The need to understand, model and predict urban water consumption is paramount, particularly with urban densities increasing throughout the world. Specifically, it is vital to determine potable water savings, daily demand patterns and actual end use water consumption experienced in diversified water supply schemes in order to verify planning estimates and justify the future application of such schemes. This paper details the results of a mixed methods (quantitative and qualitative) end use investigation, pre-and post-commissioning of recycled water, in a dual reticulated supply scheme in the master planned Pimpama Coomera region, Gold Coast, Australia. Recycled water, supplied for irrigation and toilet flushing, accounted for 59.1 L/p/d or 32.2% of total consumption post-commissioning, with irrigation being 28.9 L/p/d or 15.7%. Furthermore, developed end use diurnal patterns demonstrate the unique daily demand consumption within the region and significant reductions in peak potable water demand when compared with single reticulated supply areas. The paper concludes with discussions of implications for better informed water services infrastructure planning activities.

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This paper presents an interactive computerized teaching suite developed for the design of combinatorial and sequential logic circuits. This suite fills a perceived gap in the currently available computer-based teaching software, with the purpose of providing alternative-mode subject delivery. The authors were, therefore, prompted to develop a Microsoft-Windows tutorial suite, WinLogiLab, comprising a set of interactive tutorials that show the link between Boolean algebra and digital combinatorial and sequential circuits. The combinatorial tutorials follow the initial design steps: from Boolean algebra, to truth tables, to minimization techniques, to production of the combinatorial circuit in a seamless way. Similarly, the sequential tutorials can design simple finite-state counters and can model more complex finite-state automata.

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