Results 31 to 40 of about 39,302 (251)

Estimation of Pine Forest Height and Underlying DEM Using Multi-Baseline P-Band PolInSAR Data

Remote Sensing, 2016
On the basis of the Gaussian vertical backscatter (GVB) model, this paper proposes a new method for extracting pine forest height and forest underlying digital elevation model (FUDEM) from multi-baseline (MB) P-band polarimetric-interferometric radar ...
Haiqiang Fu, Changcheng Wang, Jianjun Zhu, Qinghua Xie, Bing Zhang   +4 more
doaj   +1 more source

Spaceborne potential for examining taiga–tundra ecotone form and vulnerability [PDF]

Biogeosciences, 2016
In the taiga–tundra ecotone (TTE), site-dependent forest structure characteristics can influence the subtle and heterogeneous structural changes that occur across the broad circumpolar extent. Such changes may be related to ecotone form, described by the
P. M. Montesano, G. Sun, R. O. Dubayah, K. J. Ranson   +3 more
doaj   +1 more source

STAMI: A machine learning-based small-scale tomography-aided multibaseline (Pol)InSAR forest height inversion framework

International Journal of Applied Earth Observations and Geoinformation
The complementary measurements of model-based multibaseline (polarimetric) synthetic aperture radar interferometry ((Pol)InSAR) and data-driven SAR tomography (TomoSAR) have become the development trend of forest height mapping missions.
Tianyi Song, Jie Yang, Weidong Sun, Lei Shi, Changcheng Wang, Pingxiang Li, Haiqiang Fu, Lingli Zhao, Peng Shen, Pingping Huang   +9 more
doaj   +1 more source

ARQUITETURA E ESTRUTURA VERTICAL DA COMUNIDADE ARBÓREA DE UMA FLORESTA ESTACIONAL SUBTROPICAL

Ciência Florestal, 2018
This study proposed stipulate the limits and characterize the vertical strata, observing the regularity of the distribution of species abundance, on height gradient of the trees in forest.
Malcon do Prado Costa, Solon Jonas Longhi, Alessandro Abreu Fávero   +2 more
doaj   +1 more source

Forest Structure Mapping of Boreal Coniferous Forests Using Multi-Source Remote Sensing Data

Remote Sensing
Modeling forest structure using multi-source satellite data is beneficial to understanding the relationship between vertical and horizontal structure and image features to provide more comprehensive and abundant information for the study of forest ...
Rula Sa, Wenyi Fan
doaj   +1 more source

Effects of Forest Fragmentation on the Vertical Stratification of Neotropical Bats

Diversity, 2020
Vertical stratification is a key component of the biological complexity of rainforests. Understanding community- and species-level responses to disturbance across forest strata is paramount for evidence-based conservation and management.
Inês Silva, Ricardo Rocha, Adrià López-Baucells, Fábio Z. Farneda, Christoph F. J. Meyer   +4 more
doaj   +1 more source

Tropical Forest Vertical Structure Characterization: From GEDI to P-Band SAR Tomography

IEEE Geoscience and Remote Sensing Letters, 2022
Estimating tropical forests vertical structure using remote sensing is a challenge. Active sensors such as lowfrequency Synthetic Aperture Radar (SAR) operating at P-band, with a wavelength of ∼ 69 cm wavelength, and Light Detection and Ranging (LiDAR) are able to penetrate thick vegetation layers.
Ngo, Yen-Nhi, Huang, Yue, Minh, Dinh, Ferro-Famil, Laurent, Fayad, Ibrahim, Baghdadi, Nicolas   +5 more
openaire   +3 more sources

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Combining Multi-Dimensional SAR Parameters to Improve RVoG Model for Coniferous Forest Height Inversion Using ALOS-2 Data

Remote Sensing, 2023
This paper considers extinction coefficient changes with height caused by the inhomogeneous distribution of scatterers in heterogeneous forests and uses the InSAR phase center height histogram and Gaussian function to fit the normalized extinction ...
Rula Sa, Yonghui Nei, Wenyi Fan
doaj   +1 more source