Results 21 to 30 of about 345,147 (195)

Highly efficient Bayesian joint inversion for receiver-based data and its application to lithospheric structure beneath the southern Korean Peninsula [PDF]

open access: yes, 2016
With the deployment of extensive seismic arrays, systematic and efficient parameter and uncertainty estimation is of increasing importance and can provide reliable, regional models for crustal and upper-mantle structure.We present an efficient Bayesian ...
Dettmer, Jan   +3 more
core   +1 more source

Pumping of the 4.8 GHz H$_{\text{2}}$CO masers and its implications for the periodic masers in G37.55+0.20 [PDF]

open access: yes, 2014
Periodic or regular flaring of class II methanol masers in nine high mass star forming regions is now a well established phenomenon. Amongst the nine star forming regions, G37.55+0.20 is the only case at present where apart from the presence of a ...
van der Walt, D. J.
core   +3 more sources

Probabilistic performance estimators for computational chemistry methods: Systematic Improvement Probability and Ranking Probability Matrix. II. Applications

open access: yes, 2020
In the first part of this study (Paper I), we introduced the systematic improvement probability (SIP) as a tool to assess the level of improvement on absolute errors to be expected when switching between two computational chemistry methods.
Pernot, Pascal, Savin, Andreas
core   +2 more sources

Addressing viscous effects in acoustic full-waveform inversion

open access: yesGEOPHYSICS, 2018
In conventional full-waveform inversion (FWI), viscous effects are typically neglected, and this is likely to adversely affect the recovery of P-wave velocity. We have developed a strategy to mitigate viscous effects based on the use of matching filters with the aim of improving the performance of acoustic FWI.
Òscar Calderón Agudo   +4 more
openaire   +3 more sources

Superbroadcasting and classical information [PDF]

open access: yes, 2006
We address the problem of broadcasting N copies of a generic qubit state to M>N copies by estimating its direction and preparing a suitable output state according to the outcome of the estimate.
A. S. Holevo   +5 more
core   +2 more sources

A multiscattering series for impedance tomography in layered media [PDF]

open access: yes, 1999
We introduce an inversion algorithm for tomographic images of layered media. The algorithm is based on a multiscattering series expansion of the Green function that, unlike the Born series, converges unconditionally.
Borcea, Liliana, Ortiz, Michael
core   +1 more source

Three-Dimensional Inversion of the Time-Lapse Resistivity Method on the MPI Parallel Algorithm

open access: yesApplied Sciences
The resistivity method is widely used to address long-term monitoring challenges in fields such as environmental protection, ecological restoration, seawater intrusion, and geological hazard assessment.
Depeng Zhu, Youxing Yang, Lei Wen
doaj   +1 more source

A robust array geometry inversion method for a deep-towed multichannel seismic system with a complex seafloor

open access: yesFrontiers in Marine Science, 2023
Deep-towed multichannel seismic exploration technology has better applicability and more development potential when utilized to invert the geoacoustic properties of deep-sea sediment.
Jing Li   +16 more
doaj   +1 more source

Three-Dimensional Time-Lapse Joint Inversion of Resistivity and Time-Domain Induced Polarization Methods

open access: yesApplied Sciences
The resistivity method and time-domain induced polarization (TDIP) method are two branches of electrical geophysical prospecting. In recent years, researchers have implemented time-lapse resistivity inversion and time-lapse TDIP inversion based on time ...
Depeng Zhu, Huan Ma, Youxing Yang
doaj   +1 more source

4D Seismic History Matching Incorporating Unsupervised Learning

open access: yes, 2019
The work discussed and presented in this paper focuses on the history matching of reservoirs by integrating 4D seismic data into the inversion process using machine learning techniques.
Etienam, Clement
core   +1 more source

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