Results 101 to 110 of about 30,556 (255)

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source

Mapping and classification of ecologically sensitive marine habitats using unmanned aerial vehicle (UAV) imagery and object-based image analysis (OBIA) [PDF]

, 2018
Nowadays, emerging technologies, such as long-range transmitters, increasingly miniaturized components for positioning, and enhanced imaging sensors, have led to an upsurge in the availability of new ecological applications for remote sensing based on ...
Ardizzone, Domenico, Belluscio, Andrea, Bonifazi, Andrea, Gravina, Maria Flavia, Ventura, Daniele   +4 more
core   +1 more source

Quantifying microhabitat selection of snowshoe hares using forest metrics from UAS‐based LiDAR

Wildlife Biology, EarlyView.
Identifying the spatial and temporal scale at which animals select resources is critical for predicting how populations respond to changes in the environment. The spatial distribution of fine‐scale resources (e.g. patches of dense vegetation) are often linked with critical life‐history requirements such as denning and feeding sites.
Alexej P. K. Sirén, Franklin Sullivan, Rachel Cliché, Jeremy Goetz, Leighlan S. Prout, Jillian Kilborn, Katelyn Courtot, Michael Palace   +7 more
wiley   +1 more source

Georeferenced Dynamic Event Handling [PDF]

, 2015
A fast and efficient response to hazardous events can make the difference between life and death. Using this necessity as premise, surveillance systems are evolving, increasing the number of sensors used in event detection and developing new methods and algorithms for events handling.
Onofre, Sérgio, Pimentão, João, Sousa, Pedro   +2 more
openaire   +2 more sources

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

HOUSING QUESTION OLD AND NEW: Mapping Crowding, Tenure, Rents and Segregation in the Neighborhoods of Major European Cities around 1900 and Today

International Journal of Urban and Regional Research, EarlyView.
Abstract In a context of unprecedented urbanization, nineteenth‐century European cities faced the ‘housing question’, i.e. precarious housing standards and affordability problems. While existing research has well described these historical housing problems in single‐city studies or in national urbanization histories, to our knowledge, there are hardly ...
Sebastian Kohl, Florian Müller, Ria Wilken   +2 more
wiley   +1 more source

Rulers on the road: Itinerant rule in the Holy Roman Empire, AD 919–1519

American Journal of Political Science, EarlyView.
Abstract Itinerant rule, rule exercised through traveling, was a common yet insufficiently researched, premodern form of governance. Studying the determinants of ruler itineraries in the Holy Roman Empire, AD 919–1519, we argue that rulers' visits targeted “marginal” elites.
Carl Müller‐Crepon, Clara Neupert‐Wentz, Andrej Kokkonen, Jørgen Møller   +3 more
wiley   +1 more source

Climate Change and Biosphere Response: Unlocking the Collections Vault

, 2011
Natural history collections (NHCs) are an important source of the long-term data needed to understand how biota respond to ongoing anthropogenic climate change.
Brooks, Stephen J., Fenberg, Phillip B., Glover, Adrian G., James, Karen E., Johnson, Kenneth G., Lister, Adrian M., Michel, Ellinor, Spencer, Mark, Stewart, John R., Todd, Jonathan A., Valsami-Jones, Eugenia, Young, Jeremy R.   +11 more
core   +1 more source

Flow‐pattern evolution of the Scandinavian Ice Sheet indicated by the subglacial lineation record over Norway, Sweden and Finland

Boreas, EarlyView.
We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher, Anna L. C. Hughes, Helen E. Dulfer, Christopher D. Clark, Jeremy C. Ely, Emma L. M. Lewington, Benjamin M. Boyes, Alex C. Scoffield, Stephen Howcutt, Christiaan R. Diemont   +9 more
wiley   +1 more source

A Survey of Methods for Constructing 3D Urban Models From Point Clouds

Computer Graphics Forum, EarlyView.
The survey outlines a general process for constructing 3D models from point clouds and categorizes the methods based on their use of templates, basic surface primitives, hybrid approaches, or linear primitives. Additionally, the survey reviews the datasets and benchmarks that are essential for testing and training the developed methods.
Chiara Romanengo, Silvia Biasotti, Bianca Falcidieno, Daniela Cabiddu, Elia Moscoso Thompson, Michela Spagnuolo   +5 more
wiley   +1 more source