Zobrazeno 1 - 10
of 6 314
pro vyhledávání: '"Löscher, A."'
We consider a space-time finite element method for the numerical solution of a distributed tracking-type optimal control problem subject to the heat equation with state constraints. The cost or regularization term is formulated in an anisotropic Sobo
Externí odkaz:
http://arxiv.org/abs/2410.06021
Autor:
Ohrt, Alexander Holm, Nagy, Olivér, Löscher, Robin, Saraceno, Clara J., Zhou, Binbin, Jepsen, Peter Uhd
Publikováno v:
Optics Letters Vol. 49, Issue 18, pp. 5220-5223 (2024
A novel balanced air-biased coherent detection scheme for capturing ultrabroadband terahertz (THz) waveforms is implemented. The balanced detection scheme allows for coherent detection at the full repetition rate of the laser system without requiring
Externí odkaz:
http://arxiv.org/abs/2409.18746
We consider a distributed optimal control problem subject to a parabolic evolution equation as constraint. The control will be considered in the energy norm of the anisotropic Sobolev space $[H_{0;,0}^{1,1/2}(Q)]^\ast$, such that the state equation o
Externí odkaz:
http://arxiv.org/abs/2404.10350
We propose, analyze, and test new robust iterative solvers for systems of linear algebraic equations arising from the space-time finite element discretization of reduced optimality systems defining the approximate solution of hyperbolic distributed,
Externí odkaz:
http://arxiv.org/abs/2404.03756
In this paper, we analyze the discrete inf-sup condition and related error estimates for a modified Hilbert transformation as used in the space-time discretization of time-dependent partial differential equations. It turns out that the stability cons
Externí odkaz:
http://arxiv.org/abs/2402.08291
We propose, analyze, and test new iterative solvers for large-scale systems of linear algebraic equations arising from the finite element discretization of reduced optimality systems defining the finite element approximations to the solution of ellip
Externí odkaz:
http://arxiv.org/abs/2312.12282
In this paper, we recast the variational formulation corresponding to the single layer boundary integral operator $\operatorname{V}$ for the wave equation as a minimization problem in $L^2(\Sigma)$, where $\Sigma := \partial \Omega \times (0,T)$ is t
Externí odkaz:
http://arxiv.org/abs/2312.12547
We consider the numerical solution of an abstract operator equation $Bu=f$ by using a least-squares approach. We assume that $B: X \to Y^*$ is an isomorphism, and that $A : Y \to Y^*$ implies a norm in $Y$, where $X$ and $Y$ are Hilbert spaces. The m
Externí odkaz:
http://arxiv.org/abs/2309.14300
Autor:
Löscher, Robin, Moreno, Victor, Adamou, Dionysis, Kesim, Denizhan K., Schroeder, Malte C., Clerici, Matteo, Wolf, Jean-Pierre, Saraceno, Clara J.
Publikováno v:
APL Photonics 8, 111303 (2023)
Filamentation has extensively been explored and is well understood at repetition rates <1 kHz due to the typical availability of multi-mJ laser systems at a moderate average power. The advent of high-power Yb-lasers opened new possibilities for filam
Externí odkaz:
http://arxiv.org/abs/2309.03636
Autor:
S. I. Cantarero, E. Flores, H. Allbrook, P. Aguayo, C. A. Vargas, J. E. Tamanaha, J. B. C. Scholz, L. T. Bach, C. R. Löscher, U. Riebesell, B. Rajagopalan, N. Dildar, J. Sepúlveda
Publikováno v:
Biogeosciences, Vol 21, Pp 3927-3958 (2024)
Lipid remodeling, the modification of cell membrane chemistry via structural rearrangements within the lipid pool of an organism, is a common physiological response amongst all domains of life to alleviate environmental stress and maintain cellular h
Externí odkaz:
https://doaj.org/article/75377025f0a64a2b95c6e8dc6b5acf52
