Results 11 to 20 of about 22,359,362 (203)

Sampled-data filtering with error covariance assignment [PDF]

open access: yes, 2001
Copyright [2001] IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services.
Huang, B, Wang, Z, Huo, P
core   +6 more sources

Nonlinear Covariance Analysis-Based Robust Rendezvous Trajectory Design by Improved Differential Evolution Method

open access: yesAerospace, 2022
This paper presents a robust trajectory design method for approaching and rendezvous with a space target considering multi-source uncertainties. A nonlinear covariance analysis method based on the state transition tensor is presented to formulate the ...
Kai Jin   +4 more
doaj   +1 more source

Covariates in linkage analysis [PDF]

open access: yesGenetic Epidemiology, 1999
AbstractWe apply a novel technique to detect significant covariates in linkage analysis using a logistic regression approach. An overall test of linkage is first performed to determine whether there is significant perturbation from the expected 50% sharing under the hypothesis of no linkage; if the overall test is significant, the importance of the ...
J P, Rice   +6 more
openaire   +2 more sources

LATOR covariance analysis [PDF]

open access: yesClassical and Quantum Gravity, 2005
We present results from a covariance study for the proposed Laser Astrometric Test of Relativity (LATOR) mission. This mission would send two laser-transmitter spacecraft behind the Sun and measure the relative gravitational light bending of their signals using a hundred-meter-baseline optical interferometer to be constructed on the International Space
Plowman, Joseph E., Hellings, Ronald W.
openaire   +2 more sources

A New Filtering and Smoothing Algorithm for Railway Track Surveying Based on Landmark and IMU/Odometer

open access: yesSensors, 2017
High-accuracy railway track surveying is essential for railway construction and maintenance. The traditional approaches based on total station equipment are not efficient enough since high precision surveying frequently needs static measurements.
Qingan Jiang   +3 more
doaj   +1 more source

Efficient Methods of Utilizing Multi-SBAS Corrections in Multi-GNSS Positioning

open access: yesSensors, 2020
Various combining methods have been proposed to utilize multi-satellite-based augmentation system (SBAS) correction to provide accurate position in the global navigation satellite system (GNSS) receiver.
Kwi Woo Park   +2 more
doaj   +1 more source

Covariance matrix estimation with heterogeneous samples [PDF]

open access: yes, 2008
We consider the problem of estimating the covariance matrix Mp of an observation vector, using heterogeneous training samples, i.e., samples whose covariance matrices are not exactly Mp.
Bidon, Stéphanie   +2 more
core   +1 more source

The Combination of DAT-SPECT, Structural and Diffusion MRI Predicts Clinical Progression in Parkinson’s Disease

open access: yesFrontiers in Aging Neuroscience, 2019
There is an increasing interest in identifying non-invasive biomarkers of disease severity and prognosis in idiopathic Parkinson’s disease (PD). Dopamine-transporter SPECT (DAT-SPECT), diffusion tensor imaging (DTI), and structural magnetic resonance ...
Sara Lorio   +11 more
doaj   +1 more source

Pyrcca: regularized kernel canonical correlation analysis in Python and its applications to neuroimaging

open access: yesFrontiers in Neuroinformatics, 2016
In this article we introduce Pyrcca, an open-source Python package for performing canonical correlation analysis (CCA). CCA is a multivariate analysis method for identifying relationships between sets of variables.
Natalia Y Bilenko   +2 more
doaj   +1 more source

Covariance-Based Uncertainty Analysis of Reference Equations of State

open access: yes, 2020
This work presents a detailed methodology for uncertainty analysis applied to a reference equation of states (EOSs) based on Helmholtz energy. With increasing interest in uncertainties of thermal process models, it is important to quantify the property ...
Shengwei Wang (5689142)   +5 more
core   +3 more sources

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