Now showing items 1-4 of 4
Rubber rolling over a sphere
(Maik Nauka/Interperiodica/Springer, 2007-04)
Rubber coated bodies rolling over a surface satisfy a no-twist condition in addition to the no slip condition satisfied by 'marble' coated bodies . Rubber rolling has an interesting differential geometric appeal because ...
Vortex pairs on surfaces
(Amer Inst Physics, 2009)
A pair of infinitesimally close opposite vortices moving on a curved surface moves along a geodesic, according to a conjecture by Kimura. We outline a proof. Numerical simulations are presented for a pair of opposite ...
Perfectly random sampling of truncated multinormal distributions
(Applied Probability Trust, 2007-12)
The target measure mu is the distribution of a random vector in a box B, a Cartesian product of bounded intervals. The Gibbs sampler is a Markov chain with invariant measure mu. A 'coupling from the past' construction of ...
Self-propulsion of N-hinged 'Animats' at low Reynolds number
Optimal locomotion of micro-organisms (on a small Reynolds number flow) can be regarded as a sub-riemannian geometry on a principal bundle with a mechanical connection. Aiming at robotic applications, flagella are modeled ...