Results 41 to 50 of about 33,815,075 (304)

Two-dimensional local Fourier image reconstruction via domain decomposition Fourier continuation method. [PDF]

PLoS ONE, 2019
The MRI image is obtained in the spatial domain from the given Fourier coefficients in the frequency domain. It is costly to obtain the high resolution image because it requires higher frequency Fourier data while the lower frequency Fourier data is less
Ruonan Shi, Jae-Hun Jung, Ferdinand Schweser   +2 more
doaj   +1 more source

Fourier Ptychographic Reconstruction Method of Self-Training Physical Model

Applied Sciences, 2023
Fourier ptychographic microscopy is a new microscopic computational imaging technology. A series of low-resolution intensity images are collected by a Fourier ptychographic microscopy system, and high-resolution intensity and phase images are ...
Xiaoli Wang, Yan Piao, Yuanshang Jin, Jie Li, Zechuan Lin, Jie Cui, Tingfa Xu   +6 more
doaj   +1 more source

Non-stationary heat exchange in cylindrical channel at laminar flow of fluids

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
Using double integral Laplace–Carson transformation and orthogonal method of Bubnov–Galyorkin, the analytical solution of the non-stationary problem of heat transfer in a cylindrical channel in the laminar flow of fluids was obtained. It has two components:
Anton V Eremin, Ekaterina V Stefanyuk, Alexander Yu Rassypnov, Anastasiya E Kuznetsova   +3 more
doaj   +1 more source

A simple method for a fourier analysis [PDF]

Physica, 1953
Synopsis A Fourier analysis has been made using only a phototension cell, an alternating current galvanometer and a rotating device.
Milatz, J.M.W., Wapstra, A.H., Wieringen, J.S. van   +2 more
openaire   +3 more sources

Fourier Spectral Methods for Nonlocal Models [PDF]

Journal of Peridynamics and Nonlocal Modeling, 2020
Efficient and accurate spectral solvers for nonlocal models in any spatial dimension are presented. The approach we pursue is based on the Fourier multipliers of nonlocal Laplace operators introduced in a previous work. It is demonstrated that the Fourier multipliers, and the eigenvalues in particular, can be computed accurately and efficiently.
Bacim Alali, Nathan Albin
openaire   +2 more sources

On Variational Fourier Particle Methods

Journal of Scientific Computing
AbstractIn this article we describe a unifying framework for variational electromagnetic particle schemes of spectral type, and we propose a novel spectral Particle-In-Cell (PIC) scheme that preserves a discrete Hamiltonian structure. Our work is based on a new abstract variational derivation of particle schemes which builds on a de Rham complex where ...
Martin Campos Pinto, Jakob Ameres, Katharina Kormann, Eric Sonnendrücker   +3 more
openaire   +3 more sources

Solution of Lane-Emden Equation with Fourier Decomposition Method

Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2022
In this article, we tried to get the solution of a class of Lane Emden type equations by using the Fourier Decomposition Method. This method is obtained by using the Fourier transform and the Adomian Decomposition method (FADM) together.
Murat Düz
doaj   +1 more source

ZW4864‐mediated inhibition of the β‐catenin/BCL9/BCL9L complex reveals therapeutic potential in bladder cancer

Molecular Oncology, EarlyView.
BCL9 and BCL9L drive bladder cancer progression by enhancing β‐catenin signaling, promoting proliferation, migration, invasion, and organoid growth. Genetic depletion of BCL9(L) suppresses malignant phenotypes, while pharmacological disruption of the β‐catenin/BCL9(L) complex with ZW4864 inhibits canonical Wnt signaling and tumor‐associated cellular ...
Roland Kotolloshi, Mandy Berndt‐Paetz, Eileen Lerner, Gregoire Najjar, Anca Azoitei, Krishna Pal Singh, Shailendra Kumar Gupta, Olaf Wolkenhauer, Cagatay Günes, Otmar Huber, Marc‐Oliver Grimm, Daniel Steinbach   +11 more
wiley   +1 more source

On a nonlinear inverse boundary value problem for linearized sixth-order Boussinesq equation with an additional integral condition

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. A huge number of mathematical models are called Boussinesq equations; therefore, a wide range of sixth-order Boussinesq equations attracts a lot of attention from outside researchers around the world. Materials and methods.
Araz Salamulla Farajov
doaj   +1 more source

Topographic solitary waves by the shooting method and Fourier spectral method

Results in Physics, 2020
The influences of topography on barotropic Rossby solitary waves are discussed in this paper. A Boussinesq model equation of nonlinear Rossby wave amplitude is derived by using the perturbation expansion method and the space–time transformation.
Jiaqi Zhang, Ruigang Zhang, Liangui Yang
doaj   +1 more source