Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 30 June 2020Accepted: 2021Published online: 20 September 2021Keywordsinverse problems, PDE-constrained optimization, extended sources, full waveform inversion, trace estimation, low-rank minimizationAMS Subject Headings86A22, 86A15, 65M32, 65N22, 35Q86, 35R30Publication D...

~~~~~~Summary ~difference between the total field P and the incident field Po. Go is the Green's function associated with a point source in a homo-The multidimensional inverse scattering problem for an acous-geneous medium. U,(.) a [c 2 /c 2 (X)]-1 and U,(z) a ln[p(_)/po] tic medium is considered within the homogeneous background can be termed the "velocity scattering potential" and the "den-Bo...

The method of simultaneous PP-PS inversion has recently been developed and tested on the 3-D Blackfoot seismic data set. This paper shows the application of this method on 3C-2D seismic data from Pikes Peak oilfield. The inversion was accomplished with a newly installed inversion module in ProMAX. After careful prestack processing, five limitedoffset stacked sections for each of the vertical an...

A novel pulse sequence that enables simultaneous acquisition of T1-weighted (T1W) and T2-weighted (T2W) images is presented. In this new technique, the inversion recovery (IR) pulse of conventional fast inversion recovery (Fast IR) is replaced with a pulse train that consists of a fast spin echo (FSE) and 180 (y) +90 (x) for driven inversion (DI). By using a shorter TI and independent k-space o...

We report the first atomistic level description of the handedness inversion mechanism for helical arylamide foldamers. The key process in the handedness inversion is the simultaneous unfolding and folding of two adjacent aryl-aryl linkages, propagating from a helix terminus along the strand. Intermediates along the inversion pathway have a common feature - a single unfolded aryl-aryl linkage (t...

More than three decades the implementation of iterative methods for the simultaneous inclusion of polynomial zeros in circular complex interval arithmetic is carried out using the exact inversion of disks. Based on theoretical analysis and numerical examples, we show that the centered inversion gives smaller inclusion disks. This surprising result is the consequence of better convergence of the...