Results 41 to 50 of about 1,630,900 (354)

Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching

Photonics, 2021
In this paper, the spatial properties of correlated photon in collinear phase-matching in the process of spontaneous parametric down conversion (SPDC) are researched.
Lin Yin, Jianjun Li, Wenchao Zhai, Maopeng Xia, Youbo Hu, Xiaobing Zheng   +5 more
doaj   +1 more source

A PM1.0/2.5/10 Trichotomous Virtual Impactor Based Sampler: Design and Applied to Arid Southwest Aerosols—Part II: Application to Arid Southwest Aerosols

KONA Powder and Particle Journal, 2014
A PM1.0/2.5/10 Trichotomous sampler has been developed to determine if the particles in the saddle point between the coarse and fine particle modes (specifically the 1.0 μm to 2.5 μm size range) are primarily
Virgil Marple, Dale Lundgren, Bernard Olson   +2 more
doaj   +1 more source

FY-3D MERSI On-Orbit Radiometric Calibration from the Lunar View

Sensors, 2020
Limited by the on-orbital calibration capability, scaling the measured radiance in accuracy and stability is challenging for the Earth observation satellites in the reflective solar bands (RSBs).
Ronghua Wu, Peng Zhang, Na Xu, Xiuqing Hu, Lin Chen, Lu Zhang, Zhongdong Yang   +6 more
doaj   +1 more source

Calibrating sufficiently [PDF]

Statistics, 2021
When probabilistic classifiers are trained and calibrated, the so-called grouping loss component of the calibration loss can easily be overlooked. Grouping loss refers to the gap between observable information and information actually exploited in the calibration exercise. We investigate the relation between grouping loss and the concept of sufficiency,
openaire   +2 more sources

Calibration: the Achilles heel of predictive analytics

BMC Medicine, 2019
BackgroundThe assessment of calibration performance of risk prediction models based on regression or more flexible machine learning algorithms receives little attention.Main textHerein, we argue that this needs to change immediately because poorly ...
B. van Calster, D. McLernon, Maarten van Smeden, L. Wynants, E. Steyerberg, Patrick Gary S. Petra David J. Karel G. M. Ewout W. Ben Ma Bossuyt Collins Macaskill McLernon Moons Steyerber, P. Bossuyt, G. Collins, P. Macaskill, D. McLernon, K. Moons, E. Steyerberg, B. van Calster, Maarten van Smeden, A. Vickers   +14 more
semanticscholar   +1 more source

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

EPJ 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., Binown Abdulelah A., AlMatrawi Ahmed A.   +2 more
doaj   +1 more source

Robust algorithm for calibration of robotic manipulator model

, 2013
The paper focuses on the robust identification of geometrical and elastostatic parameters of robotic manipulator. The main attention is paid to the efficiency improvement of the identification algorithm.
ABBA, Gabriel, KLIMCHIK, Alexandr, WU, Yier, GARNIER, Sébastien, FURET, Benoit, PASHKEVICH, Anatol   +5 more
core   +1 more source

Calibrating Randomness

Bulletin of Symbolic Logic, 2006
We report on some recent work centered on attempts to understand when one set is more random than another. We look at various methods of calibration by initial segment complexity, such as those introduced by Solovay [125], Downey, Hirschfeldt, and Nies [39], Downey, Hirschfeldt, and LaForte [36], and Downey [31]; as well as other methods such as ...
Rodney G. Downey, Denis R. Hirschfeldt, André Nies, Sebastiaan Terwijn   +3 more
openaire   +3 more sources

TerraSAR-X Calibration - First Results

, 2007
As TerraSAR-X, due for launch in February 2007, will be an operational scientific mission with commercial potential, product quality is of paramount importance.
Markus Bachmann, Benjamin Brautigam, Döring, Björn, Schwerdt, Marco, Bachmann, Markus, Bjorn Doring, Bräutigam, Benjamin, Marco Schwerdt   +7 more
core   +1 more source

Automatic planning for machine tool calibration: A case study [PDF]

, 2012
Machine tool owners require knowledge of their machine’s capabilities, and the emphasis increases with areas of high accuracy manufacturing. An aspect of a machine’s capability is its geometric accuracy. International Standards and best-practice guides
P. Gregory, Parkinson, Simon, Parkinson, S., Fletcher, Simon, S. Fletcher, Crampton, Andrew, Fletcher, S., Crampton, A., A. Crampton, Longstaff, Andrew P., Longstaff, A. P., S. Parkinson, Gregory, Peter, A.P. Longstaff   +13 more
core   +1 more source