منابع مشابه
Adaptive evolution toward larger size in mammals.
The notion that large body size confers some intrinsic advantage to biological species has been debated for centuries. Using a phylogenetic statistical approach that allows the rate of body size evolution to vary across a phylogeny, we find a long-term directional bias toward increasing size in the mammals. This pattern holds separately in 10 of 11 orders for which sufficient data are available...
متن کاملInternally Club and Approachable for Larger Structures
We generalize the notion of a fat subset of a regular cardinal κ to a fat subset of Pκ(X), where κ ⊆ X. Suppose μ < κ, μ<μ = μ, and κ is supercompact. Then there is a generic extension in which κ = μ++, and for all regular λ ≥ μ++, there are stationarily many N in [H(λ)]μ which are internally club but not internally approachable. Suppose μ is an infinite cardinal. A set N is internally approach...
متن کاملReinforcement Sailing
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...
متن کاملSailing through uncertainty.
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...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Methods
سال: 2006
ISSN: 1548-7091,1548-7105
DOI: 10.1038/nmeth0506-340