Digital Commons Network^™

The Optimisation Of A Turbulent Swirl Nozzle Using Cfd, Brett K. Thomas, Zahir U. Ahmed, Yasir M. Al-Abdeli, Miccal T. Matthews

Research outputs 2013

Swirl is imparted into free and impinging nozzle flows as well as jet flames to affect convective heat transfer, fluid mixing or flame stability. At the nozzle exit plane, the emerging flow strongly influences downstream flow development and so factors which impact upon the emitted flow are worthy of study. This paper presents preliminary CFD analyses into the effect of design parameters and operational settings on the emerging flow at the exit plane for a swirl nozzle (Remax~30,500). The research was conducted in the premanufacture stage to optimise the nozzle. Swirl is aerodynamically generated using multiple tangential ports located upstream …

Multi-Component Adsorption Of Benzene, Toluene, Ethylbenzene, And Xylene From Aqueous Solutions By Montmorillonite Modified With Tetradecyl Trimethyl Ammonium Bromide, Heshmatola Nourmoradi, Mehdi Khiadani, Mahnaz Nikaeen

Research outputs 2013

Multicomponent adsorption of benzene, toluene, ethylbenzene, and xylene (BTEX) was assessed in aqueous solutions by montmorillonite modified with tetradecyl trimethyl ammonium bromide (TTAB-Mt). Batch experiments were conducted to determine the influences of parameters including loading rates of surfactant, contact time, pH, adsorbate concentration, and temperature on the adsorption efficiency. Scanning electron microscope (SEM) and X-ray diffractometer (XRD) were used to determine the adsorbent properties. Results showed that the modification of the adsorbent via the surfactant causes structural changes of the adsorbent. It was found that the optimum adsorption condition achieves with the surfactant loading rate of 200 of the cation …

Plain Language Review Of Cardiovascular Health Among Indigenous Australians, Caitlin Gray

Research outputs 2013

This document summarises, in plain language, information about the cardiovascular health status of Aboriginal and Torres Strait Islander peoples. It provides information about :

• the various cardiovascular diseases and their risk factors
• the extent of cardiovascular disease (CVD) among Aboriginal and Torres Strait Islander people, including prevalence, hospitalisation and death rates
• types and levels of care for Aboriginal and Torres Strait Islander CVD patients
• strategies and programs that aim to improve the cardiovascular health status of Aboriginal and Torres Strait Islander people.

The publication is a plain language summary of the Review of cardiovascular health among Indigenous Australians (2013) by …

Overview Of The Health Of Indigenous People In Western Australia 2013, Neil Thomson, Andrea Macrae, Anomie, Jane Burns, Belinda D'Costa, Caitlin Gray, Joanne Hoareau, Leah Levitan, Miranda Poynton, Kathy Ride, Avinna Trzesinski

Research outputs 2013

This Overview has been prepared by the Australian Indigenous HealthInfoNet as a part of our contributions to ‘closing the gap’ in health between Indigenous people and other Australians by making relevant, high quality knowledge and information easily accessible to policy makers, health service providers, program managers, clinicians, researchers, students and the general community.

The main purpose of the Overview is to provide a comprehensive summary of the most recent indicators of the health of Indigenous people.

Research for this Overview involved the collection, collation, and analysis of a wide range of relevant information, including both published and unpublished material. Sources …

Indirect Measures Of Learning Transfer Between Real And Virtual Environments, Michael J. Garrett, Mark T. Mcmahon

Research outputs 2013

This paper reports on research undertaken to determine the effectiveness of a 3D simulation environment used to train mining personnel in emergency evacuation procedures, designated the Fires in Underground Mines Evacuation Simulator (FUMES). Owing to the operational constraints of the mining facility, methods for measuring learning transfer were employed which did not require real world performance evaluation. Transfer measures that examined simulator performance relative to real world experience, fidelity assessment, and appraisal of the training value of the platform were utilised. Triangulation of results across all three measures indicated the presence of learning transfer, suggesting the viability of indirect measures …

A New Species Of Neocauculus (Acari: Prostigmata: Caeculidae) From Barrow Island, Western Australia, With A Checklist Of World Cauculidae, Christopher Taylor, Nihara Gunawardene, Adrianne C. Kinnear

Research outputs 2013

Neocaeculus imperfectus new species is described from material collected on Barrow Island, Western Australia. Keys to genera and Australasian species of Caeculidae are provided, and the relationship between the genera Neocaeculus and Microcaeculus is discussed. A checklist of species for Caeculidae is provided.

Physiological Demands Of Road Sprinting In Professional And U23 Cycling. A Pilot Study, Paolo Menaspa, Marc Quod, David Martin, James Victor, Chris Abbiss

Research outputs 2013

This pilot study described and compared the power output (absolute, relative to body weight and relative to frontal area) recorded during successful road sprints in professional and under 23 men’s cycling races. The study also described the exercise intensity and requirements of sprinters throughout final 10 min of the race. Nine successful (top 3) sprints performed by a professional (PRO: 23 y old, 1.76 m, 71.8 kg) and an under 23 (U23: 18 y old, 1.67 m, 63.2 kg) cyclist sprinter were analysed in this study. No statistical differences were found in absolute peak and average sprint power (PRO: 1370±51 …

Review Of Physical Activity Among Indigenous People, Caitlin A. Gray, Rona Macniven, Neil J. Thomson

Research outputs 2013

Physical activity is important for all Australians, particularly in the prevention, management and treatment of chronic conditions, and for social and emotional wellbeing. Chronic health conditions, including cardiovascular conditions, endocrine conditions (such as diabetes), and certain cancers, account for 70% of the observed difference in the burden of disease between the Indigenous and non-Indigenous populations. Modifiable risk factors, particularly behavioural determinants such as physical activity, can help to reduce the extent and impact of these conditions, and assist in the prevention, management and treatment of disease. The levels and impacts of physical inactivity are greater for Indigenous people than they …

Review Of Kidney Disease Among Indigenous People, Sasha A. Stumpers, Neil J. Thomson

Research outputs 2013

Kidney disease is a significant health problem for all Australians, but severe kidney disease is more common among Indigenous people than among non- Indigenous people. In particular, the prevalence of chronic kidney disease (CKD) and the overall levels of end-stage kidney disease (ESKD) among Aboriginal and Torres Strait Islander peoples are consistently reported as significantly higher than among other Australians. Information on CKD among Indigenous Australians is available from self-reported survey data, as well as from community-based studies and screening programs [10-20] but the main focus in the literature has been on ESKD. The incidence of ESKD is especially high …

Optical Magnetometer Employing Adaptive Noise Cancellation For Unshielded Magnetocardiography, Valentina Tiporlini, Kamal Alameh

Research outputs 2013

This paper demonstrates the concept of an optical magnetometer for magnetocardiography. The magnetometer employs a standard Least-Mean-Squares (LMS) algorithm for heart magnetic field measurement within unshielded environment. Experimental results show that the algorithm can extract a weak heart signal from a much-stronger magnetic noise and detect the P, QRS, and T heart features and completely suppress the common power line noise component at 50 Hz.

Technique Adjustments Influence The Performance Of Sprint Paddling In Competitive Male Surfers, Jeremy M. Sheppard, Mark Osborne, Dale W. Chapman, Mark Andrews, Phil Mcnamara

Research outputs 2013

The present study evaluated what are considered common and contentious differences in paddling technique within the surfing population, across the three distinct categories of: 1) Paddle Stroke length (Reach); 2) Torso Inclination (Chest Position); and 3) Arm Recovery. To assess the differences among paddling techniques, this study employed a within-subjects comparison of sprint paddling kinematic performance differences. Twenty competitive male surfers (19.1±6.8 years, 168.2±11.3 cm, 61.7±13.6 kg) performed 2 maximal trials each of Long vs. Short Reach, Chest Up vs. Down Position, and High vs. Low Arm Recovery during 15 m sprint paddle trials. The sprint paddle efforts were initiated …

Getting Inside The Black Box Of Technology Integration In Education: Teachers' Stimulated Recall Of Classroom Observations, Jo Tondeur, Lorraine H. Kershaw, Ruben Vanderlinde, Johan Van Braak

Research outputs 2013

This study explored the black box of technology integration through the stimulated recall of teachers who showed proficiency in the use of technology to support teaching and learning. More particularly, the aim of the study was to examine how these teachers use technology in their lessons and to gain deeper insights into the multifaceted influences affecting their current practices. In order to explore this black box, observations and stimulated recall interviews with primary school teachers were conducted in schools which were selected by the inspectorate on the basis of advances they had made in educational technology use. Stimulated recall interviews …

Engaging Students In Peer Review: Feedback As Learning, Catherine Moore, Susan Teather

Research outputs 2013

There is a growing interest in tertiary education in Australia about developing the capacity of learners to evaluate and improve both their own work and that of others (Boud & Falchikov, 2006; Oliver, 2011). In order to successfully direct their own learning beyond university (and engage in lifelong learning), students need to be able to evaluate their performance in relation to a standard, identify gaps, and determine how to bridge them in order to achieve the desired standard if required. One strategy that can be employed to help students achieve this is engaging them actively in a feedback process, so …

Using Sensemaking As A Diagnostic Tool In The Analysis Of Qualitative Data, Megan Paull, Ian Boudville, Helen Sitlington

Research outputs 2013

Analysis of qualitative data is a process which novice researchers must learn as they progress, and which experienced researchers must negotiate and adapt to suit the study they are undertaking and the data they are collected. The purpose of this paper is to demonstrate how researchers can use sensemaking to diagnose and explain phenomena in ordinary situations, and how it can be added as an analysis and interpretation tool in their toolkit. This paper describes the use of sensemaking employed as a tool for diagnosis of the processes which take place when a manager encounters perceived declining performance in an …

Analysing Data From Innovative Designs, Lelia Green

Research outputs 2013

No abstract provided.

Building The Systematic Teaching Of Reading Across Independent Schools: 2011-2012: Final Report, Deslea Konza, Paul Woodley

Research outputs 2013

The PALL project commenced in March 2011 with principals and other school leaders of 19 schools from the Association of Independent Schools in Western Australia, and concluded in November 2012. Participants attended five professional learning modules that centred on the leadership of literacy learning (specifically reading) and carried out activities between modules to connect their learning with practical action in their schools. Supporting these activities was a Mentor, whose task was to assist principals to understand and internalise key messages from the workshops, to implement interventions in reading consistent with the learning undertaken during the modules, and to support leaders …

A Sense Of Home: A Cultural Geography Of The Leschenault Estuary District: Report, Sandra Wooltorton

Research outputs 2013

Executive Summary

In 2012, a project was implemented to determine the place-based social values of the people of the Leschenault Estuary district. The project included a historical study, a literature review, a survey with quantitative and qualitative questions, targeted community engagement (five focus groups, six individual interviews) and a photo-elicitation study with a group of high school children.

Research Question

What is history of the relationship between people and place in the Leschenault Estuary District, and what is the relationship in 2012? What were, and what are the place-based social values of the population?

Expanding The Vision: Synthetic Phonics In Action Ii, Deslea Konza

Research outputs 2013

The Yorke and Mid North - Roxby Downs Area School (YMN-RDAS) Literacy Project in 2013 was largely an extension of the literacy project conducted with the YMN region of the South Australian Department of Education and Child Development in 2012. The 2012 project outcomes were very positive (see Konza, 2013) and funding was made available for continuation of the main elements of the project with another cohort of primary schools in 2013. As was the case with the YMN 2012 project, it was designed to ‘value-add’ to the Principals as Literacy Leaders (PALL) project which had been implemented in the …

Creating Cultural Empathy And Challenging Attitudes Through Indigenous Narratives, Cobie Rudd, Moira Sim, Colleen Hayward, Toni Wain

Research outputs 2013

The poorer health status of Indigenous Australians has been largely attributed to social disadvantage and their marginalisation within mainstream society (Marmot, 2011). This includes access to health care, as well as proximity to health services, availability and cultural appropriateness of health services, transport availability, health insurance, the affordability of health services and patient proficiency in English (AIHW, 2011).

The interpersonal attitudes and behaviours of non-Indigenous health providers, both conscious and unconscious, are also known to contribute to disparities in treatment, impairment of communication between health providers and patients, and consequently, patients’ mistrust of the health system due to negative past …

Building Leadership Capacity In Undergraduate Students: Final Report For Altc Teaching Fellowship, Lynne Cohen

Research outputs 2013

This Fellowship addressed the significant issue of leadership. Its primary focus was researching and developing leadership skills in undergraduate students. The Fellowship was designed to develop and trial a leadership program specifically to enhance the competencies and skills of undergraduate students beyond their discipline knowledge. A group of universities across Australia agreed to participate in a pilot program to respond to the following identified issues.

• The area of leadership development in undergraduates has been under-researched and under-debated in recent work about graduate attributes, generic skills, and work integrated learning.

• There has been considerable focus on leadership development for …

Higher Degree Research Training Excellence: A Good Practice Framework, Joe Luca, Trish Wolski

Research outputs 2013

Over the last decade, the Australian Government has tabled a number of reports targeting improved research and research training outputs from Australian universities. This is placing all Australian universities under increased pressure to promote quality and timely research training outputs.

The Good Practice Framework (GPF) for research training has been developed to respond to the Australian Government’s agenda for research training and to promote Australian excellence in research training. The GPF assists institutions to identify key areas of good practice or gaps when reviewing and evaluating their research training processes and practices...

Innovative Approaches For Investigating How Children Understand Risk In New Media: Dealing With Methodological And Ethical Challenges, Monica Barbovschi, Lelia Green, Sofie Vandoninck

Research outputs 2013

This report has been produced by drawing on examples of (self-assessed) innovative qualitative studies (or studies with a qualitative component) provided by researchers in the EU Kids Online network (see Annex 3). Its purpose is to offer an approach to qualitative research that balances methodological innovation with responsible, ethically sensitive attitudes towards research with and about children, and their online experiences. The anticipated audience of this report is an academic one, with at least some experience in qualitative social research. The report is intended to be useful to researchers with an inclination towards qualitative methodologies, to experienced qualitative researchers new …

Artificial Intelligence And Data Mining: Algorithms And Applications, Jianhong Xia, Fuding Xie, Yong Zhang, Craig Caulfield

Research outputs 2013

Artificial intelligence and data mining techniques have been used in many domains to solve classification, segmentation, association, diagnosis, and prediction problems. The overall aim of this special issue is to open a discussion among researchers actively working on algorithms and applications. The issue covers a wide variety of problems for computational intelligence, machine learning, time series analysis, remote sensing image mining, and pattern recognition. After a rigorous peer review process, 20 papers have been selected from 38 submissions. The accepted papers in this issue addressed the following topics: (i) advanced artificial intelligence and data mining techniques; (ii) computational intelligence in …

"The Worst Female Character": Criminal Underclass Women In Perth And Fremantle, 1900-1939, Leigh S. Straw

Research outputs 2013

Women charged with offences against good order in Perth and Fremantle from 1900 to 1939 faced institutionalised sexism through the courts, police, and legislation. While men were also criminalised for good order offences, women suffered a double punishment. Charged with drunkenness, being idle and disorderly, and vagrancy, female offenders were further outcast by a public discourse stereotyping them as "bad" women. The extent to which they were able to negotiate and contest this stereotyping was limited, but a subtle negotiation of female identities was possible. This article suggests that female criminal lives offer alternative ways in which to understand women …

Improving Urban Run-Off Quality Using Iron Oxide Nanoparticles With Magnetic Field, Mehdi Khiadani, Mohammad Mehdi Foroughi, Mohammad Mehdi Amin

Research outputs 2013

Run-off from road surfaces is a major source of pollution in the environment. The aim of this study was to investigate the efficiency of nano iron oxide under a magnetic field to improve urban run-off quality. Experiments were conducted in a 50mm diameter column made of Plexiglass in which 20 cm deep stainless steel wool was used as the medium bed. A pair of magnets, each with 0.7 T magnetic charge density, was installed around the column. The particle size of the iron oxide was determined by X-ray diffraction (XRD) analysis. Atomic absorption spectroscopy, spectrophotometer, turbidimeter, and pH meter were …

Computer-Based Oral Exams In Italian Language Studies, Christopher P. Newhouse, Martin G. Cooper

Research outputs 2013

In this paper we report on one component of a three-year study into the use of digital technologies for summative performance assessment in senior secondary courses in Western Australia. One of the courses was Italian Studies, which had an oral communication outcome externally assessed with an oral performance for which students travelled to a central location and undertook an interview with two assessors. Apart from the logistical difficulties for both students and the organising body, this method did not leave an enduring record of the process, and raised questions about the reliability of the assessment. Over the three years of …

Removal Of Turbidity From Water By Dissolved Air Flotation And Conventional Sedimentation Systems Using Poly Aluminum Chloride As Coagulant, Mehdi Khiadani, Reza Kolivand, Matin Ahooghalandari, Maral Mohajer

Research outputs 2013

Flotation is a method in which particles in liquid phase are transported to the surface by air bubbles. In this experimental study, a comparison has been made between conventional sedimentation and dissolved air flotation (DAF) systems to remove turbidity from water. Initially, optimal operational conditions for each system utilized using water artificially turbid with Kaolin. For each system, samples were taken at 20-min interval after the system reached its optimal operational conditions. Parameters, such as turbidity, alkalinity, temperature, pH, and total suspended solids, were measured. For 20, 30–50 and 90–110 NTU, turbidity average removal efficiencies in DAF system were 14.7, …

Using Digital Technologies To Improve The Authenticity Of Performance Assessment For High-Stakes Purposes, Christopher P. Newhouse

Research outputs 2013

This paper reports on the outcomes of a three-year study investigating the use of digital technologies to increase the authenticity of high-stakes summative assessment in four Western Australian senior secondary courses. The study involved 82 teachers and 1015 students and a range of digital forms of assessment using computer-based exams, digital portfolios and audiovisual recordings. The results were analysed using a feasibility framework concerning manageability, technical facility, functional operation and pedagogic alignment. By the end of the study, each form of assessment that was implemented was found to be feasible once some obstacles were overcome. Two methods of marking were …

Tests Examining Skill Outcomes In Sport: A Systematic Review Of Measurement Properties And Feasibility, Sam Robertsson, Angus F. Burnett, Jodie Wilkie

Research outputs 2013

Background: A high level of participant skill is influential in determining the outcome of many sports. Thus, tests assessing skill outcomes in sport are commonly used by coaches and researchers to estimate an athlete’s ability level, to evaluate the effectiveness of interventions or for the purpose of talent identification.

Objective: The objective of this systematic review was to examine the methodological quality, measurement properties and feasibility characteristics of sporting skill outcome tests reported in the peer-reviewed literature.

Data Sources: A search of both SPORTDiscus and MEDLINE databases was undertaken.

Study Selection: Studies that examined tests of sporting skill outcomes were …

Release Of Dissolved Organic Carbon From Seagrass Wrack And Its Implications For Trophic Connectivity, Paul S. Lavery, Kathryn M. Mcmahon, Julia Weyers, Mary C. Boyce, Carolyn Elizabeth Oldham

Research outputs 2013

The export of old leaves and stems (wrack) from seagrass meadows provides a mechanism for trophic connectivity among coastal ecosystems. As little of this wrack is consumed by mesograzers, leached dissolved organic carbon (DOC) may determine the importance of wrack as a trophic subsidy. However, few studies have examined the effect of seagrass type or age on the release of DOC or its bioavailability. We examined the amount and composition of DOC released from different wrack: Posidonia sinuosa, Amphibolis antarctica and the alga Laurencia sp. We then examined the effect of age on DOC leaching from P. sinuosa wrack. The …