Commentary on Section 264 of ITAA 1936: commissioner may require information and evidence
Dabner, Justin
2007-01-01
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In most manufacturing systems the contribution of human labour remains a vital element that affects overall performance and output. Workers’ individual performance is known to be a product of personal attitudes towards work. However, in current system design processes, worker performance variability is assumed to be largely insignificant and the potential impact of worker attitudes is ignored. This paper describes a field study that investigated the extent to which workers’ production task cycle times vary and the degree to which such variations are associated with attitude differences. Results show that worker performance varies significantly, much more than is assumed by contemporary manufacturing system designers and that this appears to be due to production task characteristics. The findings of this research and their implications ...
School of Management
School of Management
Public policy requires public support, which in turn implies a need to enable the public not just to understand policy but also to be engaged in its development. Where complex science and technology issues are involved in policy making, this takes time, so it is important to identify emerging issues of this type and prepare engagement plans. In our horizon scanning exercise, we used a modified Delphi technique [1]. A wide group of people with interests in the science and policy interface (drawn from policy makers, policy adviser, practitioners, the private sector and academics) elicited a long list of emergent policy issues in which science and technology would feature strongly and which would also necessitate public engagement as policies are developed. This was then refined to a short list of top priorities for policy makers. Thirty ...
Raised plasma homocysteine (Hcy) levels have been cited as a major risk factor for
several vascular disorders. Yet hyperhomocysteinaemia is easily treated through dietary intervention and vitamin supplementation.
Commercial assays have facilitated routine plasma Hcy analysis. However, the problem faced by clinicians is stabilisation of Hcy in whole blood samples prior to delivery to the laboratory. Following blood collection, erythrocytes continue to produce and excrete Hcy increasing plasma concentrations by up to 10% per hour.
This thesis describes the investigation of stabilising plasma Hcy in whole blood,
allowing wide scale screening for hyperhomocysteinaemia. The most effective method appears to be inhibition of the enzyme responsible for Hcy production, Sadenosylhomocysteine hydrolase (SAHH), using a competitive inhibitor 3-
dea...
Experiments were performed on an industrial scale Silverson in-line rotor-stator mixer to
investigate its liquid-liquid dispersion capabilities. A non-coalescing kerosene-water
system was used in the tests and the effect of stator geometry, rotor-speeds, flowrates and
dispersed phase concentrations on the droplet size distribution was investigated.
The rotor-speed and the dispersed phase concentration were found to have the most
influence on droplet size. Drop sizes were also seen to increase with an increase in open
area. No differences were observed in the droplet sizes or power draw of the stators
with the smallest and similar open areas (Emulsor Screens and Square Hole High Shear
screen). The power supplied to the fluid was proportional to N3 indicating the mixer was
operating under turbulent conditions. d32 was correlated against ...
