Results 111 to 120 of about 52,420 (290)

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

Quality check of vertical component using GPS RTK method and laser system ; Preverjanje kakovosti vertikalne komponente z uporabo metode GPS RTK in laserskim sistemom [PDF]

Geodetski Vestnik, 2011
Največja omejitev pri uporabi metode izmere GNNS RTK za običajne geodetske naloge je merska kakovost. V kombinaciji z laserskim sistemom lahko povečamo natančnost določitve višinske komponente metode GNSS RTK na milimetrsko raven.
Ante Marendić, Mladen Zrinjski, Rinaldo Paar   +2 more
doaj  

Statistical comparison analysis of different real-time kinematic methods for the development of photogrammetric products: CORS-RTK, CORS-RTK + PPK, RTK-DRTK2, and RTK + DRTK2 + GCP

Open Geosciences
Abstract Traditional photogrammetry techniques require the use of Ground Control Points (GCPs) to accurately georeference aerial images captured by unmanned aerial vehicles (UAVs). However, the process of collecting GCPs can be time-consuming, labor-intensive, and costly.
Monjardín-Armenta, Sergio A., Rangel-Peraza, Jesús Gabriel, Sanhouse-García, Antonio J., Plata-Rocha, Wenseslao, Rentería-Guevara, Sergio Arturo, Mora-Félix, Zuriel Dathan   +5 more
openaire   +2 more sources

Retrospective image analysis for long‐term demography using Google Earth imagery

Remote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution Google Earth imagery, combined with minimal field validation, enables retrospective tracking of individual invasive plants. The image shows one of the monitored individuals of Opuntia sp. in Greece. Our approach reveals long‐term demographic patterns, recruitment dynamics, and spatial expansion without continuous ...
Erola Fenollosa, Garrett Cohen, Roberto Salguero‐Gómez   +2 more
wiley   +1 more source

Detecting Plateau Zokor (Eospalax baileyi) Mounds in UAV Imagery of Alpine Meadows Using Deep Learning Algorithms

Remote Sensing in Ecology and Conservation, EarlyView.
We developed PZM‐YOLO to automatically detect plateau zokor mounds in UAV imagery of alpine meadows. The model achieved reliable detection of small and densely distributed mounds under complex backgrounds, outperforming the baseline YOLOv5s. This framework supports mound counting, mound position, rodent impact assessment, and grassland restoration ...
Yang Yang, Limin Hua, Lianguo Wang, Jiazhen Li, Rui Dong, Siwei Yang   +5 more
wiley   +1 more source

Climate‐Driven Mangrove Dieback and Recovery: A Case Study in Albert and Leichhardt Rivers, Australia

Remote Sensing in Ecology and Conservation, EarlyView.
Cycles of dieback and recovery drove mangrove forest dynamics at the Albert and Leichhardt Rivers (Gulf of Carpentaria, Queensland, Australia) over 36 years (1987–2023). Landward margins were the most affected by reduced tidal inundation when the alignment of low lunar declination suppressed tidal range and extreme El Niño phases lowered mean sea level.
Rogerio Victor S. Gonçalves, Emma Asbridge, Jeffrey J. Kelleway, Richard Lucas, Kerrylee Rogers   +4 more
wiley   +1 more source

Hydrographic survey of a south Florida canal using a hydrolite

Journal of Geodetic Science, 2017
In this study, a hydrographic map of a South Florida canal is prepared using RTK GPS (Real Time Kinematic Global Positioning System) measurements combined with a hydrolite (single beam echo sounder).
Berber M., Wright W.
doaj   +1 more source

Rotation capacity of continuous reinforced concrete slab strips revisited

Structural Concrete, EarlyView.
Abstract Rotation capacity is a key characteristic of statically indeterminate reinforced concrete structures, as it (i) enables bending moment redistributions, whether intentionally introduced through optimized reinforcement layouts or arising from unforeseen self‐equilibrated stress states, and (ii) promotes large rotations at failure load, thereby ...
Nathalie Reckinger, Karel Thoma, Walter Kaufmann   +2 more
wiley   +1 more source

PPM1G‒MET axis sustains AKT signaling to drive Twist‐associated EMT and drug resistance in hepatocellular carcinoma

VIEW, EarlyView.
Hepatocellular carcinoma (HCC) is frequently resistant to targeted therapies. We identify protein phosphatase Mg2+/Mn2+‐dependent 1G (PPM1G) as a key phosphatase that stabilizes mesenchymal‐epithelial transition factor (MET) by inhibiting its ubiquitination, thereby sustaining protein kinase B (AKT) signaling and promoting Twist‐mediated epithelial ...
Weixun Wu, Songbin Lin, Cong Zhou, Jinwu Hu, Kun Liu, Yongfeng Xu, Zhenbin Ding, Mengting Luo, Bo Hu   +8 more
wiley   +1 more source

An autonomous robot for weed control : design, navigation and control [PDF]

, 2009
In de biologische landbouw worden geen chemische middelen toegepast voor onkruidbestrijding. Een van de grootste knelpunten in de biologische open teelt (bv suikerbieten, uien) is het onkruidprobleem.
Bakker, T.
core