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pro vyhledávání: '"Lei Hong"'
This paper establishes a variant of Stewart's theorem (Theorem~6.4 of Stewart, {\em SIAM Rev.}, 15:727--764, 1973) for the singular subspaces associated with the SVD of a matrix subject to perturbations. Stewart's original version uses both the Frobe
Externí odkaz:
http://arxiv.org/abs/2406.06901
Autor:
Zhang, Lei-Hong, Li, Ren-Cang
Model reduction is a powerful tool in dealing with numerical simulation of large scale dynamic systems for studying complex physical systems. Two major types of model reduction methods for linear time-invariant dynamic systems are Krylov subspace-bas
Externí odkaz:
http://arxiv.org/abs/2406.05665
In the least-squares fitting framework, the Vandermonde with Arnoldi (V+A) method presented in [Brubeck, Nakatsukasa, and Trefethen, SIAM Review, 63 (2021), pp. 405-415] is an effective approach to compute a polynomial that approximates an underlying
Externí odkaz:
http://arxiv.org/abs/2404.09266
Autor:
Zhang, Lei-Hong, Han, Shanheng
Lawson's iteration is a classical and effective method for solving the linear (polynomial) minimax approximation in the complex plane. Extension of Lawson's iteration for the rational minimax approximation with both computationally high efficiency an
Externí odkaz:
http://arxiv.org/abs/2401.00778
Given samples of a real or complex-valued function on a set of distinct nodes, the traditional linear Chebyshev approximation is to compute the best minimax approximation on a prescribed linear functional space. Lawson's iteration is a classical and
Externí odkaz:
http://arxiv.org/abs/2308.07636
Computing the discrete rational minimax approximation in the complex plane is challenging. Apart from Ruttan's sufficient condition, there are few other sufficient conditions for global optimality. The state-of-the-art rational approximation algorith
Externí odkaz:
http://arxiv.org/abs/2308.06991
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-7 (2024)
Abstract Negative pressure wound therapy with instillation and dwell time (NPWTi-d) is increasingly used for a diverse range of wounds. Meanwhile, the topical wound irrigation solution consisting of polyhexamethylene biguanide and betaine (PHMB-B) ha
Externí odkaz:
https://doaj.org/article/2cc73789478f44438af0aaad6e953e0f
Publikováno v:
ACS Omega, Vol 9, Iss 19, Pp 21440-21449 (2024)
Externí odkaz:
https://doaj.org/article/006122e98e7343f5b514e94dde255c9a
Autor:
Xiaoli Jia, Mingzhe Li, Qi Zhang, Miao Jia, Lei Hong, Shuqi Zhang, Yuhua Wang, Yangxin Luo, Tingting Wang, Jianghua Ye, Haibin Wang
Publikováno v:
Frontiers in Plant Science, Vol 15 (2024)
Dahongpao mother tree (Camellia sinensis (L.) O. Ktze) is a representative of Wuyi rock tea. Whether there is a difference in rhizosphere soil microbial diversity and function between asexually propagated cuttings of Dahongpao (PD) and the parent Dah
Externí odkaz:
https://doaj.org/article/2d13b6ebe69540418d819c10d727a959
Publikováno v:
Jisuanji kexue yu tansuo, Vol 18, Iss 3, Pp 597-611 (2024)
With the emergence of concepts such as metaverse and Web3.0, blockchain plays a very important role in many fields. Cross-chain technology is an important technical means to achieve inter-chain interconnection and value transfer. At this stage, tradi
Externí odkaz:
https://doaj.org/article/3bd31744dbb740e59143d02d7122f6b6