Results 21 to 30 of about 303,819 (286)

Potential of ALOS2 and NDVI to estimate forest above-ground biomass, and comparison with lidar-derived estimates [PDF]

open access: yes, 2016
Remote sensing supports carbon estimation, allowing the upscaling of field measurements to large extents. Lidar is considered the premier instrument to estimate above ground biomass, but data are expensive and collected on-demand, with limited spatial ...
Callegari, Mattia   +7 more
core   +4 more sources

Preliminary analysis of wave retrieval from Chinese Gaofen-3 SAR imagery in the Arctic Ocean

open access: yesEuropean Journal of Remote Sensing, 2022
Synthetic aperture radar (SAR) is a powerful tool for sea surface monitoring. The 2017–2020 mission of the Chinese Gaofen-3 (GF-3) over the Arctic Ocean provided a unique opportunity to investigate the feasibility of wave retrieval in the Arctic Ocean ...
Wei-Zeng Shao   +5 more
doaj   +1 more source

A Framework for assessing in silico Toxicity Predictions: Case Studies with selected Pesticides [PDF]

open access: yes, 2010
In the regulatory assessment of chemicals, the use of in silico prediction methods such as (quantitative) structure-activity relationship models ([Q]SARs), is increasingly required or encouraged, in order to increase the efficiency and effectiveness of ...
LAPENNA SILVIA   +4 more
core   +1 more source

Correction of Range-Variant Motion Error and Residual RCM in Sparse Regularization SAR Imaging

open access: yesSensors, 2022
Lq (0 < q ≤ 1) regularization has been confirmed effective when applied to sparse SAR imaging. However, the inaccuracies caused by motion errors in the observation model will lead to various degradations and defocus in the reconstructed image.
Jingyi Zhang, Jiacheng Ni
doaj   +1 more source

Power properties if invariant tests for spatial autocorrelation in linear regression [PDF]

open access: yes, 2010
This paper derives some exact power properties of tests for spatial autocorrelation in the context of a linear regression model. In particular, we characterize the circumstances in which the power vanishes as the autocorrelation increases, thus extending
Anderson   +21 more
core   +6 more sources

FLOOD DETECTION IN NORWAY BASED ON SENTINEL-1 SAR IMAGERY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
After large flood incidents in Norway, The Norwegian Water Resources and Energy Directorate (NVE), has the responsibility for documenting the flooded areas.
J. H. Reksten, A.-B. Salberg, R. Solberg
doaj   +1 more source

Three-Dimensional Sparse SAR Imaging with Generalized Lq Regularization

open access: yesRemote Sensing, 2022
Three-dimensional (3D) synthetic aperture radar (SAR) imaging provides complete 3D spatial information, which has been used in environmental monitoring in recent years.
Yangyang Wang   +4 more
doaj   +1 more source

Characterizations of Matrix and Compact Operators on BK Spaces

open access: yesUniversal Journal of Mathematics and Applications, 2023
In the present paper, by estimating operator norms, we give some characterizations of infinite matrix classes $\left( \left\vert E_{\mu }^{r}\right\vert _{q},\Lambda\right) $ and $\left( \left\vert E_{\mu }^{r}\right\vert _{\infty },\Lambda\right ...
Fadime Gökçe
doaj   +1 more source

Review of Software Tools for Toxicity Prediction [PDF]

open access: yes, 2010
When assessing the properties of chemicals, the easiest and most consistent way of applying (Quantitative) Structure-Activity Relationship ([Q]SAR) models is to use ready-made software that implements the models via a user-friendly interface.
FUART GATNIK Mojca, WORTH Andrew
core   +1 more source

(Q)SAR modelling of nanomaterial toxicity: A critical review [PDF]

open access: yesParticuology, 2015
There is an increasing recognition that nanomaterials pose a risk to human health, and that the novel engineered nanomaterials (ENMs) in the nanotechnology industry and their increasing industrial usage poses the most immediate problem for hazard assessment, as many of them remain untested.
Oksel, C   +4 more
openaire   +2 more sources

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