Results 21 to 30 of about 76,052 (267)

A new low-turbulence wind tunnel for animal and small vehicle flight experiments [PDF]

open access: yesRoyal Society Open Science, 2017
Our understanding of animal flight benefits greatly from specialized wind tunnels designed for flying animals. Existing facilities can simulate laminar flow during straight, ascending and descending flight, as well as at different altitudes. However, the
Daniel B. Quinn   +3 more
doaj   +1 more source

Dynamic echo information guides flight in the big brown bat

open access: yesFrontiers in Behavioral Neuroscience, 2016
Animals rely on sensory feedback from their environment to guide locomotion. For instance, visually guided animals use patterns of optic flow to control their velocity and to estimate their distance to objects (e.g. Srinivasan et al. 1991, 1996). In this
Michaela eWarnecke   +4 more
doaj   +1 more source

Sensory-thresholded switch of neural firing states in a computational model of the ventromedial hypothalamus

open access: yesFrontiers in Computational Neuroscience, 2022
The mouse ventromedial hypothalamus (VMH) is both necessary and sufficient for defensive responses to predator and social threats. Defensive behaviors typically involve cautious approach toward potentially threatening stimuli aimed at obtaining ...
Ryan Rahy   +2 more
doaj   +1 more source

Realistic modeling of bird flight animations [PDF]

open access: yesACM Transactions on Graphics, 2003
In this paper we describe a physics-based method for synthesis of bird flight animations. Our method computes a realistic set of wingbeats that enables a bird to follow the specified trajectory. We model the bird as an articulated skeleton with elastically deformable feathers.
Jia-chi Wu, Zoran Popović
openaire   +1 more source

The Critical Role of Head Movements for Spatial Representation During Bumblebees Learning Flight

open access: yesFrontiers in Behavioral Neuroscience, 2021
Bumblebees perform complex flight maneuvers around the barely visible entrance of their nest upon their first departures. During these flights bees learn visual information about the surroundings, possibly including its spatial layout.
Charlotte Doussot   +2 more
doaj   +1 more source

Flight Zone as an Alternative Temperament Assessment to Predict Animal Efficiency

open access: yesProceedings, 2020
Animal temperament evaluation can be included in the cattle selection program also because of an existing correlation with performance. However, there are different assessment methods such as flight speed (time and speed that an animal takes to leave the
Mariano Parra   +8 more
doaj   +1 more source

Wolf Responses to Experimental Human Approaches Using High-Resolution Positioning Data

open access: yesFrontiers in Ecology and Evolution, 2022
Humans pose a major mortality risk to wolves. Hence, similar to how prey respond to predators, wolves can be expected to show anti-predator responses to humans. When exposed to a threat, animals may show a fight, flight, freeze or hide response. The type
Erik Versluijs   +6 more
doaj   +1 more source

Radar Aeroecology

open access: yesRemote Sensing, 2020
Aeroecology is an emerging discipline founded by Tom Kunz and colleagues in the early 2000s to address the challenges of studying animal flight in the lower atmosphere [...]
Jeffrey F. Kelly, Phillip M. Stepanian
doaj   +1 more source

North American Animated Flight Atlas

open access: yesJournal of Maps, 2007
Abstract There are many different landscapes. The landscape mapped here forms in the sky as thousands of aircraft are carefully choreographed by ground control to ferry passengers from one place to another. It is this landscape of constantly moving air traffic that is the subject of a new atlas.
M.P. Peterson, J. Wendel
openaire   +1 more source

Limitations on Animal Flight Performance [PDF]

open access: yesJournal of Experimental Biology, 1991
ABSTRACT Flight performance seems to change systematically with body size: small animals can hover and fly over a wide range of speeds, but large birds taxi for takeoff and then fly over a narrow speed range. The traditional explanation for this is that the mass-specific power required for flight varies with speed according to a U-shaped
openaire   +1 more source

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