Results 61 to 70 of about 2,352 (176)

Implementation of the Deep Blue Aerosol Algorithm on Geostationary Satellite Data

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract National Aeronautics and Space Administration's Deep Blue (DB) aerosol project aims to produce consistent, long‐term climate data records of atmospheric aerosol properties using satellite observations. The DB algorithm has been extensively applied to low Earth orbit (LEO) sensors, including the Moderate Resolution Imaging Spectroradiometer and
Seoyoung Lee   +5 more
wiley   +1 more source

Deforestation Triggers State‐Dependent Cloud Regimes in the Amazon

open access: yesEarth's Future, Volume 14, Issue 8, August 2026.
Abstract The Amazon's arc of deforestation is a hotspot of rapid land‐cover change. Using 20 years of MODIS imagery combined with cloud property retrievals, CERES radiative fluxes, and ERA5 data, we show that deforestation consistently enhances low‐level cloudiness over non‐forest relative to nearby forest during the Amazon dry season.
Tom Dror, Graham Feingold
wiley   +1 more source

TOA Estimator for UWB Backscattering RFID System with Clutter Suppression Capability

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
Time of arrival (TOA) estimation in multipath dense environment for UWB backscattering radio frequency identification (RFID) system is challenging due to the presence of strong clutter.
Xu Chi, Law ChoiL
doaj   +2 more sources

Multi-Source Localization Using Time of Arrival Self-Clustering Method in Wireless Sensor Networks

open access: yesIEEE Access, 2019
The localization of multiple signal sources based on Time Of Arrival (TOA) measurements in wireless sensor networks is investigated in this paper. When the signal sources cannot be distinguished by their signatures or other unique characteristics, the ...
Xinwei Guo   +3 more
doaj   +1 more source

Replacing Tunable Parameters in Weather and Climate Models With State‐Dependent Functions Using Reinforcement Learning

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract Weather and climate models rely on parameterizations to represent unresolved sub‐grid processes. Traditional schemes rely on fixed coefficients that are weakly constrained and tuned offline, contributing to persistent biases that limit their ability to adapt to underlying physics.
Pritthijit Nath   +5 more
wiley   +1 more source

Joint DOA and TOA estimation method based on Pareto multi-task learning

open access: yes上海师范大学学报. 自然科学版
A joint estimation method for direction of arrival (DOA) and time of arrival (TOA) was proposed based on Pareto multi-task learning, which transformed the traditional multi-task learning problem into a multi-objective optimization problem for solution. A
CHEN Erqi, WEI Shuang
doaj   +1 more source

Characteristics of a Multi‐Model Ensemble of Mock‐Walker Simulations

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 8, August 2026.
Abstract The Radiative‐Convective Equilibrium Model Intercomparison Project (RCEMIP) phase I provided insights into the tropical radiative‐convective equilibrium state across an unprecedented ensemble of models that includes both those with parameterized and explicit convection.
Graham L. O’Donnell   +21 more
wiley   +1 more source

Cramer-Rao bounds in the estimation of time of arrival in fading channels

open access: yesEURASIP Journal on Advances in Signal Processing, 2018
This paper computes the Cramer-Rao bounds for the time of arrival estimation in a multipath Rice and Rayleigh fading scenario, conditioned to the previous estimation of a set of propagation channels, since these channel estimates (correlation between ...
René Játiva, Josep Vidal
doaj   +1 more source

Associations of Hearing Loss Defined by Updated World Health Organization Criteria With Socioeconomic Status and Health Check‐Up‐Related Factors: A Population‐Based Cross‐Sectional Study in Japan

open access: yesGeriatrics &Gerontology International, Volume 26, Issue 8, August 2026.
Hearing loss (HL) was associated with lower socioeconomic status and several health check‐up–related factors, like lifestyle and examination data, especially among males. Among males, occupational noise exposure history, diabetes‐related factors, and excessive alcohol consumption showed stronger associations.
Yuri Akamatsu   +7 more
wiley   +1 more source

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