Results 41 to 50 of about 377 (171)

Entropy Approximation by Machine Learning Regression: Application for Irregularity Evaluation of Images in Remote Sensing

open access: yesRemote Sensing, 2022
Approximation of entropies of various types using machine learning (ML) regression methods are shown for the first time. The ML models presented in this study define the complexity of the short time series by approximating dissimilar entropy techniques ...
Andrei Velichko   +3 more
doaj   +1 more source

On the Distinguishability of HRF Models in fMRI

open access: yesFrontiers in Computational Neuroscience, 2015
Modelling the Haemodynamic Response Function (HRF) is a critical step in fMRI studies of brain activity, and it is often desirable to estimate HRF parameters with physiological interpretability.
Paulo Nobre Rosa   +3 more
doaj   +1 more source

Small-scale topographic irregularities on Phobos: image and numerical analyses for MMX mission

open access: yesEarth, Planets and Space, 2021
The mothership of the Martian Moons eXploration (MMX) will perform the first landing and sampling on the surface of Phobos. For the safe landing, the 2.1-m-wide mothership of the MMX should find a smooth surface with at most 40 cm topographic ...
Tomohiro Takemura   +4 more
doaj   +1 more source

The Benefit of Space Clocks for the Deep Space Network

open access: yesRadio Science, Volume 60, Issue 8, August 2025.
Abstract Ground‐based atomic clocks have been the foundation of the Deep Space Network's (DSN's) ability to provide high‐precision tracking to deep space users for navigation and radio science since its inception in the mid‐1960s. This paper describes the development of space clocks that could aid the DSN and the solar system exploration enterprise ...
T. Ely, E. Burt, K. Cheung, R. Tjoelker
wiley   +1 more source

Spectral variability of Phobos and Deimos from TGO/CaSSIS multiband observations

open access: yesAstronomy & Astrophysics
Aims. We present a comparative visible and near-infrared multiband analysis of Phobos and Deimos aimed at characterising the compositional variability of the Martian moons. Methods.
Beccarelli J.   +15 more
doaj   +1 more source

S2check: a tool for quality control of sentinel-2 products

open access: yesEuropean Journal of Remote Sensing, 2018
With more than 4 TB of data acquired every day, the Sentinel 2 mission poses new challenges for quality control (QC). To support the QC operations of Sentinel 2, a dedicated tool has been developed for improved efficiency and traceability of analyses ...
Sébastien Clerc   +4 more
doaj   +1 more source

Publishing NextGEOSS data on the GEOSS Platform

open access: yesBig Earth Data, 2023
This paper is the second of a series that describes some of the main dataset resources presently shared through the GEOSS Platform. The GEOSS Platform was created as the technological tool to implement interoperability among the Global Earth Observation ...
Roberto Roncella   +6 more
doaj   +1 more source

Weak gravitational lensing with DEIMOS

open access: yes, 2010
7 pages, 3 figures, fixed typo in Eq ...
Melchior, P.   +3 more
openaire   +3 more sources

Evaluation of Vegetation Bias in InSAR Time Series for Agricultural Areas Within the San Joaquin Valley, CA

open access: yesEarth and Space Science, Volume 12, Issue 6, June 2025.
Abstract Agricultural regions present a particularly difficult set of challenges during interferometric synthetic aperture radar (InSAR) displacement time series analyses due to the existence of abrupt transitions in land use over short spatial scales and rapid temporal changes associated with different stages of the agricultural cycle.
Kelly R. Devlin, Rowena B. Lohman
wiley   +1 more source

Fluidly Revealing Information: A Survey of Un/foldable Data Visualizations

open access: yesComputer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract Revealing relevant information on demand is an essential requirement for visual data exploration. In this state‐of‐the‐art report, we review and classify techniques that are inspired by the physical metaphor of un/folding to reveal relevant information or, conversely, to reduce irrelevant information in data visualizations.
M.‐J. Bludau   +3 more
wiley   +1 more source

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