Cells that remained in the highly populated center (core) showed greater intercellular adhesion and were more rounded in appearance.
"They're building networks of enclaves that everybody knows about, with densely populated cores and surrounding gated communities, and special golf courses and accesses to airports that fly them in and out.
In addition, it is well-known in the urban research literature that population density exhibits heterogeneous geographic distribution patterns [16], typically reflecting a more densely populated urban core and a more sparsely populated periphery.
The results suggest that residents in the densely populated city core have a comparable CF to residents living in outer city suburbs, thus contradicting previous studies supporting the notion that densely populated inner-city areas yield relatively lower CFs.
In the second sensitivity analysis (S2), which considers the mortality effect of letting only anthropogenic O3 precursor emissions increase in the 2050s, the relative increase in mortality projections fell slightly below the M1 base case, owing to diminished O3 concentrations in the 2050s in the most densely populated urban core areas.
Third, in densely populated urban cores there were often trucks, buses, construction sites, etc. that blocked the view of the side of the road.
Between 1970 and 1997 Frankfurt, the German financial center, saw its core population drop, while the less densely populated suburban periphery, now extending to as much as 50 to 80 kilometers away, expanded dramatically.
The Democratic Republic of Congo (DR Congo), the largest state in sub-Saharan Africa, was carved within awkward colonial borders, which resulted in a constellation of populated peripheries with no core, spontaneously fissiparous, and ungovernable as a unitary state [ 24].
The people of Wales are unevenly distributed in a largely concentric settlement pattern: sparsely populated uplands are at the core, surrounded by bands of gradually increasing population density that culminate on the coasts and the English border.
