Results 91 to 100 of about 3,644,794 (274)

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

ML Workflows for Screening Degradation‐Relevant Properties of Forever Chemicals

Advanced Science, EarlyView.
The environmental persistence of per‐ and polyfluoroalkyl substances (PFAS) necessitates efficient remediation strategies. This study presents physics‐informed machine learning workflows that accurately predict critical degradation properties, including bond dissociation energies and polarizability.
Pranoy Ray, Andrew R. Castillo, Manoj Kolel‐Veetil, Surya R. Kalidindi   +3 more
wiley   +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

Sustainable Materials Design With Multi‐Modal Artificial Intelligence

Advanced Science, EarlyView.
Critical mineral scarcity, high embodied carbon, and persistent pollution from materials processing intensify the need for sustainable materials design. This review frames the problem as multi‐objective optimization under heterogeneous, high‐dimensional evidence and highlights multi‐modal AI as an enabling pathway.
Tianyi Xu, Tianshuo Wei, Yan Ge, Bo Peng, Yue Li, Maolin Wang, Peng Wen, Chao Yang, Ye Wei   +8 more
wiley   +1 more source

An Approximation Scheme for the Generalized Geometric Minimum Spanning Tree Problem with Grid Clustering [PDF]

This paper is concerned with a special case of the Generalized Minimum Spanning Tree Problem. The Generalized Minimum Spanning Tree Problem is de¯ned on an undirected graph, where the vertex set is partitioned into clusters, and non-negative costs are ...
Grigoriev,Alexander, Feremans,Corinne
core  

Almost disjoint spanning trees

, 2016
International audienceIn this extended abstract, we only consider connected graphs. Let k ≥ 2 be an integer and T 1 ,. .. , T k be spanning trees in a graph G. A vertex is said to be an inner vertex in a tree T if it has degree at least 2 in T. We denote
Gastineau, Nicolas, Togni, Olivier, Darties, Benoit   +2 more
core   +3 more sources

Unifying Composition and Process Design: A Heterogeneous Graph Neural Network for Discovering High‐Performance Cu Alloys

Advanced Science, EarlyView.
By overcoming the fixed‐path limitations of conventional machine learning, a heterogeneous graph neural network fundamentally reconstructs material data representation. Integrating variable processing sequences with intrinsic elemental features, this framework enables exploratory optimization across high‐dimensional spaces.
Jie Yin, Qian Lei, Wei Yan, Yue Li, Tong Xie, Shuang Zhou, Chong Wang, Bram Hoex, Qiang Long, Caoyang Jiang, Min Song, Zhou Li, Zhangwei Wang   +12 more
wiley   +1 more source

Independent Spanning Trees with Small Stretch Factors

, 1996
A pair of spanning trees rooted at a vertex r are independent if for every vertex v the pair of unique tree paths from v to the root r are disjoint. This paper presents the first analysis of the path lengths involved in independent spanning trees in 2 ...
Ram Swaminathan, Ken Berman, Fred Annexstein   +2 more
core  

Constructing independent spanning trees for locally twisted cubes [PDF]

, 2011
The independent spanning trees (ISTs) problem attempts to construct a set of pairwise independent spanning trees and it has numerous applications in networks such as data broadcasting, scattering and reliable communication protocols.
James K. Lan, Liu, Yi-Jiun, Well Y. Chou, Lan, James K., Chen, Chiuyuan, Chou, Well Y., Yi-Jiun Liu, Chiuyuan Chen   +7 more
core   +1 more source