Results 231 to 240 of about 194,801 (292)

WF-PINNs: solving forward and inverse problems of burgers equation with steep gradients using weak-form physics-informed neural networks. [PDF]

Sci Rep
Wang X, Yi S, Gu H, Xu J, Xu W.
europepmc   +1 more source

Giant right atrial Myxoma associated with acute coronary syndrome. [PDF]

Oxf Med Case Reports
Hibatouallah H, Mehssani Z, Sayah R, Fellat R, Fellat N.   +4 more
europepmc   +1 more source

Prevalence of Electrocardiographic Abnormalities in Patients with Acute Pulmonary Embolism: A Systematic Review and Meta-Analysis. [PDF]

J Clin Med
Krintratun S, Srichuachom W, Wongtanasarasin W.   +2 more
europepmc   +1 more source

Fatal Rapidly Progressive Encephalopathy Mimicking Depression: A Diagnostic Dilemma of Suspected Seronegative Autoimmune Encephalitis. [PDF]

Cureus
Tanaka Y.
europepmc   +1 more source

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Full wave-field reflection coefficient inversion

The Journal of the Acoustical Society of America, 2007
This paper develops a Bayesian inversion for recovering multilayer geoacoustic (velocity, density, attenuation) profiles from a full wave-field (spherical-wave) seabed reflection response. The reflection data originate from acoustic time series windowed for a single bottom interaction, which are processed to yield reflection coefficient data as a ...
Jan, Dettmer, Stan E, Dosso, Charles W, Holland   +2 more
openaire   +4 more sources

Deep-Learning Schemes for Full-Wave Nonlinear Inverse Scattering Problems

IEEE Transactions on Geoscience and Remote Sensing, 2019
This paper is devoted to solving a full-wave inverse scattering problem (ISP), which is aimed at retrieving permittivities of dielectric scatterers from the knowledge of measured scattering data. ISPs are highly nonlinear due to multiple scattering, and iterative algorithms with regularizations are often used to solve such problems.
Zhun Wei, Xudong Chen
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Full Wave Traveltime Inversion

81st EAGE Conference and Exhibition 2019, 2019
Summary Full waveform inversion (FWI) is a strongly non-linearity optimization problem, which suffers from the cycle skipping when the seismic data lack low-frequency components. In this abstract, we propose a wave-equation based full wave travetime inversion method to provide a good initial velocity model for the conventional FWI, which we call it as “
Y. Hu, L. Han, P. Zhang, Y. Yin
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Layer-based oriented full wave inversion

54th EAEG Meeting, 1992
We present a 3-D inverse method for wave propagation in horizontally layered elastic isotropic media. The direct modeling uses a Hankel transform in the horizontal direction. We have previously introduced in the inversion problem a parameter reducing formulation based on a layered medium assumption (Jurado et x1,1991). In this paper we present a travel-
F. Jurado, V. Richard, M. Cuer
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