Results 71 to 80 of about 20,294 (194)

Refined Stratified Random Field Sampling for Inhomogeneous Turbulence Reconstruction

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 1, March 2026.
ABSTRACT We present a refined stratified sampling method for the numerical simulation of a recently introduced random field model for the reconstruction of inhomogeneous turbulence from characteristic flow quantities. The refinement concerns the generation of random wave vectors and allows for an improved accuracy of the simulated fluctuation field.
Markus Antoni, Quinten Kürpick, Felix Lindner   +2 more
wiley   +1 more source

Variable Step-size EASI Blind Source Separation Algorithm Based on Crosstalk Error and Separation Degree [PDF]

Jisuanji gongcheng, 2017
When the source signal consists of components with large energy difference or the global matrix is a non-row element dominant matrix,the variable step-size Equivariant Adaptive Separation via Independence(EASI) algorithm based on crosstalk error cannot ...
LI Zhenbi,WANG Kang,JIANG Yuanyuan
doaj   +1 more source

On the zero stability of the variable order variable stepsize BDF-Formulas

Numerische Mathematik, 1990
The authors derive bounds for the mesh-size ratios \(h_{j+1}/h_ j\) of nonequidistant grids such that variable order backward differentiation formulas are zero-stable. In the case of 3-step formulas the results of the third author and \textit{P. J. Paes-Lemme} [BIT 24, 85-91 (1984; Zbl 0554.65052)] are substantially improved.
GRIGORIEFF, R.D., Calvo, M., Grande, T.
openaire   +1 more source

High‐throughput single‐cell DNA methylation and chromatin accessibility co‐profiling with SpliCOOL‐seq

Clinical and Translational Medicine, Volume 16, Issue 2, February 2026.
SpliCOOL‐seq achieves high‐throughput single‐cell co‐profiling of DNA methylation and chromatin accessibility. DNMT inhibitors caused cancer cell demethylation with divergent patterns. SpliCOOL‐seq enables the discovery of genes related to LUAD tumorigenesis. Ageing and LUAD tumorigenesis may share similar epigenetic alterations.
Qingmei Shen, Enze Deng, Ling Luo, Jingna Zhang, Qifeng Yang, Dan Su, Xiaoying Fan   +6 more
wiley   +1 more source

Solving hyperchaotic initial value problems using second derivative extended trapezoidal rule of the second kind blended with generalized backward differentiation formulae with variable step size

Recent Advances in Natural Sciences
This paper aims to evaluate the accuracy and performance of the second derivative block extended trapezoidal rule of the second kind, blended with generalized backward differentiation formulae using variable step sizes, in solving hyperchaotic initial ...
E. J. Onoja, U. W. Sirisena
doaj   +1 more source

Delayless Block Individual-Weighting-Factors Sign Subband Adaptive Filters With an Improved Band-Dependent Variable Step-Size

IEEE Access, 2020
Delayless individual-weighting-factors sign subband adaptive filter (IWF-SSAF) algorithms with a band-dependent variable step-size (BDVSS) were recently introduced to achieve a robust convergence performance against the impulsive interference and to ...
Jung-Hee Kim, Jeong-Hwan Choi, Sang Won Nam, Joon-Hyuk Chang   +3 more
doaj   +1 more source

Variable order variable stepsize algorithm for solving nonlinear Duffing oscillator

Journal of Physics: Conference Series, 2017
Nonlinear phenomena in science and engineering such as a periodically forced oscillator with nonlinear elasticity are often modeled by the Duffing oscillator (Duffing equation). The Duffling oscillator is a type of nonlinear higher order differential equation.
Rasedee, Ahmad Fadly Nurullah, Ishak, Norizarina, Hamzah, Siti Raihana, Ijam, Hazizah Mohd, Suleiman, Mohamed, Ibrahim, Zarina Bibi, Sathar, Mohammad Hasan Abdul, Ramli, Nur Ainna, Kamaruddin, Nur Shuhada   +8 more
openaire   +1 more source

ACT‐Agent: Affinity‐Cross Transformer for Point Cloud Registration via Reinforcement Learning

IET Image Processing, Volume 20, Issue 1, January/December 2026.
1. We proposed a point cloud registration framework combining imitation learning and reinforcement learning, which formulates the registration problem as a Markov decision process with discrete action sequences. 2. We designed the Affinity‐Cross Transformer module to enhance the point cloud feature representation and interaction capabilities. 3.
Fengguang Xiong, Haixin Gong, Qiao Ma, Yingbo Jia, Ruize Guo, Yu Cao, Ligang He, Liqun Kuang, Xie Han   +8 more
wiley   +1 more source

Strong Convergence of Extragradient-Type Method to Solve Pseudomonotone Variational Inequalities Problems

Axioms, 2020
A number of applications from mathematical programmings, such as minimax problems, penalization methods and fixed-point problems can be formulated as a variational inequality model.
Nopparat Wairojjana, Nuttapol Pakkaranang, Habib ur Rehman, Nattawut Pholasa, Tiwabhorn Khanpanuk   +4 more
doaj   +1 more source

Numerical comparisons among some methods for Hamiltonian problems

, 2010
We report a few sumerical tests comparing some newly defined energy-preserving integrators and symplectic methods, using either constant and variable stepsize.Comment: 5 pages, 8 ...
Brugnano, Luigi, Iavernaro, Felice, Trigiante, Donato   +2 more
core   +1 more source