Results 21 to 30 of about 3,328,134 (337)

Omission Error Analysis in Gravity Gradient Measurement

IEEE Access, 2018
Gravity gradient plays an important role in many fields of science, and many methods are used to achieve the measurement of it. To improve measurement accuracy, various error analyses have been conducted in previous studies about positioning and ...
Hongwei Wei, Meiping Wu, Juliang Cao, Junxiang Lian, Shaokun Cai   +4 more
doaj   +1 more source

An Improvement of Pose Measurement Method Using Global Control Points Calibration. [PDF]

PLoS ONE, 2015
During the last decade pose measurement technologies have gained an increasing interest in the computer vision. The vision-based pose measurement method has been widely applied in complex environments.
Changku Sun, Pengfei Sun, Peng Wang
doaj   +1 more source

MEASUREMENT UNCERTAINTY IN LEGAL METROLOGY [PDF]

Romanian Journal of Petroleum & Gas Technology, 2022
In legal metrology, in addition to the elements of the measurement result, the measurement uncertainty is also required in order to establish the level of confidence or risk regarding compliance decisions.
Bogdan-Gabriel Duță, Ionut Banu, Tania-Ioana Cimpeanu, Gabriela Bucur   +3 more
doaj   +1 more source

An exact corrected log-likelihood function for Cox's proportional hazards model under measurement error and some extensions [PDF]

, 2002
This paper studies Cox`s proportional hazards model under covariate measurement error. Nakamura`s (1990) methodology of corrected log-likelihood will be applied to the so called Breslow likelihood, which is, in the absence of measurement error ...
Augustin, Thomas
core   +1 more source

Drifted Uncertainty Evaluation of a Compact Machine Tool Spindle Error Measurement System

Machines
The accurate measurement of spindle errors, especially quasi-static errors, is one of the key issues for the analysis and compensation of machine tool thermal errors in machining accuracy. To quantitatively analyze the influence of the measurement system’
Yubin Huang, Xiong Zhang, Kaisi You, Jihong Chen, Hao Zhou, Hua Xiang   +5 more
doaj   +1 more source

Modeling measurement error in tumor characterization studies

BMC Bioinformatics, 2011
Background Etiologic studies of cancer increasingly use molecular features such as gene expression, DNA methylation and sequence mutation to subclassify the cancer type.
Marjoram Paul, Weisenberger Daniel J, Rakovski Cyril, Laird Peter W, Siegmund Kimberly D   +4 more
doaj   +1 more source

The Relevance of the Technical Error of Measurement in Anthropometry: A Pilot Study from The Nutrifunction Project

Revista Española de Nutrición Humana y Dietética
Introduction. Anthropometry plays a crucial role in nutritional assessment, especially in clinical and research settings where lack of precision affects data reliability and patient care.
Micaela Cunha Rodrigues, Rita Guerra, Adriana Souza, Rui Valdiviesso, Bruna Rosa, Mónica Rodrigues, Maria Luisa Lucena, Ana S. Sousa, Joana Mendes, Ana Rita Sousa Santos, Nuno Borges, Teresa Amaral   +11 more
doaj   +1 more source

Potential impact of systematic and random errors in blood pressure measurement on the prevalence of high office blood pressure in the United States

The Journal of Clinical Hypertension, 2022
The authors examined the proportion of US adults that would have their high blood pressure (BP) status changed if systolic BP (SBP) and diastolic BP (DBP) were measured with systematic bias and/or random error versus following a standardized protocol ...
Swati Sakhuja, Byron C. Jaeger, Oluwasegun P. Akinyelure, Adam P. Bress, Daichi Shimbo, Joseph E. Schwartz, Shakia T. Hardy, George Howard, Paul Drawz, Paul Muntner   +9 more
doaj   +1 more source

Measurement Errors When Measuring Temperature in the Sun

Sensors
In the validation of microclimate simulation software, the comparison of simulation results with on-site measurements is a common practice. To ensure reliable validation, it is crucial to utilize high-quality temperature sensors with a deviation smaller ...
Florian Teichmann, Alexander Pichlhöfer, Abdulah Sulejmanovski, Azra Korjenic   +3 more
doaj   +1 more source

Radial Error Motion Measurement and Its Uncertainty Estimation of Ultra Precision Axes of Rotation with Nanometer Level Precision

Micromachines, 2022
The radial error is the key performance indicator of ultra-precision axis. In order to measure and evaluate the radial error of ultra-precision axis with nanometer accuracy, a measurement system with an accuracy of nanometer based on capacitive ...
Xingbao Liu, Xiaoting Rui, Liang Mi, Qiang Tang, Heng Chen, Yangqiu Xia   +5 more
doaj   +1 more source