Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Frank Filbir"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The greatly nonlinear diffraction of high-energy electron probes focused to subatomic diameters frustrates the direct inversion of ptychographic data sets to decipher the atomic structure. Several iterative algorithms have been proposed to y
Externí odkaz:
https://doaj.org/article/b6959a83ad5144ea86484ea58a312bf1
Autor:
Frank Filbir, Lukas Liehr
Publikováno v:
Frontiers in Applied Mathematics and Statistics, Vol 6 (2020)
In this study, we are concerned with the effect of certain linear transformations of a signal f on its phase. We are, in particular, interested in phase distortions caused by band-limiting operations. The band-limiting operators serve as a motivation
Externí odkaz:
https://doaj.org/article/e4fb34a3846442a88250f9a0eafe5441
Publikováno v:
Mathematics, Vol 8, Iss 4, p 542 (2020)
In the present paper, we propose a numerical method for the simultaneous approximation of the finite Hilbert and Hadamard transforms of a given function f, supposing to know only the samples of f at equidistant points. As reference interval we consid
Externí odkaz:
https://doaj.org/article/8f5b84032d0a486fa79cee542550b06f
Autor:
Martin Ehler, Frank Filbir
Publikováno v:
Abstract and Applied Analysis, Vol 2014 (2014)
We first determine the asymptotes of the ε-covering numbers of Hölder-Zygmund type spaces on data-defined manifolds. Secondly, a fully discrete and finite algorithmic scheme is developed providing explicit ε-coverings whose cardinality is asymptot
Externí odkaz:
https://doaj.org/article/735c4beb303542a8a08cd4f0b7d2471e
Publikováno v:
Numerical Functional Analysis and Optimization. 43:755-795
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e4774a4f4186d422a20726f68d119a
https://doi.org/10.1080/01630563.2022.2052319
https://doi.org/10.1080/01630563.2022.2052319
Publikováno v:
2021 55th Asilomar Conference on Signals, Systems, and Computers.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d08b90a92afe982fafa4321fcf987b
https://doi.org/10.1109/ieeeconf53345.2021.9723291
https://doi.org/10.1109/ieeeconf53345.2021.9723291
Publikováno v:
J. Fourier Anal. Appl. 27:31 (2021)
The angular synchronization problem of estimating a set of unknown angles from their known noisy pairwise differences arises in various applications. It can be reformulated as a optimization problem on graphs involving the graph Laplacian matrix. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a41f06cdd52a2acff1e29b5258e98699
https://doi.org/10.1007/s00041-021-09834-1
https://doi.org/10.1007/s00041-021-09834-1
Publikováno v:
2019 13th International conference on Sampling Theory and Applications (SampTA).
Driven by ptychography, we consider an extension of the phase retrieval problem from local correlation measurements with shifts of length one [1], [2], [3] to any fixed shift length. We provide an algorithm and recovery guarantees for the extended mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2490df2229dc0b6d044275c13578973
https://doi.org/10.1109/sampta45681.2019.9030967
https://doi.org/10.1109/sampta45681.2019.9030967
Publikováno v:
Handbook of Analytic-Computational Methods in Applied Mathematics ISBN: 9780429123610
Handbook of Analytic-Computational Methods in Applied Mathematics
Handbook of Analytic-Computational Methods in Applied Mathematics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdc4082688b24acbf2542ea0a9ddf31a
https://doi.org/10.1201/9780429123610-15
https://doi.org/10.1201/9780429123610-15
Autor:
Edahí Gutiérrez-Reyes, C. García-Segundo, Roberto Ortega, Augusto García-Valenzuela, Frank Filbir, Christian Buj
Publikováno v:
J. Phys. Commun. 3:085007 (2019)
In this work, we solve the problem of modeling the generation of an acoustic pulse produced by the incidence of a pulsed laser light upon an elastic material. Our concern is about the heat transport during the absorption of electromagnetic radiation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0475345e4e92c46da28e6bce8e001e7f
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=57975
https://push-zb.helmholtz-muenchen.de/frontdoor.php?source_opus=57975