I believe, personally, that social-tie density will drop because you can't really move freely anymore with the population increases.
As a consequence, Pentland says, Zurich enjoys all of the productivity benefits of social-tie density with much lower crime rates.
According to MIT researcher Wei Pan, there is a connection between population density and innovation that she calls "social-tie density": the denser a city is, the more interactions people will have, and the more innovative the city will be (and the more patents it will produce).
One thing that is striking about the M.I.T. research into "social-tie density," though, is what it says about... Apparently it can congest the "superlinear scaling," or increasingly rising productivity, that would ordinarily take place in cities as they become more packed.
Recently, it has been suggested that cities are special because the increased urban population density leads to super-linear scaling in social tie density, thus facilitating super-linear scaling of information spreading [15].
Sandström and Carlsson (2008) showed that high tie density promotes joint-action, especially when many ties exist between different types of actors (e.g., between recreational fishermen and governmental officials).
The coordinating group is an exception here, their highest tie density shifts along with the issue at stake (flood protection or nature), so the coordination group interacts most strongly with flood protection group in the blue network, and with the nature group in the green network.
For test temperatures higher than EPR Tg the ethylenic crystallinity exhibited by the EPRTi phase was considered to induce toughening deterioration by decreasing tie molecules density in the EPRTi domains, notwithstanding the beneficial effect of the ethylenic build-up.
The symmetrized friendship network had 159 nodes, 302 ties, and a density of 1.2%.
The potential of the aromatase gene functioning as an oncogene within the breast may be tied to breast density which in turn may represent both a selection tool for elevated risk and an intermediate marker of prevention.
