Digital Commons Network^™

Effect Of Grain Size On The Hydrogen Diffusion Process In Steel Using Cellular Automaton Approach, Druce P. Dunne, E V. Pereloma, Nima Yazdipour

Faculty of Engineering - Papers (Archive)

The role of microstructure in susceptibility to hydrogen uptake and property degradation is being evaluated using a number of high strength pipeline steels. To do so, a cellular automaton (CA) model has been used to examine the effect of grain size, as a first step in assessing the influence of microstructure. The simulation results of hydrogen diffusion into microstructures with different grain sizes are presented.

Using Slowmation For Animated Storytelling To Represent Non-Aboriginal Preservice Teachers' Awareness Of "Relatedness To Country", Anthony D. Mcknight, Garry Hoban, Wendy Nielsen

Faculty of Education - Papers (Archive)

In this study, a group (N=15) of final year non-Aboriginal pre ervice teachers participated in an elective subject that aimed to raise their awarene s ab ut Aboriginal ways of knowing. A vital aspect of the course was developing the preservice teachers' awareness of "relatedness to country" which is a key belief for Aboriginal people. The non-Aboriginal pre service teachers s lected their own special place and then experienced Aboriginal ways of knowing throughout the course and vi ited local Aboriginal sites to hear and listen to stories shared by an Aboriginal Elder. At the end of the subject, the …

Using A Multi-Experimental Approach To Assess The Fate Of Angled-And-Released Yellowtail Kingfish (Seriola Lalandi), Lachlan W. Roberts, Paul A. Butcher, Matt K. Broadhurst, Brian R. Cullis

Faculty of Informatics - Papers (Archive)

Yellowtail kingfish (Seriola lalandi) are angled throughout their global distribution and released in large numbers under the unsubstantiatedassumption of few impacts. The validity of this supposition was tested for southeastern Australian stocks. In all, 54 fishwere angled and released into cages with 36 controls and monitored for 5 d. Of the angled fish, 15% died, mostly as a consequenceof gill-hooking and the associated physiological and mechanical damage. A biotelemetry experiment was then performed to determineif cutting the line on gill-hooked fish could improve their post-release fate. The attachment of transmitters was validated in anaquarium experiment before 12 jaw- and 10 …

Using Decision Tree In Business Collaborator, Chao Sun, Yu Zhang

Faculty of Commerce - Papers (Archive)

Purpose - Business collaboration is important for small and medium sized enterprises. The traditional method of choosing business collaborator is largely based on individual's experience and subjective criteria. However, the failure rate of business collaboration is still high for less experienced small firms. The purpose of this research is to find a different solution for managers in choosing business collaborators.

Methodology - Decision Tree is an advanced technology, which is used in different business and industry areas. It is adopted in this study to help the managers choosing business partners. This study using the data collected from 339 firms in …

Stereoselective Synthesis Of Two New Trihydroxylated Pyrrolidines Using A Meyer-Schuster Rearrangement, Nalivela K. Swamy, Stephen G. Pyne

Faculty of Science - Papers (Archive)

The synthesis of two new trihydroxylated pyrrolidines, in a highly diastereoselective manner, has been developed using the Meyer-Schuster rearrangement as a key step. C 2011 Taylor & Francis Group, LLC.

Coaching With Self-Determination Theory In Mind: Using Theory To Advance Evidence-Based Coaching Practice, Gordon B. Spence, Lindsay G. Oades

Sydney Business School - Papers

The scholarly coaching literature has advanced considerably in the past decade. However, a review of the existing knowledge base suggests that coaching practice and research remains relatively uninformed by relevant psychological theory. In this paper it will be argued that Self-Determination Theory (SDT; Deci & Ryan, 1985) presents as a useful theoretical framework for coaching as it can help understand coaching practice at both macro and micro levels. The utility of SDT as a theoretical framework for coaching is explored, with particular attention given to the role that coaching would appear to play in the satisfaction of three basic psychological …

Improvement Of Rock Bolt Profiles Using Analytical And Numerical Methods, Chen Cao, Jan Anton Nemcik, Najdat I. Aziz

Faculty of Engineering - Papers (Archive)

The anchorage capacity of fully grouted bolts has been studied for many years, however the bolt rib profile and its effect on bolt shear resistance is poorly understood. A new development in calculating load transfer capacity between two rib profiles of varying geometries is discussed. The derived mathematical equations presented calculate the stress distribution adjacent to the fully grouted bolt and bolt pull out force needed to fail the resin. The Fast Lagrangian Analysis Continua (FLAC) program was used to verify the calculations of stress within the resin. The novel idea of coupling the bolt geometry with the calculated stress …

Dosimetry Verification In Eye Brachytherapy Using Silicon Pixelated Detectors, Michael Weaver, Marco Petasecca, Michael L. Lerch, Dean L. Cutajar, J Jakubek, S Pospsil, Anatoly B. Rosenfeld

Faculty of Engineering - Papers (Archive)

This study presents a high spatial resolution dosimetry system for quality assurance of I-125 eye plaques. The system is based on a silicon pixelated detector and is capable of deriving 3D dose distributions. A simple design was implemented, incorporating a movable eye plaque in a small water phantom above the silicon Medipix2 detector. It is designed for obtaining 2D dose distributions at different depths in water, for subsequent 3D dose mapping. The effect of backscattering in a medium placed behind the Medipix2 to simulate surrounding tissue has been studied in terms of dose distribution. Additionally, two modes of acquisition, event …

The Australian Methane Budget: Interpreting Surface And Train-Borne Measurements Using A Chemistry Transport Model, A Fraser, C C. Miller, Paul Palmer, Nicholas M. Deutscher, Nicholas B. Jones, David W. Griffith

Faculty of Science - Papers (Archive)

We investigate the Australian methane budget from 2005-2008 using the GEOS-Chem 3D chemistry transport model, focusing on the relative contribution of emissions from different sectors and the influence of long-range transport. To evaluate the model, we use in situ surface measurements of methane, methane dry air column average (XCH 4) from ground-based Fourier transform spectrometers (FTSs), and train-borne surface concentration measurements from an in situ FTS along the north-south continental transect. We use gravity anomaly data from Gravity Recovery and Climate Experiment to describe the spatial and temporal distribution of wetland emissions and scale it to a prior emission estimate, …

Treatment Of Saline Aqueous Solutions Using Direct Contact Membrane Distillation, Long Nghiem, Florian Hildinger, Faisal I. Hai, Tzahi Cath

Faculty of Engineering - Papers (Archive)

The treatment of highly saline aqueous solutions using direct contact membrane distillation (DCMD) was evaluated in this study. Experiments were conducted using a flat sheet polytetrafluoroethylene membrane with nominal pore size of 0.22 µm. Seawater, reverse osmosis (RO) concentrate collected from a wastewater reclamation plant, and a synthetic solution containing 2,000 mg/L of CaSO₄ were selected as the representative saline solutions. A gradual decline in permeate flux was observed at the beginning of the experiments when the seawater and RO concentrate solutions were treated using the DCMD process, most likely due to initial organic fouling and scaling. In contrast, …

Building A System For Managing Clinical Pathways Using Digital Pens, Linda L. Dawson, Virginia Plummer, Stephen Weeding, Terri Harlem, Bob Ribbons, David Waterhouse

Faculty of Informatics - Papers (Archive)

Background: A research team from Monash University and Peninsula Health, Victoria is undertaking a trial of digital pen and paper technology for clinical pathway management. Digital pen and paper allows for the capture of images of handwritten documents using an embedded camera in the pen which is matched with special patterns of dots on the paper. These digitised images can be uploaded to a database for analysis. Objectives: Clinical pathways have been adopted in most Australian hospitals to document and manage multidisciplinary care across a variety of acute care environments. Analysis of the information collected in paper-based clinical pathway documents …

Information Retrieval And Social Tagging For Digital Libraries Using Formal Concept Analysis, Peter W. Eklund, Peter Goodall, Timothy Wray

Faculty of Informatics - Papers (Archive)

This paper reports a novel semantic web application developed to deliver a collaborative tagging system for a digital on-line museum. The key features of our application – called the Virtual Museum of the Pacific – concern the browsing and retrieval interface based on Formal Concept Analysis, the extensible distributed data model to support collaborative tagging and its web services implementation.

Automating Dimensional Tolerancing Using Ripple Down Rules (Rdr), Ghassan Beydoun, Achim Hoffmann, Ramsey Hamade

Faculty of Informatics - Papers (Archive)

We propose to use a knowledge based approach to assist in mechanical design focusing on dimensional tolerancing. To illustrate our approach, we capture the knowledge which human designers utilize in order to specify dimensional tolerances on shafts and mating holes in order to meet desired classes of fit as set by relevant engineering standards. The software system we developed would help mechanical designers become more effective in the time-consuming dimensioning and tolerancing process of their designs in the future. In doing this, the paper makes a twofold contribution to the field of knowledge acquisition: firstly, interface was adjusted to receive …

Network Reconfiguration Using Psat For Loss, Essa-J-Abdul Zehra, Mahmoud Moghavvemi, Maher M.I. Hasim, Kashem Muttaqi

Faculty of Informatics - Papers (Archive)

Network reconfiguration in distribution system is realized by changing the status of sectionalizing switches, and is usually done for the purpose of loss reduction. Loss reduction can result in substantial benefits for a utility. Other benefits from loss reduction include increased system capacity, and possible deferment or elimination of capital expenditures for system improvements and expansion. There is also improved voltage regulation as a result of reducing feeder voltage drop. Research work included by this paper focuses on using branch exchange method to minimize losses and solve the problems over different radial configuration. Solution’s algorithm for loss minimization has been …

Transforming The Relationship Between Citizens And Local Councils Using Web 2.0 Technologies, Rodney J. Clarke, John James

Faculty of Health and Behavioural Sciences - Papers (Archive)

Australian local government organisations (LGOs) are unique in terms of the variety anddiversity of services that they provide to their communities. These include traditionalfunctions like maintaining local roads, managing property information, regulating real estatedevelopment, and collecting and disposing of waste. LGO service portfolios have expandedas a result of federal and state governments devolving their traditional responsibilities to localgovernments. LGOs have also raised community expectations by delivering a vast array ofcommunity and commercial services in addition to their traditional services. For example, thecommercial services operated by Wollongong City Council (2002) include facilities such astourist parks, leisure facilities, tourist information centres, and …

Assessing The Vulnerability Of Asian Megadeltas To Climate Change Using Gis, Colin D. Woodroffe

Faculty of Science - Papers (Archive)

Susceptibility of Asian megadeltas to climate change, including sea-level rise, is investigated using GIS. The Indus, Ganges-Brahmaputra-Meghna, Irrawaddy, Chao Phraya, Mekong, Red, Pearl, Changjiang, and Huanghe deltas began to form around 6000 years ago and have prograded since. The surface topography of active and abandoned delta plains is examined using digital terrain models derived from Shuttle Radar Topography Mission data and channel morphology is investigated using radar imagery. After delta plains are abandoned they become increasingly dominated by tidal processes. Population density is estimated using gridded world population data but highly variable local microtopography and uncertainty regarding future climate changes …

Characterization Of The Bake-Hardening Behavior Of Transformation Induced Plasticity And Dual-Phase Steels Using Advanced Analytical Techniques, Ilana Timokhina, E V. Pereloma, S P. Ringer, Rongkun Zheng, Peter D. Hodgson

Faculty of Engineering - Papers (Archive)

The bake-hardening (BH) behavior of TRansformation Induced Plasticity (TRIP) and Dual-Phase (DP) steels after intercritical annealing (IA) has been studied using transmission electron microscopy, X-ray diffraction and three dimensional atom probe tomography. It was found for the DP steel that carbon can segregate to dislocations in the ferrite plastic deformation zones where there is a high dislocation density around the “as-quenched” martensite. The carbon pinning of these dislocations, in turn, increases the yield strength after aging. It was shown that bake-hardening also leads to rearrangement of carbon in the martensite leading to the formation of rod-like low temperature carbides in …

Preparation Of Titanium Dioxide Nanoparticles From Electrocoagulated Sludge Using Sacrificial Titanium Electrodes, H K. Shon, S Phuntsho, S Vigneswaran, Jaya Kandasamy, Long Nghiem, G J. Kim, J B. Kim, Jin-Ho Kim

Faculty of Engineering - Papers (Archive)

A comprehensive investigation of electrocoagulation using sacrificial titanium (Ti) electrodes in wastewater was carried out. The effects of specific process variables, such as initial pH, mixing, current density, initial organic loading, and ionic/electrolyte strength were first optimized to produce recyclable Ti-based sludge. The sludge was incinerated at 600 °C to produce functional TiO₂ photocatalyst. X-ray diffraction analysis revealed that TiO₂ produced at optimum electrocoagulation conditions was mostly anatase structure. The specific surface area of the synthesized TiO₂ photocatalyst was higher than that of the commercially available and widely used Degussa P-25 TiO₂. Furthermore, energy dispersive …

Social Tagging For Digital Libraries Using Formal Concept Analysis, Timothy Wray, Peter W. Eklund

Faculty of Informatics - Papers (Archive)

This paper describes the Art Collection Ecosystem – an application that allows users to tag and serendipitously browse content using Formal Concept Analysis. Within this application, tags are derived from meta-data of artworks within an existing asset management system and are classified according to theories derived from social tagging behaviour.We present past and recent iterations of its design, where it is evaluated as a contextual comparison to a popular image tagging application, Flickr. Through the process of iterative design and user evaluation, we produce results are of interest to any applied research and development that involves the exploration of digital …

Travelling Partners: Using Literary Studies To Support Creative Writing About Real Spaces, Joshua M. Lobb

Faculty of Creative Arts - Papers (Archive)

This paper investigates the ways in which literary studies and critical theory can be used to provide writers with productive creative models for representing ‘real spaces’: that is, the incorporation of real locations within a creative work. Many new creative writing students begin with the premise ‘write what you know’, but often overlook the implications of including the names of real places in their work—whether it be Paris, Paddington Station or Prahran. The paper argues that the examination of existing creative work allows writers to understand the practical and the political ramifications of this activity. The paper will outline the …

Support Of Distribution System Using Distributed Wind And Pv Systems, Kai Zou, Ashish P. Agalgaonkar, Kashem Muttaqi, Sarath Perera, N Browne

Faculty of Informatics - Papers (Archive)

The application of renewable distributed generation (DG) could be considered as an alternative approach for distribution system expansion planning not only to reduce power loss and carbon emission, but also to improve system voltage profile. This paper investigates technical aspects relatedto voltage support and loss reduction in distribution systems with distributed wind and solar generation. The probabilistic wind, solar, and load models have been developed in order to address uncertain nature of wind speed, solar radiation, and load demand. Investigations have been carried out using Monte Carlo based probabilistic load flow analysis to estimate the probability distributions of system state …

Comparison Of Alamouti And Sts Implementations Using A Software Defined Radio Test Bed, Shinhan Wee, Montserrat B. Ros, Peter James Vial

Faculty of Informatics - Papers (Archive)

A Software Defined Radio test bed using the Gnu Radio project was installed on Unix computers and modified so that estimates of the channel state coefficients were taken for a Multiple Input Multiple output (MIMO) system to take advantage of space time transmission at a frequency of 2.4GHz. Two MIMO techniques were implemented, one based on Alamouti and the other on Space Time Spreading. The technique used to estimate channel coefficients is described. The Bit Error Rate performance was compared, when using Binary Phase Shift Keying, between the two systems and it was found that the STS system performed better …

Microwave Absorption Measurements Using Broad-Band Meanderline Approach, Ching-Ching Tsai, J Choi, Sunglae Cho, S J. Lee, Bimal K. Sarma, C Thompson, O Chernyashevskyy, Ivan Nevirkovets, J B. Ketterson

Australian Institute for Innovative Materials - Papers

We describe a technique that permits broad-band, field-dependent ferromagnetic and electron paramagnetic resonance absorption measurements that is applicable to thin films and patterned micro-/nanostructured arrays and is based on a wire-wound meanderline approach. Techniques to prepare meanderlines and perform microwave measurements are described along with some demonstrations involving an electron paramagnetic resonance calibration/test material, 2,2-diphenyl-1-picryl-hydrazyl, and a ferromagnetic cobalt thin film.

Site-Specific Covalent Attachment Of Dna To Proteins Using A Photoactivatable Tus-Ter Complex, Dahdah B. Dahdah, Isabelle Morin, Morgane Moreau, Nicholas E. Dixon, Patrick M. Schaeffer

Faculty of Science - Papers (Archive)

Investigations into the photocrosslinking kinetics of the protein Tus with various bromodeoxyuridine-substituted Ter DNA variants highlight the potential use of this complex as a photoactivatable connector between proteins of interest and specific DNA sequences.

Ybco Film With Sm Addition Using Low-Fluorine Tfa-Mod Approach, Dongqi Shi, Lin Wang, Jung Ho Kim, Xuebin Zhu, Min Liu, Qi Li, Rong Zeng, Jyhuan Ahn, S. X. Dou, J. Y. Yoo, Y. K. Kim, T. Yamashita, John Barry, Richard Taylor

Faculty of Engineering - Papers (Archive)

Yttrium barium copper oxide (YBCO) film was synthesized by a metal-organic deposition (MOD) process with fluorine-free Y and Cu precursor. The precursor solution with Sm addition enabled further improvement of the thickness and uniformity of precursor films. The calcination and firing processes were studied, and the precursor film was successfully converted to dense and uniform YBCO film on LaAlO₃ (LAO) substrate after annealing in a wet Ar and O₂ atmosphere. The measured critical current density (J _c) value was about 80 A/cm-w (2.66 MA/cm²). The trifluoroacetate (TFA) reduced MOD process has the advantage that …

Simulation Of Impulsive Loading On Column Using Inflatable Airbag Technique, Alexander Remennikov, J Y Richard Liew, Kong Sih Ying, K W. Kang

Faculty of Engineering - Papers (Archive)

The purpose of this study was to simulate impulsive loading on columns by an innovative lab-based experimental technique that utilises inflatable airbags. Mild and stainless steel hollow sectioin columns with effective lengths of 955mm and under simply supported condition were used in this study.

One Teacher's Response To Literacy Learning And Teaching Using Technology, Lisa K. Kervin, Pauline T. Jones

Faculty of Education - Papers (Archive)

The federal government’s pledge for increased access to computers for students has been held up as “groundbreaking reform” as “digital schools” become a reality for more students. However, access to technology remains uneven across schools, student competency levels differ and teacher expertise varies considerably. Incorporating new technologies such as laptops, wireless connectivity, smartboards and mobile communication devices into interactive practices frequently requires rethinking configurations of curriculum, bodies and space.

Teachers are experts in pedagogy, but not necessarily in technology. It is vital that teachers are acknowledged for the considerable knowledge they have about their profession – what constitutes ‘good’ pedagogy, …

Fabrication And Superconducting Properties Of Highly Dense Mgb2 Bulk Using A Two-Step Sintering Method, Minoru Maeda, Yue Zhao, Yoshifumi Watanabe, Hiroaki Matsuoka, Y Kubota

Australian Institute for Innovative Materials - Papers

We investigated on microstructure and superconducting properties of high-density MgB₂superconductors synthesized by a heat-treatment method combining a short period of sintering at 1100^°C with a following annealing at a low temperature. The two-step sintering method was found to achieve a coexistence of a high density and broadened XRD full width at half maximum (FWHM) of MgB₂ peak in the samples. The onset of diamagnetism at 5 T was approximately 2 K higher than those of the samples heat-treated by single-step sintering at high or low temperatures. Different second-step annealing temperatures were examined in this work. …

Using The Brand Molecule Concept To Guide The Management And Marketing Of A Professional Sports Team, Alan Pomering, Dirk Melton, Gregory Kerr

Faculty of Commerce - Papers (Archive)

The sports industry is an important one; it is estimated to be the 11th largest industry in the United States. Within this industry, individual sports, at both the amateur and professional levels, compete for talented players, supporters, government funding, and sponsorship dollars. It is therefore important for sports to manage their sports brands. We use Lederer and Hill’s (2001) brand molecule concept to explain the brand management implications for a professional, national sports team, the Bulldogs, a Sydney-based team in Australia’s National Rugby League competition. The brand molecule highlights for the brand manager the positive and negative atoms that comprise …

Barriers To Using Ict In Mathematics Teaching: Issues In Methodology, Rebecca Hudson, Anne L. Porter, Mark I. Nelson

Faculty of Informatics - Papers (Archive)

In this paper we examine the barriers to using ICT of secondary mathematics teachers in the classroom. The sample contained 114 mathematics teachers from public secondary schools in New South Wales (Australia). The instrument used in this study was a survey questionnaire mailed to secondary schools in the New South Wales Department of Education and Training. The questionnaire design is a closed-response with five open-ended questions. Results of the study showed that lack of access to computer labs is the number one barrier to using ICT in the classroom. But when a second analysis using a logistic regression analysis modeling …