Results 11 to 20 of about 3,662,481 (292)

Multiple Solutions of Singular Perturbation Problems [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 1972
Under certain conditions on g(x, u) we establish the existence and asymptotic behavior for small ε > 0 of multiple asymptotic solutions of the nonlinear boundary value problem εu" + u’ - g(x,u) = 0, 0 < x < 1, u’(0) - au(0)= A ≥ 0, a > 0, u’(1) + bu(
Cohen, Donald S.
core   +5 more sources

A Quasi-Oppositional Heap-Based Optimization Technique for Power Flow Analysis by Considering Large Scale Photovoltaic Generator

open access: yesEnergies, 2021
Load flow analysis is an essential tool for the reliable planning and operation of interconnected power systems. The constant increase in power demand, apart from the increased intermittency in power generation due to renewable energy sources without ...
Vedik Basetti   +5 more
doaj   +1 more source

CNV Radar: an improved method for somatic copy number alteration characterization in oncology

open access: yesBMC Bioinformatics, 2020
Background Cancer associated copy number variation (CNV) events provide important information for identifying patient subgroups and suggesting treatment strategies.
David Soong   +15 more
doaj   +1 more source

Multiple solutions of the quasirelativistic Choquard equation [PDF]

open access: yes, 2012
We prove existence of multiple solutions to the quasirelativistic Choquard equation with a scalar ...
Adams R. A.   +7 more
core   +2 more sources

Multiple solutions and periodic oscillations in nonlinear diffusion processes [PDF]

open access: yes, 1973
We study the oscillatory stationary states in the temperature and concentration fields occurring in tubular chemical reactors. Singular perturbation and multitime scale procedures are combined formally to clearly and simply reveal the mechanism ...
Cohen, Donald S.
core   +1 more source

Multiple solutions of nonlinear boundary value problems with oscillatory solutions

open access: yesMathematical Modelling and Analysis, 2006
We consider two second order autonomous differential equations with critical points, which allow the detection of an exact number of solutions to the Dirichlet boundary value problem.
S. Ogorodnikova, F. Sadyrbaev
doaj   +1 more source

On double phase Kirchhoff problems with singular nonlinearity

open access: yesAdvances in Nonlinear Analysis, 2023
In this paper, we study multiplicity results for double phase problems of Kirchhoff type with right-hand sides that include a parametric singular term and a nonlinear term of subcritical growth.
Arora Rakesh   +3 more
doaj   +1 more source

Multiple boundary peak solutions for some singularly perturbed Neumann problems [PDF]

open access: yes, 2000
We consider the problem \left \{ \begin{array}{rcl} \varepsilon^2 \Delta u - u + f(u) = 0 & \mbox{ in }& \ \Omega\\ u > 0 \ \mbox{ in} \ \Omega, \ \frac{\partial u}{\partial \nu} = 0 & \mbox{ on }& \ \partial\Omega, \end{array} \right. where \
Gui, C, Wei, J, Winter, M
core   +1 more source

Defects-controlled ZnO Nanorods with High Aspect Ratio for Ethanol Detection

open access: yesInternational Journal of Electrochemical Science, 2013
A simple method to simultaneously control the aspect ratios and defects in vertically grown ZnO nanorods arrays on Si substrate was demonstrated in this work.
Noor J. Ridha   +3 more
doaj   +1 more source

Multiple normalized solutions for quasi-linear Schr\"odinger equations [PDF]

open access: yes, 2015
In this paper we prove the existence of two solutions having a prescribed $L^2$-norm for a quasi-linear Schr\"odinger equation. One of these solutions is a mountain pass solution relative to a constraint and the other one a minimum either local or global.
Jeanjean, Louis   +2 more
core   +4 more sources

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