Results 121 to 130 of about 774,978 (297)

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Estimating Rain‐Specific Attenuation at Extremely High Frequencies From Disdrometer Measurements at Various Climate Zones in the US

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT The raindrop size distribution (DSD) plays an essential role in understanding rain attenuation effects at extremely high frequencies (EHFs). Over 1 year of DSD measurements was taken at different Köppen–Geiger climate classifications within the United States. Optical disdrometers from Thies Clima were used to measure both the size and velocity
Eugene S. Hong, George Brost, Nicholas Tarasenko, Steven A. Lane   +3 more
wiley   +1 more source

Integrated meteocean and seismic dataset for AI-based seawater CO₂ estimation at Deception Island, Antarctica. [PDF]

Sci Data
Flecha S, Amaya-Vías S, Medina M, Stips A, Fraile-Nuez E, Jiménez-Morales V, Contreras-Guijarro G, Díez-Minguito M, Caballero-Martínez OA, Navarro G, Tovar-Sanchez A, Huertas IE.   +11 more
europepmc   +1 more source

Dual Polarized SAR Imaging Techniques for Ship Classification

INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT
Classifying ships in synthetic aperture radar (SAR) imagery is a challenging task because the targets are often small and the differences between ship categories are subtle. Traditional deep learning methods frequently disregard the polarimetric characteristics of SAR data, which becomes a limitation when working with dual-polarized images.
openaire   +1 more source

The Hidden Costs of Coffee Production in the Eastern African Value Chains

Sustainable Development, EarlyView.
ABSTRACT There is increasing recognition that significant hidden costs associated with agrifood systems are not reflected in market prices. Coffee is among the three most traded agricultural commodities in the world and supports the livelihoods of more than 30 million smallholder households.
Annet Adong, Lukas Kornher, Bezawit Beyene Chichaibelu, Aslihan Arslan   +3 more
wiley   +1 more source

Shipboard observational evidence of supercooled liquid water clouds in the mid-troposphere over the Southern Ocean. [PDF]

Sci Rep
Inoue J, Sato K, Shimizu S.
europepmc   +1 more source

Live Imaging of Silver Nanostructures Electrochemically Dissolving at Open‐Circuit Potential

Small, EarlyView.
Stability of electrocatalysts as used in energy conversion systems is pivotal for sustainable technologies, yet degradation dynamics at the nanoscale remain elusive. Harnessing beam‐effect corrected electrochemical liquid phase electron microscopy combined with correlative bulk‐scale electrochemical testing reveals silver corrosion on platinum under ...
Andreas Körner, A. Lucía Morales, Birk Fritsch, Lena Fiedler, Justin T. Mulvey, Christian Göllner, Damien Alloyeau, Joseph P. Patterson, Paolo Malgaretti, Karl J. J. Mayrhofer, Serhiy Cherevko, Andreas Hutzler   +11 more
wiley   +1 more source

Voyage to the Frozen Continent: A Comprehensive GNSS Dataset from a Ship's Expedition to Antarctica. [PDF]

Sci Data
Bertalanič B, Dimc F, Bažec M, Blatnik A.   +3 more
europepmc   +1 more source

Anode‐Free Cell Concepts: Critical Analysis and Development of Practical Batteries

Small, EarlyView.
Anode‐free batteries (AFBs) are considered one of the most promising battery technologies due to their potential advantages in terms of energy density, manufacturing ease, and sustainability. This Perspective article provides a comprehensive overview of the latest advances in AFBs with liquid and solid electrolytes, a critical analysis of cell ...
Svetlana Menkin, Elixabete Ayerbe, Anna B. Gunnarsdóttir, Diego del Olmo, Pedro López‐Aranguren, Amna Rafique, Jokin Rikarte, Susana Chauque, Xiaorui Shi, Olivier Guillon, Robert Dominko, Philipp Schlee, Martin Finsterbusch, Andriy Kvasha, Dina Fattakhova‐Rohlfing   +14 more
wiley   +1 more source