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This paper demonstrates how activity theoretic concepts can be used in conjunction with an ethnographically informed approach to derive requirements on a work situation. We present a case study based on a series of collaborative design episodes, the structured description derived from it and show how a preliminary set of contextually-grounded requirements(More)
The New Zealand native legume flora are represented by four genera, Sophora, Carmichaelia, Clianthus, and Montigena. The adventive flora of New Zealand contains several legume species introduced in the 19th century and now established as serious invasive weeds. Until now, nothing has been reported on the identification of the associated rhizobia of native(More)
The aim of this study was to examine the bacterial composition of high latitude soils from the Darwin–Hatherton glacier region of Antarctica. Four soil pits on each of four glacial drift sheets were sampled for chemical and microbial analyses. The four drifts—Hatherton, Britannia, Danum, and Isca—ranged, respectively, from early Holocene (10 ky) to(More)
This paper discusses the introduction of a wireless network of personal digital assistants into a specialist unit of a hospital in Edinburgh. All of the technology has been used 'off-the-shelf' and 'out-of-the-box'. While we are able to report that the heterogeneous elements of this implementation have been integrated, work well together and that the users(More)
Biofilm-based technologies, such as moving bed biofilm reactor (MBBR) systems, are widely used to treat wastewater. Biofilm development is important for MBBR systems as much of the microbial biomass is retained within reactors as biofilm on suspended carriers. Little is known about this process of biofilm development and the microorganisms upon which MBBRs(More)