Results 21 to 30 of about 5,753 (263)

Micromagnetometer Calibration for Accurate Orientation Estimation [PDF]

open access: yesIEEE Transactions on Biomedical Engineering, 2015
Micromagnetometers, together with inertial sensors, are widely used for attitude estimation for a wide variety of applications. However, appropriate sensor calibration, which is essential to the accuracy of attitude reconstruction, must be performed in advance.
Zhi-Qiang, Zhang, Guang-Zhong, Yang
openaire   +2 more sources

Estimation of the finite population covariance using calibration

open access: yesNonlinear Analysis, 2010
Estimators of the finite population covariance with several systems of weights are considered. New calibrated estimators of the finite population covariance (variance) are derived, using two and three weighting systems that are defined by various ...
A. Plikusas, D. Pumputis
doaj   +1 more source

New calibration estimation procedure in the presence of unit non response

open access: yesAin Shams Engineering Journal, 2023
In the present work, we have proposed the calibrated estimator of population mean in the presence of unit non response. The non response has been adjusted using the non response adjustment factor depending on different models (which are inverse linear ...
Ashok Kumar Jaiswal   +2 more
doaj   +1 more source

Learning to Calibrate - Estimating the Hand-eye Transformation Without Calibration Objects [PDF]

open access: yesIEEE Robotics and Automation Letters, 2021
Hand-eye calibration is a method to determine the transformation linking between the robot and camera coordinate systems. Conventional calibration algorithms use a calibration grid to determine camera poses, corresponding to the robot poses, both of which are used in the main calibration procedure.
Krittin Pachtrachai   +3 more
openaire   +2 more sources

Least-Squares Estimators of Drift Parameter for Discretely Observed Fractional Ornstein–Uhlenbeck Processes

open access: yesMathematics, 2020
We introduce three new estimators of the drift parameter of a fractional Ornstein–Uhlenbeck process. These estimators are based on modifications of the least-squares procedure utilizing the explicit formula for the process and covariance structure of a ...
Pavel Kříž, Leszek Szała
doaj   +1 more source

On Accuracy of Calibration Estimators Supported by Auxiliary Variables from Past Periods Based on Simulation Analyses

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2017
In sample surveys there is often a need to estimate not only population characteristics, but subpopulation characteristics as well. We consider the problem of estimating the total value in domains (subpopulations).
Tomasz Stachurski, Tomasz Żądło
doaj   +1 more source

Calibration estimation in dual-frame surveys [PDF]

open access: yesStatistical Methods & Applications, 2015
33 ...
RANALLI, Maria Giovanna   +3 more
openaire   +5 more sources

Estimating radiocarbon calibration curves

open access: yesBayesian Analysis, 2008
In addition to being crucial to the establishment of archaeological chronologies, radiocarbon dating is vital to the establishment of time lines for many Holocene and late Pleistocene palaeoclimatic studies and palaeoenvironmental re- constructions. The calibration curves necessary to map radiocarbon to calendar ages were originally estimated using ...
Blackwell, P. G., Buck, C. E.
openaire   +2 more sources

Calibration Estimators with Different Types of Distance Measures Under Stratified Sampling in the Presence of Measurement Error

open access: yesAxioms
The calibration method is used in stratified random sampling in the presence of measurement error to achieve optimum strata weights for better precision.
Sat Gupta, Pidugu Trisandhya
doaj   +1 more source

Combining Viral Genetics and Statistical Modeling to Improve HIV-1 Time-of-infection Estimation towards Enhanced Vaccine Efficacy Assessment

open access: yesViruses, 2019
Knowledge of the time of HIV-1 infection and the multiplicity of viruses that establish HIV-1 infection is crucial for the in-depth analysis of clinical prevention efficacy trial outcomes.
Raabya Rossenkhan   +28 more
doaj   +1 more source

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