Edith Cowan University

About: Edith Cowan University is a education organization based out in Perth, Western Australia, Australia. It is known for research contribution in the topics: Population & Context (language use). The organization has 4040 authors who have published 13529 publications receiving 339582 citations. The organization is also known as: Edith Cowan & ECU.

Seasonal production regimes off south-western Australia: influence of the Capes and Leeuwin Currents on phytoplankton dynamics

Abstract: Temporal primary production dynamics were investigated off south-western Australia, where the summer upwelling regime of the Capes Current was compared with early winter conditions characterised by strengthened near-shore Leeuwin Current flow. Seasonal upwelling in this region sourced nitrate levels of ≥1 μm from the nutricline at the base of the Leeuwin Current’s mixed layer, with total water column production reaching a maximum of ~950 mg C m−2 day−1 in the Capes Current. Stable isotope signatures of particulate matter indicated that productivity off south-western Australia was heavily reliant on nitrate as a nitrogen source, with mean δ15N ranging from ~4 to 5 ‰ under both upwelling and non-upwelling (winter) conditions. Unexpectedly, significant nutrient enrichment within the Leeuwin Current (up to 3.1 μm nitrate) occurred during winter, likely as a result of the meandering Leeuwin Current flooding the inner shelf north of the study area and entraining relatively high-nutrient shelf waters in its southwards flow. However, early winter production under these nutrient-replete conditions (mean ± s.d. 310 ± 105 mg C m−2 day−1) was significantly lower than in summer (695 ± 140 mg C m−2 day−1) due to light limitation, both as a result of reduced surface irradiance characteristic of the winter months and significantly higher light attenuation within the water column as compared with summer conditions.

Differential information and the underpricing of initial public offerings: australian evidence

Abstract: This paper provides evidence on underpricing in Australia using 340 industrial initial public offerings over the period 1980 to 1990. It aims to explain why underpricing is consistent with rational behaviour by focusing on differential information across IPO firms. We measure differential information along two dimensions, the quality and the quantity of information. We propose that the quality of information is reflected in the reputation of independent advisers to the preparation of the issuing firm's prospectus. Three such independent external advisers are examined: the investigating accountant, the underwriter, and the expert. The results provide strong support for the reputation effect of the underwriter on underpricing. Although there is evidence showing a negative relation between underpricing and the reputation of the investigating accountant and the expert, it is not significant. Our results also support the differential quantity of information hypothesis. Firms with more information available are, on average, less underpriced.

Review on manufacture by selective laser melting and properties of titanium based materials for biomedical applications

Abstract: Titanium (Ti) based materials are deemed one type of the best metallic materials for biomedical application due to their good mechanical properties, high biocompatibility and corrosion resistance. Design and manufacture of complex shape Ti parts with good quality are highly demanded in biomedical areas. Selective laser melting (SLM), an additive manufacturing technology, is able to produce bulk structural parts almost without geometric constraints. This review paper briefly evaluates the work carried out on the significance of Ti materials, SLM technology and SLM manufacturing of Ti materials commonly used for biomedical applications including the microstructures and mechanical properties of resulting bulk dense parts (Ti, Ti–24Nb–4Zr–8Sn, Ti–6Al–4V, Ti–6Al–7Nb, Ti–TiC and Ti–TiB) as well as the porous structures successfully produced by SLM. This review indicates that SLM produced Ti materials are able to fulfill the biomechanical and biocompatibility requirements and can be considered as potential candi...