Results 41 to 50 of about 9,477 (197)

Parameterizing Isopycnal Mixing via Kinetic Energy Backscatter in an Eddy‐Permitting Ocean Model

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Representing mesoscale turbulence in eddy‐permitting ocean models raises challenges for climate simulations; in such models, eddies and their associated energy and transport effects are resolved either marginally or only over parts of the domain.
Matthew P. Pudig, Wenda Zhang, K. Shafer Smith, Laure Zanna   +3 more
wiley   +1 more source

On relaxation of state-constrained optimal control problem in coefficients for biharmonic equation

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2015
We study a Dirichlet optimal control problem for biharmonic equation withcontrol and state constraints. The coecient of the biharmonic operator, the weightu, we take as a control in L1(Ω).
P. I. Kogut, L. V. Voloshko
doaj   +1 more source

biharmonic equation with discontinuous nonlinearities

Electronic Journal of Differential Equations
We study the biharmonic equation with discontinuous nonlinearity and homogeneous Dirichlet type boundary conditions $$\displaylines{ \Delta^2u=H(u-a)q(u) \quad \hbox{in }\Omega,\cr u=0 \quad \hbox{on }\partial\Omega,\cr \frac{\partial u}{\partial n}=0 \quad \hbox{on }\partial\Omega, }$$ where \(\Delta\) is the Laplace operator, \(a> 0\), \(H ...
Enrique Arias, Marco Calahorrano, Alfonso Castro   +2 more
openaire   +3 more sources

Durable and Crack‐Resistant Dual‐Network C─Lignin‐Based Triboelectric Materials Enabled by Multiscale Crosslinking Strategy for Gait Monitoring and Identification

Aggregate, Volume 7, Issue 2, February 2026.
This work proposed the multiscale crosslinking strategy to fabricate durable and crack‐resistant dual‐network C─lignin‐based triboelectric materials. The prepared PSGCL‐0.2 exhibited multifunctional properties, including mechanical strength, excellent cyclic stability, antibacterial properties, antioxidant activity, UV resistance, water retention ...
Boyu Du, Jiajun Zhang, Yuxin Yang, Tian Tang, Yuwen Wang, Yuxuan Xie, Xing Wang, Ting Xu, Chuanling Si   +8 more
wiley   +1 more source

Stabilization and Control for the Biharmonic Schrödinger Equation [PDF]

Applied Mathematics & Optimization, 2019
The main purpose of this paper is to show the global stabilization and exact controllability properties for a fourth order nonlinear fourth order nonlinear Schr dinger system: $$i\partial_tu +\partial_x^2u-\partial_x^4u= |u|^2u,$$ on a periodic domain $\mathbb{T}$ with internal control supported on an arbitrary sub-domain of $\mathbb{T}$.
Roberto A. Capistrano–Filho, Márcio Cavalcante   +1 more
openaire   +2 more sources

Eddy‐Induced Iron Transport Sustains the Biological Productivity in the Gulf of Alaska

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract The surface waters of the subarctic northeastern Pacific Ocean contain high concentrations of macronutrients such as phosphate and nitrate, which can potentially drive photosynthesis and biological uptake of carbon dioxide. Regional biological productivity, however, is limited by a lack of necessary micronutrients such as iron.
T. Ito, A. H. V. Timmerman, A. Bjouklund, S. I. Stanley, Y. Abe, C. T. Reinhard, J. Montoya   +6 more
wiley   +1 more source

A general approach to equivariant biharmonic maps

, 2012
In this paper we describe a 1-dimensional variational approach to the analytical construction of equivariant biharmonic maps. Our goal is to provide a direct method which enables analysts to compute directly the analytical conditions which guarantee ...
Montaldo, Stefano, Ratto, Andrea
core   +1 more source

A Novel Deep Learning Approach for TEC Map Completion Using Image Equation‐Guided Loss

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract This study introduces the Image Equation Mechanism‐Completion Generative Adversarial Network (IEM‐CGAN), a groundbreaking deep learning framework that revolutionizes the reconstruction of large‐scale global ionospheric total electron content (TEC) maps.
Qingfeng Li, Hanxian Fang, Chao Xiao, Die Duan, Hongtao Huang, Ganming Ren, Xuhui Shen   +6 more
wiley   +1 more source

Biharmonic Equations

In this note we devise and analyse well-posed variational formulations and operator theoretical methods for boundary value problems associated to the biharmonic operator. Of particular interest are Neumann type and over- and underdetermined (maximal and minimal) boundary value problems.
Pauly, Dirk, Valli, Alberto
openaire   +2 more sources

A Decompositional Approach for Two‐Dimensional, Two‐Phase, Nonlinear Inverse Stefan Problems Using the Method of Fundamental Solutions

Studies in Applied Mathematics, Volume 156, Issue 2, February 2026.
ABSTRACT In this paper, we propose a decompositional (phase‐wise split) approach to solve a two‐dimensional, two‐phase (solid and liquid, say), nonlinear inverse Stefan problem. The first step is to approximate the unknown moving boundary between the two phases and the Stefan condition on that boundary using the overspecified boundary and initial data ...
Gujji Murali Mohan Reddy, Phalguni Nanda, Michael Vynnycky   +2 more
wiley   +1 more source