This describes work, in the last
decade, with Bob Snowdon and Brian Warboys, and earlier with David Rhydeard. We have produced
the following set of papers
This describes work with Peter Henderson and Bob Snowdon. It resulted in a paper, defining POSD, published in 1995
This describes work, in 1994, with Jeff Parker, Bob Snowdon and Jane Searles,. It used a bone-like notation that was a precursor to POSD
Jane Searles and Roger Duck have developed a series of workshops, allowing teams involved with a large
systems (organisational or technical) to explore the problems, encountered at the boundaries between them.
The used the term "Shared Behaviour" from POSD, to emphasise the importance and potential complexity, of the
systems at these boundaries. See a paper published in 2021
my email address is
See a paper that defined the POSD Alvey projecrt, published in ????
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