منابع مشابه
Sex - specific food choices in Whiskered Terns
individual decisions concerning the trade-off between somatic and reproductive investment (Dänhardt et al. 2011). Birds feeding chicks should deliver the most nutritious and optimally sized prey items to chicks in order to maximise chick growth (Baird 1991). How ever, whether a parent delivers prey to chicks or eats it itself, depends not only on prey value but also on the time and energy cost ...
متن کاملPredictive Prey Pursuit in a Whiskered Robot
Highly active small mammals need to capture prey rapidly and with a high success rate if they are to survive. We consider the case of the Etruscan shrew, which hunts prey including crickets almost as large as itself, and relies on its whiskers (vibrissae) to complete a kill. We model this hunting behaviour using a whiskered robot. Shrews strike rapidly and accurately after gathering very limite...
متن کاملWhiskered and Low Dimensional Tori in Nearly Integrable Hamiltonian Systems
We show that a nearly integrable hamiltonian system has invariant tori of all dimensions smaller than the number of degrees of freedom provided that certain nondegeneracy conditions are met. The tori we construct are generated by the resonances of the system and are topologically different from the orbits that are present in the integrable system. We also show that the tori we construct have st...
متن کاملSCRATCHbot: Active Tactile Sensing in a Whiskered Mobile Robot
The rodent vibrissal (whisker) system is one of the most widely investigated model sensory systems in neuroscience owing to its discrete organisation from the sensory apparatus (the whisker shaft) all the way to the sensory cortex, its ease of manipulation, and its presence in common laboratory animals. Neurobiology shows us that the brain nuclei and circuits that process vibrissal touch signal...
متن کاملThe Norfolk and Norwich Hospital
" Provident Scheme " on the lines referred to by you in connection with this hospital, and your report only referred to a scheme which was proposed at a meeting in a neighbouring town, but which could not be accepted by this hospital. The reason of the hospital's inability to accept such a provident scheme is due to the fact that we have had in operation for the last 18 months a contributory sc...
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ژورنال
عنوان ژورنال: Oryx
سال: 1953
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605300036279