Results 61 to 70 of about 1,731 (272)

A Projection Strategy for Improving the Preconditioner in the LOBPCG

International Journal of Applied Mathematics and Computer Science
The computational methods for solving the generalized eigenvalue problems of real symmetric matrices are crucial in fields such as structural dynamics analysis.
Ma Tailai, Sun Shuli, Zheng Fangyi, Chen Pu   +3 more
doaj   +1 more source

Preconditioned conjugate gradient methods for the incompressible Navier‐Stokes equations [PDF]

International Journal for Numerical Methods in Fluids, 1992
AbstractA robust technique for solving primitive variable formulations of the incompressible Navier‐Stokes equations is to use Newton iteration for the fully implicit non‐linear equations. A direct sparse matrix method can be used to solve the Jacobian but is costly for large problems; an alternative is to use an iterative matrix method.
Chin, P., D'Azevedo, E. F., Forsyth, P. A., Tang, W.-P.   +3 more
openaire   +1 more source

AI‐Directed 3D Printing of Hierarchical Polyurethane Foams

Advanced Science, EarlyView.
Digitally guided direct ink writing, combined with AI‐generated design, enables the fabrication of hierarchical polyurethane foams with tunable multiscale porosity. This approach produces architected foams featuring interconnected open‐cell networks and tailored mechanical properties, advancing the development of adaptive, high‐performance materials ...
Dhanush Patil, Jie Tian, Kun Jiang, Clarissa Westover, Sri Vaishnavi Thummalapalli, Arunachalam Ramanathan, Arpita Shome, Natalie Crutchfield, M. Taylor Sobczak, Sean Lee, Hongyue Sun, Elizabeth J. Brisbois, Hitesh Handa, Timothy E. Long, Xianqiao Wang, Kenan Song   +15 more
wiley   +1 more source

Pseudoinverse preconditioners and iterative methods for large dense linear least-squares problems [PDF]

Bulletin of Computational Applied Mathematics, 2013
We address the issue of approximating the pseudoinverse of the coefficient matrix for dynamically building preconditioning strategies for the numerical solution of large dense linear least-squares problems.
Oskar Cahueñas, Luis M. Hernández-Ramos, Marcos Raydan   +2 more
doaj  

Wave‐Partition‐Governed Dual‐Site Spallation in Single Crystals

Advanced Science, EarlyView.
Crystalline anisotropy shapes shock‐wave propagation and the resulting damage evolution in single crystals. Large‐scale molecular dynamics and damage modeling uncover a dual‐spallation mechanism driven by anisotropic elasticplastic wave separation, which mitigates damage accumulation.
Youlin Zhu, Sheng Qian, Lianfu Qiu, Jianian Hu, Guoqiang Luo, Qiang Shen, Qi Tong   +6 more
wiley   +1 more source

A second-level diagonal preconditioner for single-step SNPBLUP

Genetics Selection Evolution, 2019
Background The preconditioned conjugate gradient (PCG) method is an iterative solver of linear equations systems commonly used in animal breeding. However, the PCG method has been shown to encounter convergence issues when applied to single-step single ...
Jeremie Vandenplas, Mario P. L. Calus, Herwin Eding, Cornelis Vuik   +3 more
doaj   +1 more source

OCTN2 Activates a Non‐Canonical Carnitine Metabolic Pathway to Promote MASH‐HCC Progression and Immunotherapy Resistance

Advanced Science, EarlyView.
In non‐MASH‐HCC, L‐carnitine promotes tumor progression primarily through its classical role in enhancing fatty acid oxidation (FAO). However, in MASH‐HCC, where FAO is markedly suppressed, L‐carnitine shifts from this canonical function to serve instead as an intracellular acetyl group buffer.
Chuqi Xia, Xiao Zhang, Jinze Li, Ning Xu, Sheng Hu, Qiyu Lu, Yuxuan Li, Taifu Xiao, Xu Li, Xue Wang, Kequan Xu, Daoming Liang   +11 more
wiley   +1 more source

Self‐Assembled Myricetin‐Arginine Conjugate Nanozymes for Targeted Suppression of Joint Inflammation and Osteoclastogenesis in Rheumatoid Arthritis

Advanced Science, EarlyView.
Carrier‐free myricetin‐arginine conjugate nanozymes (MANZs) have been fabricated through a Mannich reaction and spontaneous self‐assembly. MANZs selectively accumulate in inflamed joints by targeting M1 macrophages via CAT2‐mediated uptake. The nanozymes can effectively modulate macrophage polarization, suppress osteoclast differentiation, and mitigate
Jiachang Hong, Penghao Ji, Jinxi An, Junchao Huang, Ziheng Bu, Xudong Zhang, Wei Liu, Tingyu Wu, Sen Wang, Wei Zhu, Yuhui Li, Jixian Wan, Sudan Xu, Minfeng Huo, Peng Wu   +14 more
wiley   +1 more source

On single-step HSS iterative method with circulant preconditioner for fractional diffusion equations

Advances in Difference Equations, 2019
By exploiting Toeplitz-like structure and non-Hermitian dense property of the discrete coefficient matrix, a new double-layer iterative method called SHSS-PCG method is employed to solve the linear systems originating from the implicit finite difference ...
Mu-Zheng Zhu, Guo-Feng Zhang, Ya-E Qi
doaj   +1 more source

Soft Robotic Sim2Real via Conditional Flow Matching

Advanced Intelligent Systems, EarlyView.
A new framework based on conditional flow matching addresses the persistent Sim2Real gap in soft robotics. By learning a conditional probability path, the model directly transforms inaccurate simulation data to match physical reality, successfully capturing complex phenomena like hysteresis.
Ge Shi, Xing Wang, André Farinha, Joshua Pinskier, Xing Shen, Richard Scalzo, David Howard   +6 more
wiley   +1 more source