Results 71 to 80 of about 26,670 (208)

Optimal choice of Hankel-block-Hankel matrix shape in 2-D parameter estimation: the rank-one case

, 2016
Revised version.International audienceIn this paper we analyse the performance of 2-D ESPRIT method for estimating parameters of 2-D superimposed damped exponentials.
Comon, Pierre, Sahnoun, Souleymen, Usevich, Konstantin   +2 more
core   +2 more sources

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells   +8 more
wiley   +1 more source

Spin‐Orbit Photonics with Potato Starch Lenses

Advanced Optical Materials, EarlyView.
Native potato starch spherulites are introduced as volumetric optical elements that modulate both dynamic and geometric phases of light. These spherulites focus light and generate optical vortices via spin‐orbit interaction, functioning as polarization‐sensitive microlenses. Their unique radial anisotropy enables applications in vortex beam generation,
Petr Bouchal, Petr Viewegh, Petr Liška, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source

On the Determinant of a Certain Wiener-Hopf + Hankel Operator

, 2003
We establish an asymptotic formula for determinants of truncated Wiener-Hopf+Hankel operators with symbol equal to the exponential of a constant times the characteristic function of an interval.
Basor, Estelle L., Ehrhardt, Torsten, Widom, Harold   +2 more
core   +2 more sources

Experimental studies on multi‐scale data‐driven methods within the framework of structural health monitoring

Civil Engineering Design, EarlyView.
Abstract The German Research Foundation has established the priority program SPP 100+. Its subject is monitoring bridge structures in civil engineering. The data‐driven methods cluster deals with the use of measurements and their special global and local analysis methods, which complement each other in an overall multi‐scale concept in order to realize
Maximilian Rohrer, Jan Backhaus, Ulf Bestmann, Vanessa De Arriba López, Pedro Achanccaray Diaz, Markus Gerke, Carsten Könke, Armin Lenzen, Lukas Lippold, Mehdi Maboudi, Max Moeller, Carlos Luis Paz Villegas, Paul Winkler, Volkmar Zabel   +13 more
wiley   +1 more source

A New Approach to k-Jacobsthal Lucas Sequences

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
In this study, 〖CS〗_(k,n) of S_(k,n) Catalan transformation of 𝑘−Jacobsthal-Lucas sequences is defined. S_(k,n) Catalan transformation of 𝑘−Jacobsthal-Lucas S_(k,n) sequences is obtained.In addition the transformation of CS_(k,n) is written as the ...
Hakan Akkuş, Engin Özkan, Rabia Nagehan Üregen   +2 more
doaj   +1 more source

On the nuclear norm heuristic for a Hankel matrix completion problem [PDF]

Automatica, 2015
This note addresses the question if and why the nuclear norm heuristic can recover an impulse response generated by a stable single-real-pole system, if elements of the upper-triangle of the associated Hankel matrix are given. Since the setting is deterministic, theories based on stochastic assumptions for low-rank matrix recovery do not apply in the ...
Liang Dai, Kristiaan Pelckmans
openaire   +1 more source

Space‐Time Smoothness and Parsimony in Covariance Functions

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper challenges the trade off between computational efficiency and statistical accuracy within the framework of Gaussian space‐time processes. Under such a framework, the space‐time dependence is completely specified through the space‐time covariance function.
Tarik Faouzi, Emilio Porcu, Moreno Bevilacqua   +2 more
wiley   +1 more source

Flow Memory Effect on Open‐Frame Remotely Operated Vehicle Motion

Journal of Field Robotics, EarlyView.
ABSTRACT The flow memory effect is a kind of viscous force caused by acceleration between continuous phases and underwater vehicles and the development of the boundary layer near the interfacial surface. This paper establishes a 6‐degrees‐of‐freedom unsteady equation of motion describing the flow memory effect on viscous hydrodynamic loads.
Ruinan Guo, Yingfei Zan, Wenzhi Fu, Chenlei Cao, Duanfeng Han, Nan Sun   +5 more
wiley   +1 more source

Accelerating 3D radial MPnRAGE using a self‐supervised deep factor model

Magnetic Resonance in Medicine, Volume 94, Issue 3, Page 1191-1201, September 2025.
ABSTRACT Purpose To develop a self‐supervised and memory‐efficient deep learning image reconstruction method for 4D non‐Cartesian MRI with high resolution and a large parametric dimension. Methods The deep factor model (DFM) represents a parametric series of 3D multicontrast images using a neural network conditioned by the inversion time using ...
Yan Chen, Steve R. Kecskemeti, James H. Holmes, Curtis A. Corum, Nima Yaghoobi, Vincent A. Magnotta, Mathews Jacob   +6 more
wiley   +1 more source