> I am doing a literature search on the issue of permeability (for
> people, vehicles etc) ... Can anyone suggest anything I am missing?
There are a few papers by Alain Chiradia on permeability and transport.
I don't know if you've been through the proceedings of previous Space
Syntax Symposia, but some of them have all their papers on the web -
there's bound to be a fair bit about permeability and transport in
there, albeit predominantly within the Hillier paradigm.
There are also a couple of Space Syntax papers on cycle
flows and space-syntax measures of permeability:
1) written for Central London Partnership [CLP] from 1999/2000 - Rose
Ades at TfL may be able to get you a copy: IIRC it was paid for by
public money routed via the CLP, so should come under Freedom of
Information.
2) There was a later Space Syntax paper on the same subject, though it
was flawed in the early drafts I saw - I don't know if the published
version was better: it confused flows with route choice, and when it
comes to axial maps, there is a categorical difference. It was by Noah
Raford and may have Alain Chiradia as co-author.
There's Sergio Porta's work as well, and some stuff by Juan Alayo
from around 2003 give or take a couple of years on permeability and
other measures of urban space, which went into Arup's City Matters model.
There's a paper from around 2004 by me, Jake Desyllas and Elspeth
Duxbury on the validation of a pedestrian flow model based on a small
number of variables, one of which is a permeability metric.
Wasn't Graham Paul Smith of Brookes looking at permeability, and landed
on the optimality of the grid, back in the mid-1990s?
Sorry, I'm in a rush now, but hope these give some leads.
Regards,
Andrew Smith
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