Results 21 to 30 of about 91,384 (299)

A sun-tracking method to improve the pointing accuracy of weather radar [PDF]

open access: yesAtmospheric Measurement Techniques, 2012
Accurate positioning of data collected by a weather radar is of primary importance for their appropriate georeferencing, which in turn makes it possible to combine those with additional sources of information (topography, land cover maps, meteorological ...
X. Muth, M. Schneebeli, A. Berne
doaj   +1 more source

Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor

open access: yesMicromachines, 2023
One of the key reasons for the deterioration of antenna pointing accuracy for radio telescopes is the deformation and tilt of antenna alidades, which primarily result from track unevenness and thermal gradients.
Qian Xu, Fei Xue, Hui Wang, Letian Yi
doaj   +1 more source

Accuracy of point-of-care measurements [PDF]

open access: yesCanadian Medical Association Journal, 2007
In a helpful case report in CMAJ , Peter Brindley and colleagues reported falsely elevated lactate levels obtained with a point-of-care analyzer and low plasma lactate levels obtained with laboratory testing in a patient who had ingested ethylene glycol.[1][1] Further investigation showed that ...
openaire   +3 more sources

Development of a Numerical Simulation Model to Support the Design of a Ship–Satellite Communication System for Autonomous Marine Navigation

open access: yesRemote Sensing, 2023
In recent years, the concept of autonomous navigation systems has gained substantial significance, with the potential to change the traditional concept of autonomous navigation.
Federico Del Mondo   +4 more
doaj   +1 more source

PRELIMINARY ESTIMATION ON POINTING ACCURACY OF JAPANESE QUASI-ZENITH SATELLITE-1 (MICHIBIKI) L1-SAIF [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Japanese Quasi-Zenith Satellite-1 (QZS1) named MICHIBIKI was launched in September, 2010. This paper shows a preliminary estimation of positioning accuracy of the QZS1. The mission of QZS1 is to raise the positioning accuracy of GPS.
M. Tokunaga, Y. Nagaoka, T. Shoda
doaj   +1 more source

Physical demand but not dexterity is associated with motor flexibility during rapid reaching in healthy young adults [PDF]

open access: yes, 2015
Healthy humans are able to place light and heavy objects in small and large target locations with remarkable accuracy. Here we examine how dexterity demand and physical demand affect flexibility in joint coordination and end-effector kinematics when ...
Hortobágyi, Tibor   +14 more
core   +1 more source

Effects of feedback, mobility and index of difficulty on deictic spatial audio target acquisition in the horizontal plane [PDF]

open access: yes, 2006
We present the results of an empirical study investigating the effect of feedback, mobility and index of difficulty on a deictic spatial audio target acquisition task in the horizontal plane in front of a user.
Marentakis, G.N.   +4 more
core   +1 more source

Design and Evaluation on Onboard Antenna Pointing Control System for a Wireless Relay System Using Fixed-Wing UAV

open access: yesAerospace, 2023
Among several usages of unmanned aerial vehicles (UAV), wireless relay systems for high altitudes using fixed-wing UAVs, or high-altitude platform stations (HAPS), are some of the most promising applications.
Koki Hamajima   +7 more
doaj   +1 more source

Accuracy of a Point-of-Care Hemoglobin A1c Assay [PDF]

open access: yesJournal of Diabetes Science and Technology, 2019
Point-of-care test (POCT) HbA1c assays provide rapidly available results for clinical decision-making. Accuracy and precision must be established. Venous blood samples from 300 patients were assayed for HbA1c by a laboratory technician (“laboratory assessment”) with the POCT Alere Afinion™ assay and a laboratory (Premier Affinity
David M. Nathan   +5 more
openaire   +2 more sources

Inverse Solution Error Analysis and Correction of Beam Steering System Based on Risley Prisms

open access: yesApplied Sciences, 2022
The pointing accuracy of the Risley prisms beam-steering system mainly depends on the accuracy of the solution method and the impact of the error on the solution.
Yinuo Song   +4 more
doaj   +1 more source

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