori estimate for a quasilinear problem depending on the gradient
Journal of Mathematical Analysis and Applications, 2010 AbstractThe main purpose of this paper is to establish a priori estimate for positive solutions of some superlinear, quasilinear elliptic equations where the nonlinearity depends on x, u, and ∇u. Our argument does not need a non-existence result for the limit problem obtained by the usual blow-up procedure.
Lorca, Sebastian, Ubilla, Pedro
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Proton Gradients and Proton-Dependent Transport Processes in the Chloroplast [PDF]
Frontiers in Plant Science, 2016 Proton gradients are fundamental to chloroplast function. Across thylakoid membranes, the light induced -proton gradient is essential for ATP synthesis. As a result of proton pumping into the thylakoid lumen, an alkaline stromal pH develops, which is required for full activation of pH-dependent Calvin Benson cycle enzymes.
Höhner, Ricarda +3 more
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Advances in Nonlinear AnalysisIn this paper, we study coupled elliptic systems with gradient dependent right-hand sides and nonlinear boundary conditions, where the left-hand sides are driven by so-called double phase operators.
Frisch Michal Maria, Winkert Patrick
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