Results 31 to 40 of about 9,215,429 (289)

Existence and uniqueness of solutions for a class of higher-order fractional boundary value problems with the nonlinear term satisfying some inequalities

open access: yesJournal of Inequalities and Applications, 2020
This paper focuses on a class of hider-order nonlinear fractional boundary value problems. The boundary conditions contain Riemann–Stieltjes integral and nonlocal multipoint boundary conditions.
Fang Wang, Lishan Liu, Yonghong Wu
doaj   +1 more source

Comparison of outflow boundary conditions for subsonic aeroacoustic simulations [PDF]

open access: yes, 2011
Aeroacoustics simulations require much more precise boundary conditions than classical aerodynamics. Two classes of non-reflecting boundary conditions for aeroacoustics are compared in the present work: characteristic analysis based methods and Tam and ...
H. Deniau   +8 more
core   +1 more source

Existence and uniqueness of positive solutions for a class of nonlinear fractional differential equations with mixed-type boundary value conditions [PDF]

open access: yes, 2018
In this article, we study a class of nonlinear fractional differential equations with mixed-type boundary conditions. The fractional derivatives are involved in the nonlinear term and the boundary conditions. By using the properties of the Green function,
Kong, Debin   +3 more
core   +1 more source

Boundary element methods for potential problems with nonlinear boundary conditions [PDF]

open access: yesMathematics of Computation, 2000
Galerkin boundary element methods for the solution of novel first kind Steklov–Poincaré and hypersingular operator boundary integral equations with nonlinear perturbations are investigated to solve potential type problems in two- and three-dimensional Lipschitz domains with nonlinear boundary conditions.
Mahadevan Ganesh, Olaf Steinbach
openaire   +3 more sources

Blow-Up Phenomena for Nonlinear Reaction-Diffusion Equations under Nonlinear Boundary Conditions

open access: yesJournal of Function Spaces, 2016
This paper deals with blow-up and global solutions of the following nonlinear reaction-diffusion equations under nonlinear boundary conditions: g(u)t=∇·au∇u+fu  in  Ω×0,T,  ∂u/∂n=bx,u,t  on  ∂Ω×(0,T),  u(x,0)=u0(x)>0,  in  Ω¯, where Ω⊂RN  (N≥2) is a ...
Juntang Ding
doaj   +1 more source

A convex–concave problem with a nonlinear boundary condition

open access: yesJournal of Differential Equations, 2004
Existence, nonexistence and multiplicity results are established for a semilinear elliptic equation on a bounded domain with a nonlinear boundary condition.
Garcia-Azorero, J.   +2 more
openaire   +4 more sources

Unsteady nonlinear panel method with mixed boundary conditions [PDF]

open access: yesFME Transactions, 2021
A new panel method had been developed to account for unsteady nonlinear subsonic flow. Two boundary conditions were used to solve the potential flow about complex configurations of airplanes.
Hamid Ali Anmar
doaj  

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

On delay differential equations with nonlinear boundary conditions

open access: yesBoundary Value Problems, 2005
The monotone iterative method is used to obtain sufficient conditions which guarantee that a delay differential equation with a nonlinear boundary condition has quasisolutions, extremal solutions, or a unique solution.
Jankowski Tadeusz
doaj   +2 more sources

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