Results 11 to 20 of about 7,756 (210)

Human calcaneal variation relative to subsistence strategy, activity level, and footwear

open access: yesFrontiers in Earth Science, 2023
Lower limb cortical and trabecular bone varies with human behavior, leading to suggestions that activity level decreases have contributed to a more gracile skeleton.
Christine M. Harper
doaj   +1 more source

A contribution to the knowledge of Scots pine (Pinus sylvestris L.) stem shape

open access: yesJournal of Forest Science, 2004
This is a study on the evaluation of stem shape in Scots pine. The experiments were carried out on 430 stems without bark, taken from 30 fully analysed sample trees that grew in 5 different locations in the Czech Republic. Generalized Procrustes analysis
M. Křepela, J. Sequens, D. Zahradník
doaj   +1 more source

Intra- and Interspecific Interactions as Proximate Determinants of Sexual Dimorphism and Allometric Trajectories in the Bottlenose Dolphin Tursiops truncatus (Cetacea, Odontoceti, Delphinidae). [PDF]

open access: yesPLoS ONE, 2016
Feeding adaptation, social behaviour, and interspecific interactions related to sexual dimorphism and allometric growth are particularly challenging to be investigated in the high sexual monomorphic Delphinidae.
Maria Carla de Francesco, Anna Loy
doaj   +1 more source

An improved Fisher discriminant analysis algorithm based on Procrustes analysis for adaptive fault recognition

open access: yesMeasurement + Control, 2019
Aiming at the problem of continuous model updating for fault recognition in the time-varying process, a novel method called the Procrustes analysis–based Fisher discriminant analysis was proposed.
Aimin Miao   +4 more
doaj   +1 more source

COMPARISON OF UNSUPERVISED VEGETATION CLASSIFICATION METHODS FROM VHR IMAGES AFTER SHADOWS REMOVAL BY INNOVATIVE ALGORITHMS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The recognition of vegetation by the analysis of very high resolution (VHR) aerial images provides meaningful information about environmental features; nevertheless, VHR images frequently contain shadows that generate significant problems for the ...
A. Movia, A. Beinat, F. Crosilla
doaj   +1 more source

The Hermitian -Conjugate Generalized Procrustes Problem

open access: yesAbstract and Applied Analysis, 2013
We consider the Hermitian -conjugate generalized Procrustes problem to find Hermitian -conjugate matrix such that is minimum, where , , , and (, ) are given complex matrices, and and are positive integers. The expression of the solution to Hermitian
Hai-Xia Chang   +2 more
doaj   +1 more source

Análise procrustes aplicada í  seleção de variáveis

open access: yesActa Scientiarum: Technology, 2008
Nos estudos exploratórios multivariados, cujo objetivo é a redução da dimensão do conjunto de variáveis, o principal método utilizado é a análise de componentes principais.
Terezinha Aparecida Guedes   +1 more
doaj   +1 more source

Procrustes Problems for General, Triangular, and Symmetric Toeplitz Matrices

open access: yesJournal of Applied Mathematics, 2013
The Toeplitz Procrustes problems are the least squares problems for the matrix equation AX=B over some Toeplitz matrix sets. In this paper the necessary and sufficient conditions are obtained about the existence and uniqueness for the solutions of the ...
Juan Yang, Yuan-bei Deng
doaj   +1 more source

Finite element analysis of feeding in red and gray squirrels (Sciurus vulgaris and Sciurus carolinensis)

open access: yesThe Anatomical Record, EarlyView.
Abstract Invasive gray squirrels (Sciurus carolinensis) have replaced the native red squirrel (Sciurus vulgaris) across much of Great Britain over the last century. Several factors have been proposed to underlie this replacement, but here we investigated the potential for dietary competition in which gray squirrels have better feeding performance than ...
Philip G. Cox, Peter J. Watson
wiley   +1 more source

The morphology of the oval window in Paranthropus robustus compared to humans and other modern primates

open access: yesThe Anatomical Record, EarlyView.
Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley   +1 more source

Home - About - Disclaimer - Privacy