Results 21 to 30 of about 8,583,864 (289)

Retrieving Freeze/Thaw Surface State From CYGNSS Measurements

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2022
Freeze/Thaw (F/T) surface state retrieval is important to further understand hydrological patterns and climate change. This article investigates the use of Earth-reflected Global Positioning System (GPS) L-band signals as collected by the National ...
H. Carreno-Luengo, C. Ruf
semanticscholar   +1 more source

Satellite passive microwave sea-ice concentration data set intercomparison using Landsat data

open access: yesThe Cryosphere, 2022
. We report on results of an intercomparison of 10 global sea-ice concentration (SIC) data products at 12.5 to 50.0 km grid resolution from satellite passive microwave (PMW) observations.
S. Kern   +6 more
semanticscholar   +1 more source

Airborne Transducer Integrity under Operational Environment for Structural Health Monitoring

open access: yesSensors, 2016
This paper investigates the robustness of permanently mounted transducers used in airborne structural health monitoring systems, when exposed to the operational environment.
Mohammad Saleh Salmanpour   +2 more
doaj   +1 more source

The relationship between mental workload and nurse stress levels in hospitals

open access: yesHealthcare in Low-resource Settings, 2023
High mental workload implies significant mental resources and can lead to increased cognitive stress and fatigue. Nurses have the responsibility of managing a wide range of nursing care tasks, which frequently involve addressing anxiety, handling ...
Zahid Fikri   +4 more
doaj   +1 more source

Lidar Ratio–Depolarization Ratio Relations of Atmospheric Dust Aerosols: The Super‐Spheroid Model and High Spectral Resolution Lidar Observations

open access: yesJournal of Geophysical Research - Atmospheres, 2022
The backscattering optical properties of an ensemble of randomly oriented dust particles at a wavelength of 355 nm were comprehensively studied by examining the invariant imbedding T‐matrix results of the super‐spheroid dust model.
Senyi Kong, Kaori Sato, L. Bi
semanticscholar   +1 more source

Uniaxial attitude control of uncrewed aerial vehicle with thrust vectoring under model variations by deep reinforcement learning and domain randomization

open access: yesROBOMECH Journal, 2023
The application of neural networks for nonlinear control has been actively studied in the field of aeronautics. Successful techniques have been demonstrated to achieve improved control performance in simulation using deep-reinforcement learning.
Atsushi Osedo   +2 more
doaj   +1 more source

Evaluation of the Earth Systems Research Laboratory's global Observing System Simulation Experiment system [PDF]

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2013
An Observing System Simulation Experiment (OSSE) system has been implemented at the National Oceanographic and Atmospheric Administration Earth Systems Research Laboratory in the US as part of an international Joint OSSE effort.
Nikki C. Privé   +5 more
doaj   +1 more source

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

open access: yesMaterials, 2021
Tribological properties of engineering components are a key issue due to their effect on the operational performance factors such as wear, surface characteristics, service life and in situ behavior.
Üsame Ali Usca   +5 more
semanticscholar   +1 more source

Numerical assessment in aeronautics for electromagnetic environmental effects

open access: yes, 2018
Electromagnetic Compatibility for Space Systems Design is a critical scholarly resource that examines the applications of electromagnetic compatibility and electromagnetic interference in the space industry.
Miguel Ruiz-Cabello Núñez   +20 more
semanticscholar   +1 more source

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