Results 1 to 10 of about 2,912 (162)

Modeling angiogenesis under Robin boundary conditions [PDF]

open access: yesQuantitative Biology
In this study, we show an example of a numerical model based on the Keller–Segel system of equations to simulate angiogenesis in response to chemotaxis under Robin boundary conditions, which represent the presence of flux at the tumor.
Pablo Álvarez‐Caudevilla   +2 more
doaj   +5 more sources

The Bilaplacian with Robin Boundary Conditions [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2022
We introduce Robin boundary conditions for biharmonic operators, which are a model for elastically supported plates and are closely related to the study of spaces of traces of Sobolev functions. We study the dependence of the operator, its eigenvalues, and eigenfunctions on the Robin parameters. We show in particular that when the parameters go to plus
James Kennedy, Davide Buoso
exaly   +5 more sources

Lyapunov-type inequalities for quasilinear elliptic equations with Robin boundary condition [PDF]

open access: yesJournal of Inequalities and Applications, 2017
The aim of this study is to prove Lyapunov-type inequalities for a quasilinear elliptic equation in R 2 $\mathbb{R}^{2}$ . Also the lower bound for the first positive eigenvalue of the boundary value problem is obtained.
Ülkü Dinlemez Kantar, Tülay Özden
doaj   +2 more sources

Resonant (p,q)-equations with Robin boundary condition

open access: yesElectronic Journal of Differential Equations, 2018
We consider a nonlinear nonhomogeneous Robin problem that has the sum of a p-Laplacian and a q-Laplacian (a (p,q)-equation). The reaction term is a Caratheodory function which is resonant at $\pm\infty$ with respect to any nonprincipal variational ...
Michael E. Filippakis   +1 more
doaj   +2 more sources

Concentrating solutions of the Liouville equation with Robin boundary condition

open access: yesJournal of Differential Equations, 2012
Let \(\varepsilon >0\) small enough and \(\lambda>0\) large. Assume that \(\Omega\subset {\mathbb R}^2\) is a bounded domain with smooth boundary. The authors construct solutions to the Liouville equation \[ \Delta u+\varepsilon^2e^u=0\qquad \text{in}\;\Omega\,, \] under the Robin boundary condition \[ \frac{\partial u}{\partial\nu}+\lambda u=0\qquad ...
Erwin Maximiliano Topp Paredes   +1 more
exaly   +5 more sources

Application of a Robin boundary condition to surface waves

open access: yesFrontiers in Marine Science, 2023
Surface effects on deep-water gravity waves are investigated theoretically by the application of a Robin boundary condition with a complex Robin parameter, R=Rr+iRi.
Kai Håkon Christensen   +2 more
doaj   +1 more source

Characterization of the Mean First-Passage Time Function Subject to Advection in Annular-like Domains

open access: yesMathematics, 2023
Cell migration in a biological medium towards a blood vessel is modeled, as a random process, sucessively inside an annulus (two-dimensional domain) and an annular cylinder (three-dimensional domain).
Hélia Serrano   +1 more
doaj   +1 more source

Singularly perturbed robin type boundary value problems with discontinuous source term in geophysical fluid dynamics [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2021
Singularly perturbed robin type boundary value problems with discontinuous source terms applicable in geophysical fluid are considered. Due to the discontinuity, interior layers appear in the solution.
B.M. Abagero, G.F. Duressa, H.G. Debela
doaj   +1 more source

A Variational Formulation for Fins with Nonzero Contact Thermal Resistance at the Base

open access: yesAxioms, 2023
This paper considers the steady-state heat transfer process in a fin with a Robin boundary condition at the base (instead of the usual Dirichlet boundary condition at the base). Robin boundary condition models the effect of the thermal resistance between
Rogério Martins Saldanha da Gama   +3 more
doaj   +1 more source

No-Boundary Proposal as a Path Integral with Robin Boundary Conditions [PDF]

open access: yesPhysical Review Letters, 2019
Realising the no-boundary proposal of Hartle and Hawking as a consistent gravitational path integral has been a long-standing puzzle. In particular, it was demonstrated by Feldbrugge et al. that the sum over all universes starting from zero size results in an unstable saddle point geometry.
Di Tucci, Alice, Lehners, Jean-Luc
openaire   +4 more sources

Home - About - Disclaimer - Privacy