Results 271 to 280 of about 1,292,395 (359)

Snow and wind - Blowing snow.

Journal of Geography (Chigaku Zasshi), 1989
openaire   +2 more sources

Ground‐truthing of satellite imagery to assess seabird colony size: A test using Adélie penguins

Remote Sensing in Ecology and Conservation, EarlyView.
Adélie penguin colony size can be estimated from space using very high‐resolution (VHR; 0.3–0.6 m resolution) satellite imagery due to the contrast between their guano stain and the surrounding terrain. Our study assessed the utility of VHR imagery for making indirect assessments of changes in colony size.
Alexandra J. Strang, Dean P. Anderson, Esme Robinson, Grant Ballard, Annie E. Schmidt, David G. Ainley, Kerry Barton, Fiona Shanhun, Elissa Z. Cameron, Michelle A. LaRue   +9 more
wiley   +1 more source

Robustness analysis of YOLO and faster R-CNN for object detection in realistic weather scenarios with noise augmentation. [PDF]

Sci Rep
Gholinavaz S, Saeedi N, Gharehveran SS.
europepmc   +1 more source

Wisdom and Evil [PDF]

, 2013
Snow, Nancy E.
core   +1 more source

Cameras do not always take a full picture: wolf activity patterns revealed by accelerometers versus road‐positioned camera traps

Remote Sensing in Ecology and Conservation, EarlyView.
Camera traps have become an increasingly popular non‐invasive alternative to animal‐attached devices for studying wildlife behaviour. This study compared wolf (Canis lupus) activity patterns derived from collar accelerometers and road‐positioned camera traps and revealed strong overall agreement but also important seasonal and diel mismatches between ...
Katarzyna Bojarska, Michał Żmihorski, Morteza Naderi, J. David Blount, Mark Chynoweth, Emrah Coban, Çağan H. Şekercioğlu, Josip Kusak   +7 more
wiley   +1 more source

Vulnerability of alpine butterfly eggs to early winter warming. [PDF]

Curr Res Insect Sci
Turnbull KF, Elliott-Graves A, Anthony SE, Roland J, Matter SF, Sinclair BJ.   +5 more
europepmc   +1 more source

Using time‐series remote sensing to identify and track individual bird nests at large scales

Remote Sensing in Ecology and Conservation, EarlyView.
Time‐series airborne imagery can potentially track individuals over time to collect information beyond one‐off counts. Using weekly UAS‐based imagery of wading bird colonies, we develop an automated approach to identifying nests. Our algorithmic approach detected 68–74% of known nests and exhibited similar performance to human review of imagery ...
S. K. Morgan Ernest, Lindsey A. Garner, Ben G. Weinstein, Peter Frederick, Henry Senyondo, Glenda M. Yenni, Ethan P. White   +6 more
wiley   +1 more source

Prospective Quasi-Experimental Study of Postoperative Pain Following Class II Composite Restorations Using the Snow-Plow and Resin-Coating Techniques. [PDF]

J Clin Med
Al-Haddad A, Alwahesh T, Dweikat T, Sharayiah D, Sabrah A, Elkarmi R.   +5 more
europepmc   +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

Field study for the impact of rain-on-snow events on snow cover during snow accumulation period. [PDF]

iScience
Yang Z, Chen R, Liu Z, Wang X, Liu G, Bian S, Li X.   +6 more
europepmc   +1 more source