Hi Richard, Kerstin, there is also the somewhat old work by Allen (Managing the flow of Technology? Sometime late 70s) noting that face-to-face interaction drops drastically beyond 30 meters IIRC, it seems to be very similar to Kerstin’s study in the distance range. I think recognition of people and/or facial expression was involved in the reasoning but it was quite a while ago I looked at it. Best Daniel ____________ Daniel Koch KTH School of Architecture [log in to unmask]<mailto:[log in to unmask]> www.arch.kth.se<http://www.arch.kth.se> | www.kth.se/profile/dkoch/<http://www.kth.se/profile/dkoch/> +46 8 790 60 25 Editor, Journal of Space Syntax joss.bartlett.ucl.ac.uk<http://joss.bartlett.ucl.ac.uk> Architecture in the Making Vice Director www.architectureinthemaking.se<http://www.architectureinthemaking.se> Architectural Morphology www.archmorphstockholm.se<http://www.archmorphstockholm.se> 7th International Space Syntax Symposium www.sss7.org<http://www.sss7.org> On 22 Nov 2017, at 18:14, Kerstin Sailer <[log in to unmask]<mailto:[log in to unmask]>> wrote: Dear Richard, I've done some VGA analysis with a visibility threshold to more realistically model experiences in large open-plan buildings and what might be considered 'meaningful interactions'. I've done this for two buildings very recently, the Crick (large new science lab in London) and a large technology company - both buildings have large atria as well, so visibility is interesting to model. This is so hot off the press that I haven't yet been able to publish, but I'm happy to share experiences off line. Just ping me privately, if you're interested. We've assumed a 25m cut off to model potential for 'meaningful interactions', based on a study we found by psychologists (who tested face recognition of celebrities at a distance / with pixellated views). The study is by Loftus and Harley in 2005 and the paper is called "Why is it easier to identify someone close than far away". We haven't really found anything else on what distance would be reasonable, but 25m seemed to produce reasonable results, especially with views across the atrium. I hope that helps. Best, Kerstin On 22-Nov-17 12:15, Richard Schaffranek wrote: Dear all, I am currently working on a large scale open-space office. For that I am using VGA (and yes before you ask computation for this takes about 6hours for 0.5Meter resolution) as it is that large I was wondering if anyone has applied Radius with VGA analysis and if there are any publications on it? (Couldn’t find anything but maybe just the wrong words). I was thinking of using a metric radius of 50 meters and maybe a step radius of 2-3? Best Richard -- Dr Kerstin Sailer Reader in Social and Spatial Networks Space Syntax Laboratory The Bartlett School of Architecture University College London (UCL) 22 Gordon Street London WC1H 0QB UK T: +44 (0) 20 3108 9031 E: [log in to unmask]<mailto:[log in to unmask]> W: www.ucl.ac.uk/bartlett/architecture/research/space-syntax-laboratory/<http://www.ucl.ac.uk/bartlett/architecture/research/space-syntax-laboratory/> W: www.ucl.ac.uk/bartlett/architecture/dr-kerstin-sailer<http://www.ucl.ac.uk/bartlett/architecture/dr-kerstin-sailer> W: www.spaceandorganisation.org<http://www.spaceandorganisation.org/> T: www.twitter.com/kerstinsailer<http://www.twitter.com/kerstinsailer>