Results 91 to 100 of about 23,181 (222)

Disentangling Orthogonal Matrices

, 2017
Motivated by a certain molecular reconstruction methodology in cryo-electron microscopy, we consider the problem of solving a linear system with two unknown orthogonal matrices, which is a generalization of the well-known orthogonal Procrustes problem ...
Singer, Amit, Zhang, Teng
core   +1 more source

Functional 2D Procrustes Shape Analysis [PDF]

, 2005
Using a landmark based approach to Procrustes alignment neglects the functional nature of outlines and surfaces. In order to re-introduce this functional nature into the analysis we will consider alignment of shapes with functional representations. First functional Procrustes analysis of curve shapes is treated.
openaire   +1 more source

Chondroitin sulfate restores muscle mass via gut–muscle axis remodeling through sugar–bile acid metabolism reprogramming

iMeta, EarlyView.
The graphical abstract illustrates the molecular mechanism by which chondroitin sulfate (DCS) alleviates glucocorticoid‐induced myopathy through the gut–muscle axis. DCS selectively enriches L. johnsonii Z‐RW, enhancing bshA‐encoded BSH activity to promote bile acid deconjugation and reduce the sugar–bile acid ratio, thereby re‐establishing intestinal ...
Ruiyun Wu, Tao Wen, Nan Shang, Penghao Xie, Zhenyu Wang, Hang Li, Shaobo Li, Dequan Zhang   +7 more
wiley   +1 more source

Body shape analysis of Bosnian mountain horses using Procrustes statistics

Italian Journal of Animal Science, 2010
Procrustes analysis was performed on 4 samples of horse populations (11 Bosniak horses from a private farm in Nevesinje, 2 Bosniak horses from a former state farm in Han Piesak, 12 Bosniak horses from the former state stud farm Borike and 18 purebred ...
Ino Curik, Refik Telalbasic, Thomas Druml   +2 more
doaj   +1 more source

Procrustes Shape Analysis of Planar Point Subsets

Journal of the Royal Statistical Society Series B: Statistical Methodology, 1997
Summary Consider a set of points in the plane randomly perturbed about a mean configuration by Gaussian errors. In this paper a Procrustes statistic based on the shapes of subsets of the points is studied, and its approximate distribution is found for small variations.
Dryden, Ian L., Faghihi, Mohammad Reza, Taylor, Charles C.   +2 more
openaire   +2 more sources

Macroscale Gradient‐Informed Neural Oscillation Topography in Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Background Parkinson's disease (PD) is characterized by large‐scale disruptions in beta and gamma oscillations. Although subcortical beta power is an established biomarker for current adaptive deep brain stimulation (aDBS), it may not fully capture the global pathophysiological burden and the macroscale hierarchical reorganization of the ...
Hao Ding, Ke Xie, Manuel Bange, Hannah Kühne, Jenny Blech, Bahman Nasseroleslami, Jens Volkmann, Sergiu Groppa, Muthuraman Muthuraman   +8 more
wiley   +1 more source

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +1 more source

Bayesian perspective for orientation determination in cryo‐EM with application to structural heterogeneity analysis

Acta Crystallographica Section D, EarlyView.
A Bayesian perspective on orientation estimation in cryo‐EM is presented, with the minimum mean‐square error estimator outperforming standard cross‐correlation‐based approaches, particularly under challenging low signal‐to‐noise conditions. We demonstrate that improved orientation estimation has a decisive impact on 3D reconstruction quality and ...
Sheng Xu, Amnon Balanov, Amit Singer, Tamir Bendory   +3 more
wiley   +1 more source

SPSS Syntax for Combining Results of Principal Component Analysis of Multiply Imputed Data Sets using Generalized Procrustes Analysis. [PDF]

Appl Psychol Meas, 2021
van Wingerde B, van Ginkel J.
europepmc   +1 more source

Weighted Majorization Algorithms for Weighted Least Squares Decomposition Models [PDF]

For many least-squares decomposition models efficient algorithms are well known. A more difficult problem arises in decomposition models where each residual is weighted by a nonnegative value.
Giaquinto, P., Groenen, P.J.F., Kiers, H.A.L.   +2 more
core   +1 more source