Our visual system can easily estimate the constant color and material of external objects despite dynamic changes in the retinal image across viewpoints and illuminations in natural scenes. It is commonly believed that this high-level visual function, called "perceptual constancy," is acquired through postnatal learning [1], building upon low-level functions that have developed earlier, such as...

By (a) using an expression for the lattice potential of QCD in terms of a continuum running coupling and (b) globally parameterizing this coupling to interpolate between 2(or higher-) loop QCD in the UV and the flux tube prediction in the IR, we can perfectly fit lattice data for the potential down to one lattice spacing and at the same time extract the running coupling to high precision. This ...

A total of 269 steers produced in a four-breed diallel mating design of Simmental, Limousin, Polled Hereford, and Brahman breeds were evaluated for the unadjusted and maintenance-adjusted total feed intake to total weight gain ratio. Time on feed ranged from 184 to 251 d. Covariate adjustments were made separately for age- and 12th rib fat-constant end points. Purebred, general combining abilit...