Results 21 to 30 of about 613,484 (243)

Significant Residue Features Revealed By Eigenvalue Decomposition Analysis Of Blosum Matrices

, 2008
Here we attempt to characterize protein evolution by residue features which dominate residue substitution in homologous proteins. Evolutionary information contained in residue substitution matrix is abstracted with the method of eigenvalue decomposition.
Zhang LM, Liu, X (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China., 刘鑫   +2 more
core   +1 more source

Multiple-rank modification of symmetric eigenvalue problem

MethodsX, 2018
Rank-1 modifications applied k-times (k > 1) often are performed to achieve a rank-k modification. We propose a rank- k modification for enhancing computational efficiency. As the first step toward a rank- k modification, an algorithm to perform a rank-2
HyungSeon Oh, Zhe Hu
doaj   +1 more source

Orthogonal diagonalization for complex skew-persymmetric anti-tridiagonal Hankel matrices

Special Matrices, 2016
In this paper, we obtain an eigenvalue decomposition for any complex skew-persymmetric anti-tridiagonal Hankel matrix where the eigenvector matrix is orthogonal.
Gutiérrez-Gutiérrez Jesús, Zárraga-Rodríguez Marta   +1 more
doaj   +1 more source

Multibaseline InSAR Layover Detection Based on Local Frequency and Eigenvalue

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Layover detection has long been the focus of attention for interferometric synthetic aperture radar (InSAR) data processing. As for the existing layover detection methods, most of them are applied to single-baseline scenarios.
Huaping Xu, Siyuan Wang, Shuo Li, Guobing Zeng, Zhenwan You, Wei Li   +5 more
doaj   +1 more source

Interference suppression in GPS receiver using space-time subspace projection techniques

Tongxin xuebao, 2007
A new approach was proposed for interference suppression in GPS receiver.It combines subspace projection with space-time processing based on the characters of GPS signal,noise and jammers.Space-time interference subspace is constructed using the ...
GUO Yi1, ZHANG Er-yang1, SHEN Rong-jun2
doaj   +2 more sources

Accelerated Discovery of Topological Spin Phase Diagrams in CrSBr Magnets Via High‐Throughput Optimization

Advanced Functional Materials, EarlyView.
Here, we develop a high‐throughput algorithm that accelerates the elucidation of phase diagrams of topological spin textures using limited computational resources at high numerical accuracy. Applying this framework to the van der Waals magnet CrSBr, we unveiled a hierarchy of previously unknown topological textures (domain‐wall bimerons, bimeron chains,
Andrew Lyall, Mohammad H. Badarneh, Cristian Bonato, Rebecca Cheung, Elton J. G. Santos   +4 more
wiley   +1 more source

Defect‐Templated Phase Engineering in Atomically Thin Metals

Advanced Materials, EarlyView.
Graphene defects are transformed from passive imperfections into programmable templates for phase‐selective growth of atomically thin silver. Plasma‐generated boundary defects favor Ag(1), whereas sp3‐rich zero‐layer graphene promotes Ag(2). This defect‐directed intercalation links local graphene chemistry to crystalline phase, electronic structure ...
Arpit Jain, Boyang Zheng, Sawani Datta, Kanchan Ulman, Jakob Henz, Matthew Wei‐Jun Liu, Van Dong Pham, Wen He, Chengye Dong, Li‐Syuan Lu, Alexander Vera, Nader Sawtarie, Wesley Auker, Ke Wang, Bob Hengstebeck, Zachary W. Henshaw, Shreya Mathela, Maxwell Wetherington, William H. Blades, Kenneth Knappenberger, Ursula Wurstbauer, Su Ying Quek, Ulrich Starke, Shengxi Huang, Vincent H. Crespi, Joshua A. Robinson   +25 more
wiley   +1 more source

Fast Adaptive K-Means Subspace Clustering for High-Dimensional Data

IEEE Access, 2019
In many real-world applications, data are represented by high-dimensional features. Despite the simplicity, existing K-means subspace clustering algorithms often employ eigenvalue decomposition to generate an approximate solution, which makes the model ...
Xiao-Dong Wang, Rung-Ching Chen, Fei Yan, Zhi-Qiang Zeng, Chao-Qun Hong   +4 more
doaj   +1 more source

Topological Spin‐Texture Transitions in van der Waals Magnets Revealed by X‐Ray Fourier Transform Holography

Advanced Materials, EarlyView.
Applied here for the first time to a 2D material, high‐resolution synchrotron x‐ray Fourier transform holography directly images topological spin textures in Fe3GeTe2. Combined with atomistic tight‐binding simulations including itinerant electrons and Rashba spin‐orbit coupling, the approach reveals labyrinth, skyrmion, and mixed phases, and uncovers ...
Sourav Chowdhury, Soumyaranjan Dash, Michael Schneider, Christopher Klose, Chithra H. Sharma, Lisa‐Marie Kern, Tim A. Butcher, Josefin Fuchs, Santanu Pakhira, Samik DuttaGupta, Takashi Taniguchi, Kenji Watanabe, Sujit Das, Sanjeev Kumar, Bastian Pfau, Amir‐Abbas Haghighirad, Moritz Hoesch   +16 more
wiley   +1 more source

Efficient approximation of random fields for numerical applications [PDF]

, 2014
This article is dedicated to the rapid computation of separable expansions for the approximation of random fields. We consider approaches based on techniques from the approximation of non-local operators on the one hand and based on the pivoted Cholesky ...
Michael Peters, Markus Siebenmorgen, Peters, Michael, Helmut Harbrecht, Siebenmorgen, Markus, Harbrecht, Helmut   +5 more
core   +1 more source