Results 31 to 40 of about 1,591 (287)

$H^2$-Convergence of Least-Squares Kernel Collocation Methods [PDF]

SIAM Journal on Numerical Analysis, 2018
The strong-form asymmetric kernel-based collocation method, commonly referred to as the Kansa method, is easy to implement and hence is widely used for solving engineering problems and partial differential equations despite the lack of theoretical support.
Ka Chun Cheung, Leevan Ling, Robert Schaback   +2 more
openaire   +4 more sources

Comparison of Relaxation Modulus Converted from Frequency- and Time-Dependent Viscoelastic Functions through Numerical Methods

Applied Sciences, 2018
Due to the difficulty of obtaining relaxation modulus directly from experiments, many interconversion methods from other viscoelastic functions to relaxation modulus were developed in previous years.
Weiguang Zhang, Bingyan Cui, Xingyu Gu, Qiao Dong   +3 more
doaj   +1 more source

Towards a reliable implementation of least-squares collocation for higher index differential-algebraic equations—Part 2 : the discrete least-squares problem

, 2022
In the two parts of the present note we discuss questions concerning the implementation of overdetermined least-squares collocation methods for higher index differential-algebraic equations (DAEs).
März, R., Hanke, Michael,
core   +1 more source

Two covariance models in Least Squares Collocation (LSC) tested in interpolation of local topography

Contributions to Geophysics and Geodesy, 2013
Advantages and disadvantages of least squares collocation (LSC) and kriging have recently been discussed, especially as interdisciplinary research becomes popular.
Wojciech JARMOŁOWSKI, Mieczysław BAKUŁA   +1 more
doaj   +1 more source

Geodesy: General theory and methodology 2015–2018 [PDF]

Geodesy and Cartography, 2019
The summary of research activities concerning general theory and methodology performed in Poland in the period of 2015–2018 is presented as a national report for the 27th IUGG (International Union of Geodesy and Geophysics) General Assembly.
Andrzej Borkowski, Wiesław Kosek, Marcin Ligas   +2 more
doaj   +1 more source

Activation of ERBB4 Pathway Inhibits Pathological Transdifferentiation of Lung Epithelial Progenitors into CD66c+ Basal Cells in Severe Lung Injury

Advanced Science, EarlyView.
In fibrotic distal lung regions, CD66c+ basal cells emerge as a pathological state. Using human distal lung organoids, this study identifies CD66c+ basal cells as a pro‐fibrotic state arising through transdifferentiation from secretory, AT2, and basal cells.
Kaijun Lin, Xinran Deng, Haonan Wang, Yamei Jiang, Jian Sun, Hailin Ding, Ming Ye, Xiaoting Wang, Yu Wang, Li Yuan, Zhenju Song, Xinhua Lin, Shenfei Sun, Ning Jiang   +13 more
wiley   +1 more source

A crossvalidation-based comparison of kriging and IDW in local GNSS/levelling quasigeoid modelling

Reports on Geodesy and Geoinformatics, 2022
This study compares two interpolation methods in the problem of a local GNSS/levelling (quasi) geoid modelling. It uses raw data, no global geopotential model is involved.
Ligas Marcin, Lucki Blazej, Banasik Piotr   +2 more
doaj   +1 more source

Least-squares spectral collocation for discontinuous and singular perturbation problems

, 2003
A least-squares spectral collocation scheme for discontinuous problems is proposed. For the first derivative operator the domain is decomposed in subintervals where the jumps are imposed at the discontinuities.
Heinrichs, Wilhelm
core   +1 more source

Topology‐Enriched Toughness Enhancement in Quasi‐Periodic Metastructures Featuring Tailorable Strong‐Weak Network

Advanced Science, EarlyView.
A quasi‐periodic Dart‐Kite (QDK) metastructure with a golden‐ratio‐constrained strong–weak bond network simultaneously enhances strength, toughness, and damage tolerance. Its distributed topology enables predictable, tailorable crack paths for precise fracture control and stable mechanics, demonstrating a high‐performance, controllable architecture ...
Tianyu Gao, Genda Wang, Jiabao Bai, Kai Liu   +3 more
wiley   +1 more source

Convergence analysis of least-squares collocation methods for nonlinear higher-index differential–algebraic equations

, 2021
We approach a direct numerical treatment of nonlinear higher-index differential–algebraic equations by means of overdetermined polynomial least-squares collocation.
März, R., Hanke, Michael,
core   +1 more source