Huge gaps by race and class persist: the average black high school senior's reading scores on the National Assessment of Educational Progress continue to be at the level of the average white eighth grader's.
The relationship between mat and the working classes persists.
The perception of 8 Mile as the chief dividing line between racial groups and classes persists, in part because the suburban counties of Oakland and Macomb remain, on the whole, significantly whiter and more prosperous than the city of Detroit.
Given a filtration K ⊂ ⋯ ⊂ K n of embedded simplicial complexes (an ordering), persistent homology records homology classes persisting between two indices i and j, i.e. cycles that remain non-boundaries from i until at least j (these could be killed by a boundary appearing later on).
Large health disparities between states, between rural and urban populations, and across social classes persist.
As many authors have noted, the recent retreat from marriage is mostly a middle American phenomenon, and it does seem like the Clinton-era stabilization of family life for the upper classes persisted into the Bush and Obama eras as well.
The objectives of this sampling and study were to identify at the compound class level the unidentified 40 60% of wastewater organic contaminants, and to determine what organic compound classes were being removed by the wastewater pretreatment plant, and what organic compound classes persisted during subsurface waste migration.
We observed that some of the classes persist through all the values of R analyzed: they are all the classes in LCb (c2b, c16b, c4b, c14b), plus c0 and c2s in LCs.
They sought to ban the practice with prohibitions in 963 and 972; despite this, cremation amongst the poor and middle classes persisted.
These classes persist until index one, at which they get all killed but one.
