Results 51 to 60 of about 2,679,915 (389)

Accurate Automation of Deadweight Force Standard Machine Based on Artificial Intelligent Model at NMCC-SASO-KSA [PDF]

open access: yesEPJ Web of Conferences
Accurate force measurements are critical in a various fields including metrology, material testing, and quality control. In this study, we propose an automated process for precise force measurements using Dead weight standard machines up to 1kN.
AlGhamdi Hamad A.   +2 more
doaj   +1 more source

FY-3G Satellite Instruments and Precipitation Products: First Report of China’s Fengyun Rainfall Mission In-Orbit

open access: yesJournal of Remote Sensing, 2023
Precipitation is one of the most important parameters in Earth system but is hard to measure. China began to develop satellites dedicated to precipitation measurements in the second generation of the FengYun polar-orbiting meteorological satellite ...
Peng Zhang   +16 more
doaj   +1 more source

Establishment of AC-DC transfer standard at SASO-NMCC [PDF]

open access: yesEPJ Web of Conferences
This paper documents the achievements of traceability and the technical evaluation of the newly established AC-DC Difference calibration service for AC voltage measurements at the NMCC, KSA.
Alrobaish Abdullah, Aljomaie Ahmed
doaj   +1 more source

A Unifying Theory of Distance from Calibration [PDF]

open access: yesarXiv, 2022
We study the fundamental question of how to define and measure the distance from calibration for probabilistic predictors. While the notion of perfect calibration is well-understood, there is no consensus on how to quantify the distance from perfect calibration.
arxiv  

Soft calibration for selection bias problems under mixed-effects models [PDF]

open access: yes, 2022
Calibration weighting has been widely used to correct selection biases in non-probability sampling, missing data, and causal inference. The main idea is to calibrate the biased sample to the benchmark by adjusting the subject weights. However, hard calibration can produce enormous weights when an exact calibration is enforced on a large set of ...
arxiv   +1 more source

A Unified Clumped Isotope Thermometer Calibration (0.5–1,100°C) Using Carbonate‐Based Standardization

open access: yesGeophysical Research Letters, 2021
The potential for carbonate clumped isotope thermometry to independently constrain both the formation temperature of carbonate minerals and fluid oxygen isotope composition allows insight into long‐standing questions in the Earth sciences, but remaining ...
N. Anderson   +13 more
semanticscholar   +1 more source

High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems

open access: yesSensors, 2021
To realize high-precision and high-frequency unattended site calibration and detection of satellites, automatic direction adjustment must be implemented in mirror arrays.
Ruijin Li   +6 more
doaj   +1 more source

Kandinsky Conformal Prediction: Efficient Calibration of Image Segmentation Algorithms [PDF]

open access: yesarXiv, 2023
Image segmentation algorithms can be understood as a collection of pixel classifiers, for which the outcomes of nearby pixels are correlated. Classifier models can be calibrated using Inductive Conformal Prediction, but this requires holding back a sufficiently large calibration dataset for computing the distribution of non-conformity scores of the ...
arxiv  

Stable D-branes, calibrations and generalized Calabi-Yau geometry [PDF]

open access: yesJHEP0508:099,2005, 2005
We introduce generalized calibrations that take into account the gauge field on the D-brane so that calibrated submanifolds minimize the Dirac-Born-Infeld energy. We establish the calibration bound and show that the calibration form is closed in a supersymmetric background with non-vanishing NS-NS 3-form H and dilaton.
arxiv   +1 more source

LCCNet: LiDAR and Camera Self-Calibration using Cost Volume Network

open access: yes2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2021
Multi-sensor fusion is for enhancing environment perception and 3D reconstruction in self-driving and robot navigation. Calibration between sensors is the precondition of effective multi-sensor fusion.
Xudong Lv   +4 more
semanticscholar   +1 more source

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