Results 41 to 50 of about 281,341 (190)

Inverse Scattering by the Stability Index Method

, 2001
A novel numerical method for solving inverse scattering problem with fixed-energy data is proposed. The method contains a new important concept: the stability index of the inversion problem.
Gutman, S., Ramm, A. G., Scheid, W.
core   +3 more sources

Inversion of shallow seabed structure and geoacoustic parameters with waveguide characteristic impedance based on Bayesian approach

Frontiers in Marine Science, 2023
Underwater acoustic technology is essential for ocean observation, exploration and exploitation, and its development is based on an accurate predication of underwater acoustic wave propagation.
Hanhao Zhu, Hanhao Zhu, Yangyang Xue, Qunyan Ren, Qunyan Ren, Xu Liu, Jiahui Wang, Zhiqiang Cui, Shu Zhang, Huili Fan   +9 more
doaj   +1 more source

Joule-Thomson Expansion of Kerr-AdS Black Holes

, 2018
In this paper, we study Joule-Thomson expansion for Kerr-AdS black holes in the extended phase space. Joule-Thomson expansion formula of Kerr-AdS black holes is derived.
Aydıner, Ekrem, Ökcü, Özgür
core   +1 more source

An inversion method based on random sampling for real-time MEG neuroimaging [PDF]

, 2019
The MagnetoEncephaloGraphy (MEG) is a non-invasive neuroimaging technique with a high temporal resolution which can be successfully used in real-time applications, such as brain-computer interface training or neurofeedback rehabilitation.
Pascarella, Annalisa, Pitolli, Francesca
core   +1 more source

Distribution functions of magnetic nanoparticles determined by a numerical inversion method

New Journal of Physics, 2017
In the present study, we applied a regularized inversion method to extract the particle size, magnetic moment and relaxation-time distribution of magnetic nanoparticles from small-angle x-ray scattering (SAXS), DC magnetization (DCM) and AC ...
P Bender, C Balceris, F Ludwig, O Posth, L K Bogart, W Szczerba, A Castro, L Nilsson, R Costo, H Gavilán, D González-Alonso, I de Pedro, L Fernández Barquín, C Johansson   +13 more
doaj   +1 more source

Particle swarm optimization and its application to seismic inversion of igneous rocks

International Journal of Mining Science and Technology, 2017
In order to improve the fine structure inversion ability of igneous rocks for the exploration of underlying strata, based on particle swarm optimization (PSO), we have developed a method for seismic wave impedance inversion. Through numerical simulation,
Haijun Yang, Yongzhong Xu, Gengxin Peng, Guiping Yu, Meng Chen, Wensheng Duan, Yongfeng Zhu, Yongfu Cui, Xingjun Wang   +8 more
doaj   +1 more source

Production Dynamic of Coal-bed Methane After Well Pressure Based on Multi-layer Perceptron Model Inversion Study

Cejing jishu, 2023
The inversion of production performance after fracturing of coal-bed methane well is the key technology to realize the efficient development of gas reservoir.
LI Jingsong, WANG Tao, WANG Jinwei, WEI Zhipeng, XIAO Cong, TANG Jizhou   +5 more
doaj   +1 more source

A comparative study of Bagley–Torvik equation under nonsingular kernel derivatives using Weeks method

Open Physics
Modeling several physical events leads to the Bagley–Torvik equation (BTE). In this study, we have taken into account the BTE, including the Caputo–Fabrizio and Atangana–Baleanu derivatives. It becomes challenging to find the analytical solution to these
Kamran, Asif Muhammad, Mukheimer Aiman, Shah Kamal, Abdeljawad Thabet, Alotaibi Fahad M.   +5 more
doaj   +1 more source

The accurate numerical inversion of laplace transforms [PDF]

, 1976
Inversion of almost arbitrary Laplace transforms is effected by trapezoidal integration along a special contour. The number n of points to be used is one of several parameters, in most cases yielding absolute errors of order 10-7 for n = 10, 10-11 for n
Tablot, A
core  

Numerical solution for nonlocal Sobolev-type differential equations

Electronic Journal of Differential Equations, 2010
We present a numerical approximate solution to Sobolev-type differential equation subject to nonlocal initial boundary conditions. A Laplace transform method is described for the solution of considered equation.
Shruti A. Dubey
doaj