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 کاملTowards hierarchical blackboard mapping on a whiskered robot
The paradigm case for robotic mapping assumes large quantities of sensory information which allow the use of relatively weak priors. In contrast, the present study considers the mapping problem for a mobile robot, CrunchBot, where only sparse, local tactile information from whisker sensors is available. To compensate for such weak likelihood information, we make use of low-level signal processi...
متن کاملWhiskered tori with pre xed frequencies and Lyapunov spectrum
A classical mechanics problem, as the existence of whiskered tori for an almost integrable hamil-tonian system, is analyzed with techniques reminiscent of the quantum eld theory, following the strategy developed in recent works about the matter. The system consists in a collection of rotators interacting with a pendulum via a small potential depending only on the angle variables. The proof of t...
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...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2015
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.6641