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A cross-sectional matched control study was designed to investigate the impact of hospitalization and MRSA isolation on the psychological functioning of older adults undergoing rehabilitation.Twenty-two MRSA-positive and 20 MRSA-negative older adults completed standardized measures relating to depression, anxiety and anger. Both groups of participants had… (More)
The celebrated Urysohn space is the completion of a countable universal homogeneous metric space which can itself be built as a direct limit of finite metric spaces. It is our purpose in this paper to give another example of a space constructed in this way, where the finite spaces are scaled cubes. The resulting countable space provides a context for a… (More)
The operation of switching a finite graph was introduced by Seidel, in the study of strongly regular graphs. We may conveniently regard a graph as being a 2-colouring of a complete graph; then the extension to switching of an m-coloured complete graph is easy to define. However, the situation is very different. For m > 2, all m-coloured graphs lie in the… (More)
We investigate the filter generated by vertex neighbourhoods in the countable random graph R, and two related topologies, with emphasis on their automorphism groups. These include a number of highly transitive groups containing Aut(R).
Let R m be the (unique) universal homogeneous m-edge-coloured countable complete graph (m ≥ 2), and G m its group of colour-preserving automorphisms. The group G m was shown to be simple by John Truss. We examine the automorphism group of G m , and show that it is the group of permutations of R m which induce permutations on the colours, and hence an… (More)