Results 41 to 50 of about 102,713 (346)
Journal de la Société des Américanistes, 2017 The zoomorphic images used to represent the different periods that form the Mayan Long Count have never been explained in a global way and their meaning remains poorly understood.
Rogelio Valencia Rivera
doaj +1 more source
Signal transmission through the dark-adapted retina of the toad (Bufo marinus). Gain, convergence, and signal/noise. [PDF]
, 1990 Responses to light were recorded from rods, horizontal cells, and ganglion cells in dark-adapted toad eyecups. Sensitivity was defined as response amplitude per isomerization per rod for dim flashes covering the excitatory receptive field centers.
Copenhagen, David, Hemilä, S, Reuter, T
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Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space
Advanced Robotics Research, EarlyView.A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo +6 more
wiley +1 more source
Creation of temporary ponds for amphibians in northern and central Europe [PDF]
, 2001 More than 4000 ponds have been created or restored in Denmark since 1985 as part of a large-scale pond-digging programme to protect endangered amphibians in particular and pond flora and fauna in general.
Briggs, Lars
core
Bayesian three-dimensional reconstruction of toothed whale trajectories: Passive acoustics assisted with visual and tagging measurements [PDF]
, 2012 The author describes and evaluates a Bayesian method to reconstruct three-dimensional toothed whale trajectories from a series of echolocation signals.
Laplanche, Christophe
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Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
The European Zoological Journal, 2020 Many features of the urban environment, such as a warmer microclimate, can positively affect populations of birds and mammals inhabiting cities, while at the same time may affect amphibians negatively.
J. Mazgajska, T. D. Mazgajski
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Atelophryniscus, Atelophryniscus chrysophorus [PDF]
, 2017 Number of Pages: 13Integrative BiologyGeological ...
McCranie, James R.
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Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots
Advanced Robotics Research, EarlyView.This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu +5 more
wiley +1 more source