Results 131 to 140 of about 26,746 (306)

On the Inverse Spectral Problem for the Camassa–Holm Equation

open access: yesJournal of Functional Analysis, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Spectral calibration of exponential Lévy Models [1] [PDF]

open access: yes
We investigate the problem of calibrating an exponential Lévy model based on market prices of vanilla options. We show that this inverse problem is in general severely ill-posed and we derive exact minimax rates of convergence.
Denis Belomestny, Markus Reiß
core  

Cold Orthogonal Translation: A Psychrophilic Pyrrolysyl‐tRNA Synthetase Boosts Genetic Code Expansion in E. coli

open access: yesAdvanced Science, EarlyView.
ABSTRACT Orthogonal translation systems (OTSs) enable site‐specific incorporation of non‐canonical amino acids (ncAAs) and are central to genetic code expansion. Current engineering strategies typically rely on hyperstable aminoacyl tRNA synthetase (aaRS) scaffolds to tolerate destabilizing mutations required for substrate diversification.
Nikolaj G. Koch   +4 more
wiley   +1 more source

A progress in the inverse matrix method in QCD sum rules

open access: yesEuropean Physical Journal C: Particles and Fields
In traditional QCD sum rules, the simple hadron spectral density model of the “delta-function-type ground state + theta-function-type continuous spectrum” determines that there is no perfect parameter selection.
Zhen-Xing Zhao, Yi-Peng Xing, Run-Hui Li
doaj   +1 more source

Inverse problems in mantle convection : models, algorithms, and applications

open access: yes, 2013
textMantle convection is the principal control on the thermal and geological evolution of the earth, including the motion of the tectonic plates, which in turn influences earthquakes, tsunamis, and volcanic eruptions.
Worthen, Jennifer Anne
core  

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

open access: yesAdvanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li   +9 more
wiley   +1 more source

Unique Existence and Reconstruction of the Solution of Inverse Spectral Problem for Differential Pencil

open access: yesMathematics
In this paper, the half-inverse spectral problem for energy-dependent Sturm–Liouville problems (that is, differential pencils), defined on interval [0,π] with the potential functions p,q being a priori known on the subinterval [0,π/2], is considered.
Wei Lyu, Zhaoying Wei
doaj   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

open access: yesAdvanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown   +3 more
wiley   +1 more source

Eigenvalue problems with p-Laplacian operators

open access: yesElectronic Journal of Differential Equations, 2014
In this article, we study eigenvalue problems with the p-Laplacian operator: $$ -(|y'|^{p-2}y')'= (p-1)(\lambda\rho(x)-q(x))|y|^{p-2}y \quad \text{on } (0,\pi_{p}), $$ where p>1 and $\pi_{p}\equiv 2\pi/(p\sin(\pi/p))$.
Yan-Hsiou Cheng
doaj  

Efficient MCMC and posterior consistency for Bayesian inverse problems [PDF]

open access: yes
Many mathematical models used in science and technology often contain parameters that are not known a priori. In order to match a model to a physical phenomenon, the parameters have to be adapted on the basis of the available data.
Vollmer, Sebastian
core  

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