Results 31 to 40 of about 5,707,790 (255)

Analysis of Dynamic Parameters of a Railway Bridge

open access: yesApplied Sciences, 2019
This article analyses the dispersion of vibration accelerations of a railway bridge during the passage of a train, and presents an analysis of their parameters after the application of the theory of covariance functions.
Artūras Kilikevičius   +3 more
doaj   +1 more source

New Closed Form Estimators for the Beta Distribution

open access: yesMathematics, 2023
In this paper, we detail closed form estimators for beta distribution that are simpler than those proposed by Tamae, Irie and Kubokawa. The proposed estimators are shown to have smaller asymptotic variances and smaller asymptotic covariances compared to ...
Victor Mooto Nawa, Saralees Nadarajah
doaj   +1 more source

Covariance function of vector self-similar process [PDF]

open access: yes, 2009
International audienceThe paper obtains the general form of the cross-covariance function of vector fractional Brownian motion with correlated components having different self-similarity ...
Surgailis, Donatas   +2 more
core   +1 more source

The application of the covariance method analysing the digital images of land surface / Žemės dangos pokyčių nustatymas atliekant fotografinių vaizdų palyginimą kovariacijos metodu /

open access: yesGeodesy and Cartography, 2011
Accuracy issues of identification possibilities and analyzing digital images of land surface are examined using a covariance method. Digital images received using remote access methods are treated by the computer programes developed in the Matlab 7 ...
Jurgita Milieškaitė
doaj   +1 more source

Least Squares Collocation Alternative to Helmert’s Transformation with Hausbrandt’s Post – Transformation Correction

open access: yesReports on Geodesy and Geoinformatics, 2015
The paper presents a least squares collocation - based alternative to Helmert’s transformation with Hausbrandt’s post – transformation correction. The least squares collocation is used as an exact predictor i.e.
Ligas Marcin, Banasik Piotr
doaj   +1 more source

The application of photogrammetric numerical methods to the analysis of eye lens digital images

open access: yesGeodesy and Cartography, 2012
Research on the identification possibilities and accuracy of eye lens digital images applying the theory of photogrammetric numerical methods and of covariations functions is presented.
Jonas Skeivalas   +3 more
doaj   +1 more source

Using Spatial Covariance Function for Antitrust Market Delineation [PDF]

open access: yes, 2009
In this paper, an estimation of a Spatial Covariance Function was proposed for determining the relevant geographic market for a merger. This methodology was applied to a proposed merger between two competing Brazilian supermarket chains.
Lucinda, Claudio R.   +1 more
core   +3 more sources

Profiling neoadjuvant therapy response in rectal cancer using meta‐analysis of publicly available transcriptomic RNA‐seq datasets

open access: yesMolecular Oncology, EarlyView.
This study integrates publicly available transcriptomic datasets to identify molecular signatures associated with response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer. By analyzing a combination of multiple cohorts with bioinformatics approaches, we reveal biological pathways and immune‐related features that may improve ...
Aleksandra Stanojevic   +10 more
wiley   +1 more source

A new class of nonseparable space-time covariance models [PDF]

open access: yes, 2008
The aim of this work is to construct nonseparable, stationary covariance functions for processes that vary continuously in space and time. Stochastic modeling of phenomena over space and time is important in many areas of applications such as ...
Fonseca, Thaís C. O., Steel, Mark F. J.
core  

Memory and Resting‐State Connectivity in Acute Transient Global Amnesia: A Case–Control fMRI Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Transient global amnesia (TGA) is a striking model of isolated amnesia. While hippocampal lesions are well described, the network‐level mechanisms and the precise neuropsychological profile remain debated. Our objective was thus to characterize functional and neuropsychological correlates of acute TGA and their ...
Elias El Otmani   +10 more
wiley   +1 more source

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