The Sifted Grain and the Grain Sifters

The Grain of Vision and the Grain of Attention

Often when there is no attention to an object, there is no conscious perception of it either, leading some to conclude that conscious perception is an attentional phenomenon. There is a well-known perceptual phenomenon—visuo-spatial crowding, in which objects are too closely packed for attention to single out one of them. This article argues that there is a variant of crowding—what I call ‘‘ide...

Against the Grain

Going against the Grain

We review a general, space and time eecient technique for delivering a sequence of values computable by a recurrence relation, in the order opposing the data-dependencies of the recurrence. The technique provides a series of time/space tradeoos we characterize by parameter K > 0. Namely, N values can be delivered against the grain in O(KN) time and O(KN 1=K) space. This basic idea is not new, b...

Going against the Grain

2748 The data that would change the course of Jonathan Tilly’s career and cause an uproar in the field of ovarian biology almost never saw the light of day. In Tilly’s cell death lab, postdoctoral fellow Tomoko Kaneko had twice repeated her experiments to kill off mouse egg cells, but something was wrong because the egg cell numbers were still high after treatment with a chemotherapy drug. Kane...

Increasing the Effectiveness of the Russian Grain Market

Considering the current upward drift in farm use all over the world, the Russian agro-food market has immense possibilities to create such economic conditions under which the farming sector could develop dynamically. The increase in the grain production is of crucial importance for all agricultural branches. In this respect, the grain sector is Russia’s strategically significant economic segmen...