Results 61 to 70 of about 3,899,169 (179)

Arctic Snow Density Retrieval from AMSR-2 Passive Microwave Brightness Temperatures: A Comparative Evaluation of Machine-Learning and Deep-Learning Models

Journal of Marine Science and Engineering
Snow density influences Arctic climate, ecosystems, and surface energy exchange, yet spatially continuous observations remain limited. This study constructed an ERA5-supervised snow-density dataset for 60–90° N by collocating Advanced Microwave Scanning ...
Jianjun Zhang, Wentao Zhou, Shuhu Yang, Yun Zhang   +3 more
doaj   +1 more source

Preeclampsia early risk stratification based on a multiparametric machine learning model and routinely collected clinical data

Акушерство, гинекология и репродукция
Introduction. Preeclampsia (PE) remains one of the leading causes of maternal and perinatal morbidity and mortality, while most cases are still diagnosed at the stage of clinically overt disease.
A. A. Ivshin, N. A. Malyshev
doaj   +1 more source

An annual cropland extent dataset for Africa at 30 m spatial resolution from 2000 to 2022 [PDF]

Earth System Science Data
Accurate cropland mapping is essential for understanding agricultural dynamics in Africa and critical for achieving Sustainable Development Goals (SDGs) such as Zero Hunger.
Z. Lou, Z. Lou, D. Peng, D. Peng, Z. Shi, Z. Shi, H. Wang, K. Liu, Y. Zhang, X. Yan, X. Yan, Z. Chen, Z. Chen, S. Ye, S. Ye, L. Yu, J. Hu, J. Hu, J. Hu, Y. Lv, Y. Lv, Y. Lv, H. Peng, H. Peng, Y. Zhang, Y. Zhang, Y. Zhang, B. Zhang, B. Zhang   +28 more
doaj   +1 more source

DIRECTION PROBLEM IN LEADER-FOLLOWER FORMATIONS OF UNMANNED AERIAL VEHICLES AND SATELLITE CLUSTERS

Havacılık ve Uzay Teknolojileri Dergisi, 2007
This paper is concerned with information structures used in rigid formations of unmanned aerial vehicles (UAV’s) and micro-satellite clusters that have leader-follower architecture. The focus of the paper is on sensor/network topologies to secure control
Tolga Eren
doaj  

Temperature response surfaces for mortality risk of tree species with future drought

Environmental Research Letters, 2017
Widespread, high levels of tree mortality, termed forest die-off, associated with drought and rising temperatures, are disrupting forests worldwide. Drought will likely become more frequent with climate change, but even without more frequent drought ...
Henry D Adams, Greg A Barron-Gafford, Rebecca L Minor, Alfonso A Gardea, Lisa Patrick Bentley, Darin J Law, David D Breshears, Nate G McDowell, Travis E Huxman   +8 more
doaj   +1 more source

On the independent spanning tree conjectures and related problems

, 2019
We say that trees with common root are (edge-)independent if, for any vertex in their intersection, the paths to the root induced by each tree are internally (edge-)disjoint.
Hoyer, Alexander
core  

Graph Theoretical Analysis Reveals: Women's Brains Are Better Connected than Men's.

PLoS ONE, 2015
Deep graph-theoretic ideas in the context with the graph of the World Wide Web led to the definition of Google's PageRank and the subsequent rise of the most popular search engine to date. Brain graphs, or connectomes, are being widely explored today. We
Balázs Szalkai, Bálint Varga, Vince Grolmusz   +2 more
doaj   +1 more source

Ensemble width estimation in HRTF-convolved binaural music recordings using an auditory model and a gradient-boosted decision trees regressor

EURASIP Journal on Audio, Speech, and Music Processing
Binaural audio recordings become increasingly popular in multimedia repositories, posing new challenges in indexing, searching, and retrieval of such excerpts in terms of their spatial audio scene characteristics. This paper presents a new method for the
Paweł Antoniuk, Sławomir K. Zieliński, Hyunkook Lee   +2 more
doaj   +1 more source

Network-inspired restructuring for individual tree segmentation in ULS point clouds

International Journal of Applied Earth Observations and Geoinformation
Individual tree segmentation (ITS) from UAV-borne laser scanning (ULS) point clouds remains challenging because dense point-cloud volumes, complex canopy structures, and site-dependent forest conditions can limit the transferability of existing methods ...
Lei Bao, Yong Wu, Leiguang Wang, Xiaoli Zhang, Zhibo Yu, Zhi Liu, Chi Lu, Yuansu Xu, Hong Wang, Xiaohan Liu, Weibin Wang, Hongbin Luo, Guanglong Ou   +12 more
doaj   +1 more source

Adaptive graph learning of microbial phylogeny enables accurate and interpretable microbiome-based host phenotype prediction

Applied and Environmental Microbiology
The human microbiome is inherently structured by phylogeny, yet most predictive models treat microbial taxa as independent features, thereby underusing evolutionary information that may improve disease classification.
Biao Dong, Bin Wang, Jiongjin Chen, Xiaomin Xu, Zhenjiang Zech Xu   +4 more
doaj   +1 more source