Results 141 to 150 of about 676,988 (164)

Clinical Metadata-Guided Limited-Angle CT Image Reconstruction. [PDF]

IEEE Trans Med Imaging
Shi Y, Fan S, Fang C, Han S, Li H, Zhou L, Morovati B, Wang D, Yu H.   +8 more
europepmc   +1 more source

One-Step Material Decomposition Using Spectral Diffusion Posterior Sampling in Sparse-View Dual-Layer CT. [PDF]

Proc SPIE Int Soc Opt Eng
Fan Y, Jiang X, Liu Z, Gang GJ, Stayman JW.   +4 more
europepmc   +1 more source

Blind single image restoration for ring-array photoacoustic tomography system via physics-aided unsupervised learning. [PDF]

Photoacoustics
Dong W, Luo G, Han X, Zhu C, Liu S, Tian C.   +5 more
europepmc   +1 more source

A Triangular-Matrix-Based Spectral Encoding Method for Broadband Filtering and Reconstruction-Based Spectral Measurement. [PDF]

Sensors (Basel)
Yue P, Wang X.
europepmc   +1 more source

On well-posedness, regularity and ill-posedness for the nonlinear fourth-order Schrödinger equation

Bulletin of the Belgian Mathematical Society - Simon Stevin, 2018
International audienceWe prove the local well-posedness for the nonlinear fourth-order Schrödinger equation (NL4S) in Sobolev spaces. We also study the regularity of solutions in the sub-critical case.
Van Duong Dinh
exaly   +5 more sources

Ill-posedness in modeling mixed sediment river morphodynamics

Advances in Water Resources, 2018
In this paper we analyze the Hirano active layer model used in mixed sediment river morphodynamics concerning its ill-posedness. Ill-posedness causes the solution to be unstable to short-wave perturbations.
Ir A Astrid Blom, Guglielmo Stecca, Victor Chavarrias   +2 more
exaly   +3 more sources

Sharp well-posedness and ill-posedness results for a quadratic non-linear Schrödinger equation [PDF]

Journal of Functional Analysis, 2006
We establish that the quadratic non-linear Schrödinger equation iut+uxx=u2,where u:R×R→C, is locally well-posed in Hs(R) when s⩾-1 and ill-posed when s-34.
Terence Tao, Ioan Bejenaru
exaly   +2 more sources

On the ill-posedness of the Gardner equation [PDF]

Journal of Mathematical Analysis and Applications, 2012
We present ill-posedness results for the initial value problem (IVP) for the Gardner equation. We measure the regularity of the Cauchy problem in the classical Sobolev spaces Hs, and show the critical Sobolev index under which the local well-posedness of
Miguel A Alejo
exaly   +2 more sources

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Ill-posedness of a multidimensional chemotaxis system in the critical Besov spaces

Journal of Mathematical Analysis and Applications, 2022
Weiliang Xiao, Xiang Fei
exaly  

Non existence and strong ill-posedness in and Sobolev spaces for SQG

Advances in Mathematics, 2022
Diego Cordoba
exaly