Sailing and swimming
نویسندگان
چکیده
منابع مشابه
Sailing, Swimming and Pumping at low Reynolds numbers
We derive equations relating sailing, swimming and pumping at low Reynolds numbers. The relations are general and hold for arbitrary three dimensional swimmers in receptacles with arbitrary geometry. Our main result is the additivity of power: Ps = Pp + Pg where s, p, g stand for swimming, pumping and gliding. We show that, in general, optimal pumps and optimal swimmers have different geometrie...
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This thesis examines applying reinforcement learning to sailing. We give two conceptually different models of a simple sailing boat. Standard tabular reinforcement learning is shown to be ineffective in controlling these naturally continuous models. We examine a method [Smith, 2001b] which adaptively quantises both the state and action spaces and show that it has similar performance to the tabu...
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It is noted that a surface layer of matter in contact with a sufficiently superEddington, radially combed photon flux typically attains a relativistic coasting state whereby the radiation does not accelerate the matter. Radiation that scatters off this layer is most likely to be observed along the velocity vector of the matter, where it would be strongly polarized. Subject headings: black hole ...
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choice but to pursue science. My dad wouldn’t accept anything but a science degree. He told me in no uncertain terms that if I really wanted to be an English major or a writer, as I said I did, I would need to figure out how to pay for college on my own. I chose a school 2000 miles from home and overloaded my schedule with literature classes that I claimed were required, but I wasn’t brave or i...
متن کاملMathematical Theory of Sailing
We show by computational solution of the incompressible Navier-Stokes equations with friction force boundary conditions, that the classical inviscid circulation theory by Kutta-Zhukovsky for lift and laminar viscous boundary layer theory by Prandtl for drag, which have dominated 20th century fluid dynamics, do not correctly describe the real turbulent airflow around a sail under tacking. We sho...
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ژورنال
عنوان ژورنال: British Journal of Sports Medicine
سال: 2001
ISSN: 0306-3674
DOI: 10.1136/bjsm.35.3.208