Results 11 to 20 of about 11,557,043 (380)

Measurement error models: Editors’ introduction [PDF]

open access: yesJournal of Econometrics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hu, Yingyao, Wansbeek, Tom
openaire   +3 more sources

Construction, calibration and performance evaluation of a lysimeter, with a double weighing system: Hydraulic and mechanical

open access: yesSmart Agricultural Technology, 2023
According to the literature, hydraulic and mechanical weighing lysimeters, which use electronic load cells, are considered the most accurate equipment to directly determine reference evapotranspiration (ETo) and crop evapotranspiration (ETc).
Alcides Arruda, Junior   +1 more
doaj   +1 more source

Error modeling and analysis of alternating measurement mode roadheader positioning system

open access: yesGong-kuang zidonghua, 2022
The alternating measurement mode roadheader positioning technology will produce cumulative measurement error in the process of multiple alternating measurement, which will affect the positioning precision of roadheader.
LI Zhihai   +4 more
doaj   +1 more source

The Assumption of a Reliable Instrument and Other Pitfalls to Avoid When Considering the Reliability of Data

open access: yesFrontiers in Psychology, 2012
The purpose of this article is to help researchers avoid common pitfalls associated with reliability including incorrectly assuming that (a) measurement error always attenuates observed score correlations, (b) different sources of measurement error are ...
Kim eNimon   +2 more
doaj   +1 more source

Mid-infrared autocollimation for linear motion error measurement

open access: yesMeasurement: Sensors, 2021
It is known that linear motion errors for linear guides can be measured by the autocollimation method. In this case, it is necessary to install a mirror on the measurement target.
Hiraku Matsukuma   +4 more
doaj   +1 more source

Uncertainty evaluation of multilateration-based geometric error measurement considering the repeatibility of positioning of the machine tool [PDF]

open access: yesMetrology and Measurement Systems, 2023
The sequential multilateration principle is often adopted in geometric error measurement of CNC machine tools. To identify the geometric errors, a single laser tracker is placed at different positions to measure the length between the target point and ...
Xingbao Liu, Yangqiu Xia, Xiaoting Rui
doaj   +1 more source

The impact of imprecisely measured covariates on estimating gene-environment interactions [PDF]

open access: yes, 2006
BACKGROUND The effects of measurement error in epidemiological exposures and confounders on estimated effects of exposure are well described, but the effects on estimates for gene-environment interactions has received rather less attention.
Cade, J.E.   +2 more
core   +2 more sources

Design of variable frequency dual transponder system for fixed point ranging

open access: yesElectronics Letters, 2023
Aiming at the problems of high system cost, complex ranging process, low ranging accuracy, and limited measurement distance in commonly used methods for ground fixed point distance measurement journals, a variable frequency microwave ranging system based
Guo Xiaoxu   +3 more
doaj   +1 more source

Regression calibration for Cox regression under heteroscedastic measurement error - Determining risk factors of cardiovascular diseases from error-prone nutritional replication data [PDF]

open access: yes, 2003
For instance nutritional data are often subject to severe measurement error, and an adequate adjustment of the estimators is indispensable to avoid deceptive conclusions.
Augustin, Thomas   +2 more
core   +2 more sources

Measurement Error in Retrospective Work Histories

open access: yesSurvey Research Methods, 2014
Measurement error in retrospective reports of work status has been difficult to quantify in the past. Issues of confidentiality have made access to datasets linking survey responses to a valid administrative source very problematic.
Jose Pina Sánchez   +2 more
doaj   +1 more source

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