Digital Commons Network^™

Employability Skill Development In Work-Integrated Learning: Barriers And Best Practice, Denise Jackson

Research outputs 2013

Work-integrated learning (WIL) is widely considered instrumental in equipping new graduates with the required employability skills to function effectively in the work environment. Evaluation of WIL programs in enhancing skill development remains predominantly outcomes-focused with little attention to the process of what, how and from whom students acquire essential skills during work placement. This paper investigates best practice in the classroom and placement activities which develop employability skills and identifies factors impeding skill performance during WIL, based on survey data from 131 undergraduates across different disciplines in an Australian university. What students actually experienced during placement, or what they felt …

Activity Profiles And Demands Of Seasonal And Tournament Basketball Competition, Markus J. Klusemann, David B. Pyne, Will G. Hopkins, Eric J. Drinkwater

Research outputs 2013

Competition-specific conditioning for tournament basketball games is challenging, as the demands of tournament formats are not well characterized.

Purpose: To compare the physical, physiological, and tactical demands of seasonal and tournament basketball competition and determine the pattern of changes within an international tournament.

Methods: Eight elite junior male basketball players (age 17.8 ± 0.2 y, height 1.93 ± 0.07 m, mass 85 ± 3 kg; mean ± SD) were monitored in 6 seasonal games played over 4 mo in an Australian second-division national league and in 7 games of an international under-18 tournament played over 8 days. Movement patterns and …

Service Design 101: The Joy And Challenge Of Introducing Service Design Into An Undergraduate Design Curriculum, Christopher Kueh, Stuart Medley, Alun Price

Research outputs 2013

This paper describes the introduction of service design into a university design course that previously promoted itself as industry-based and practice-driven—but which had not necessarily kept pace with the contemporary meanings of these terms. The followings discuss the need to teach service design in Western Australia. These are being highlighted through the latest development in business community, government and NGOs that seek innovation and sustainability. Edith Cowan University Design Department therefore is committed to teach socially-focused projects (such as wayfinding; civic identity; designing out crime) connect students with the public and real clients through collaborative practice and social design workshops. …

Protected Species: Perspectives On Organisational Life, Maryam Omari, Megan Paull, Julie A. Crews

Research outputs 2013

Analogies can be drawn between a modern organisation and a complex ecosystem. In both, the players compete for scarce resources; survival often depends on how effectively an individual, organism or group capitalises on what is available to them. In natural settings, the laws of nature provide a backdrop to relationships, including where each individual or group is positioned in the hierarchy. In such settings, unusual and complex interrelationships can be formed where groups either assist or manipulate each other to survive. In organisational settings, the laws and boundaries are less clear, context specific and subject to organisational cultures and norms, …

Recent Developments In Magneto-Optic Garnet-Type Thin-Film Materials Synthesis, Mohammad Nur E Alam, Mikhail Vasiliev, Viacheslav Kotov, Kamal Alameh

Research outputs 2013

Magneto-optic (MO) garnets are used in a range of applications in nanophotonics, integrated optics, communications and imaging. Bi-substituted iron garnets of different compositions are the most useful class of materials in applied magneto- optics due to their excellent MO properties (large Faraday effect) and record-high MO figure of merit among all semi- transparent dielectrics. It is highly desirable to synthesise garnets which possess simultaneously a high MO figure of merit and large uniaxial magnetic anisotropy. However, the simultaneous optimization of several material properties and parameters can be difficult in single-layer garnet thin films, and it is also challenging to prepare …

Testing A Distributed Denial Of Service Defence Mechanism Using Red Teaming, Samaneh Rastegari, Philip Hingston, Chiou-Peng Lam, Murray Brand

Research outputs 2013

The increased number of security threats against the Internet has made communications more vulnerable to attacks. Despite much research and improvement in network security, the number of denial of service (DoS) attacks has rapidly grown in frequency, severity, and sophistication in recent years. Thus, serious attention needs to be paid to network security. However, to create a secure network that can stay ahead of all threats, detection and response features are real challenges. In this paper, we look at the the interaction between the attacker and the defender in a Red Team/Blue Team exercise. We also propose a quantitative decision …

Usefulness Of Infeasible Solutions In Evolutionary Search: An Empirical And Mathematical Study, Lyndon While, Philip Hingston

Research outputs 2013

When evolutionary algorithms are used to solve constrained optimization problems, the question arises how best to deal with infeasible solutions in the search space. A recent theoretical analysis of two simple test problems argued that allowing infeasible solutions to persist in the population can either help or hinder the search process, depending on the structure of the fitness landscape. We report new empirical and mathematical analyses that provide a different interpretation of the previous theoretical predictions: that the important effect is on the probability of finding the global optimum, rather than on the time complexity of the algorithm. We also …

Mobile Games With Intelligence: A Killer Application?, Philip Hingston, Clare Bates Congdon, Graham Kendall

Research outputs 2013

Mobile gaming is an arena full of innovation, with developers exploring new kinds of games, with new kinds of interaction between the mobile device, players, and the connected world that they live in and move through. The mobile gaming world is a perfect playground for AI and CI, generating a maelstrom of data for games that use adaptation, learning and smart content creation. In this paper, we explore this potential killer application for mobile intelligence. We propose combining small, light-weight AI/CI libraries with AI/CI services in the cloud for the heavy lifting. To make our ideas more concrete, we describe …

Optical Fiber Bragg Grating Based Intrusion Detection Systems For Homeland Security, Gary Allwood, Steven Hinckley, Graham Wild

Research outputs 2013

This paper describes the use of optical Fiber Bragg grating (FBG) sensors for use in various intrusion detection systems for homeland security. We show that a FBG sensor can be used effectively as an embedded in-ground acoustic sensor, sensitive enough to detect the acoustic emissions associated with walking on a concrete surface. Also, the FBG can be used as an in-ground pressure switch for intrusion detection through temporary flooring materials, such as tiles and wooden laminate. In addition, we verify the use of FBGs as in-fence perimeter breach detectors. Finally, we show how an FBG can be used as a …

E-Invigilator: A Biometric-Based Supervision System For E-Assessments, Nathan L. Clarke, P Dowland, Steven M. Furnell

Research outputs 2013

The creation of Virtual Learning Environments (VLEs) have revolutionized the online delivery of learning materials, from traditional lectures slides through to podcasts, blogs and wikis. However, such advances in how we assess such learning have not evolved - with physical attendance at proctored exams still a necessity for formal assessments. This paper presents a novel model to enable remote and electronic invigilation of students during formal assessment. The approach utilizes transparent authentication to provide for a non-intrusive and continuous verification of the candidates identity throughout the examination timeframe. A prototype is developed and a technology evaluation of the platform demonstrates …

Modelling Of Polyaniline For Wi-Fi Electromagnetic Interference Shielding, Whamid Al-Shabib, Stefan W. Lachowicz

Research outputs 2013

In this paper COMSOL model is used to model the s-parameters of the electromagnetic shielding of layer/layers of Polyaniline (PAni) for Wi-Fi Electromagnetic Interference (EMI) shielding. PAni has a good future for minimizing the problems with Electromagnetic Shielding (EMS), and will be increasingly be used to provide protection from Electromagnetic Radiation (EMR) and Electromagnetic Interference (EMI). With the increased development in Wi-Fi and telecommunications equipment, a simple model is required to test for transmission losses. In this paper the electromagnetic radiation from antenna, positioned 30cm from PAni shielding device is modelled using COMSOL 4.2. The paper predicts the radiation reduction …

Oscillation Built-In-Self-Test For Adc Linearity Testing In Deep Submicron Cmos Technology, Koay Soon Chan, Nuzrul Fahmi Nordin, Kim Chon Chan, Terk Zyou Lok, Chee Wai Yong, Adam Osseiran

Research outputs 2013

This paper proposes an Oscillation BIST (OBIST) that is meant to test ADCs fabricated in sub 100nm processes. The design is intended to be capable of testing a 10-bit ADC that was designed in 40nm CMOS. The design scheme presents a simple analog stimulus generator that was designed in 40nm CMOS together with schematic based simulation results. There is also a description of a calibration circuit and a highlevel implementation of a BIST control system to run the BIST and to calculate static parameters such as Differential Non-linearity (DNL) and Integral Non-linearity (INL). Simulation results for the analog stimulus generator …

Contextual Support For Innovation In An Australian Financial Services Firm, Agung N. Fahrudi, Denise E. Gengatharen, Yuliani Suseno, Craig Standing

Research outputs 2013

Organizational learning can facilitate innovation and it is affected by internal and external contexts. Leaders can provide internal contextual support for learning to occur in the organization in order to respond to changes in external contexts. However, there are limited studies about how leaders affect innovation in financial services firms. This paper applies Crossan et al.’s (1999) 4I framework to examine the impact of internal and external factors on an organization’s learning process and the extent of its innovation. An on-going case study of a large Australian financial services firm is used to gain insights about contextual support for innovation. …

Using Semiotic Resources When Building Images Of The Part-Whole Model Of Fractions, Paula M. Mildenhall

Research outputs 2013

This paper reports an exploration in to the use of a combination of semiotic resources when teaching the part- whole model of fractions. The study involved a single case study of one class teacher and six students in an Australian primary classroom. Using video as the predominate research tool it was possible to describe how gesture and language were combined with two and three dimensional representations of folding paper, fraction walls and number lines to build images that appeared to enhance student understanding of the part- whole of fractions. I conjecture that the variety semiotic resources including gesture should have …

Modelling The Volatility-Timing Of Funds Under Cpf Investment Theme, X Shen, Albert K. Tsui, Zhaoyong Zhang

Research outputs 2013

The performance measure of funds has been an important topic in the past few decades. In recent years the conditional models on return and volatility have become popular in studying the funds’ performance measure, but most of these studies focus on the US funds and a few on the Asian-based funds. The purpose of this study is to examine the volatility-timing performance of Singapore-based funds under the CPF (Central Provident Fund) Investment Scheme and non-CPF linked funds by taking into account of the currency risk effect on internationally managed funds. The CPF investment scheme was introduced in 1986 by the …

Forecasting Singapore Economic Growth With Mixed-Frequency Data, A. Tsui, C.Y. Xu, Zhaoyong Zhang

Research outputs 2013

In this paper we intend to forecast the economic growth of Singapore by employing mixed frequency data. This study is motivated by the following observations: macroeconomic variables are the important indicators of the economic performance, but they are normally available at low frequencies, e.g. quarterly for GDP and monthly for inflation. In contrast, the financial variables such as stock returns are available at high frequency, and often the asset prices are forward-looking and believed to contain useful information about future economic developments (Stock and Watson 2003). It is therefore an interesting question to raise whether or not one can use …

Modelling The Term Structure Of Japanese Bond Yields With The Nelson-Siegel Model, A. Tsui, J.X. Wu, Zhaoyong Zhang

Research outputs 2013

The Nelson-Siegel (1987) (NS) model has been credited for its high efficacy in the in-sample fitting and out-of-sample forecasting of the term structures of interest rates. The term structure of interest rates, popularly known as the yield curve, is a static function that relates the time-to-maturity to the yield-to maturity for a sample of bonds at a given point in time. The conventional way of measuring the term structure is by means of the spot rate curve, or yield curve, on zero-coupon bonds. Yet in reality, the entire term structure is not directly observable, which gives rise to the need …

Firewatch: Community Engagement And The Communication Of Bushfire Information, Donell J. Holloway, Lelia R. Green

Research outputs 2013

Successive bushfire inquiries in Australia have called for authorities to more effectively harness and disseminate bushfire information. Recommendations from these inquiries suggest a new approach to bushfires involving greater co-ordination, in which home dwellers, emergency fire services and government work more closely together and acknowledge that education, safety, planning and emergency management can be effective responses to the threat of bushfire. Policymakers and community members are seeking to revise bushfire protocols and access new sources of authoritative information, which may help guide public responses. Nonetheless, the effective communication of information regarding bushfires still seems to be problematic (Department of Justice, …

Tessitura Changes In Music Theatre Repertoire For The Soprano Voice, Linda J. Barcan

Research outputs 2013

While the term tessitura is often poorly defined and loosely applied, certain statements about its application to singers and their repertoire may be made. For vocal repertoire, tessitura refers to the prevailing note or range of notes in a vocal line. For singers, it refers to the area in which the voice is most comfortably resonant. The definition most frequently used to capture the concept in relation to both singer and repertoire is the range of pitches where a voice or song “sits”. While attempts have been made to quantify tessitura, most references to this term remain largely subjective. This …

Keys From The Past: Unlocking The Power Of Eighteenth-Century Contrapuntal Pedagogies, Jonathan R. Paget, Stewart J. Smith

Research outputs 2013

How did eighteenth-century musicians learn to compose, and how were they able to produce musical works with such comparative ease and fluency? What were the strategies at play that enabled even the most workman-like of composers to produce vast amounts of competent music, and how was it possible for almost any professional keyboard player to improvise a passable fugue? It is only recently that scholars have sought the answers to such questions. Groundbreaking work by Gjerdigen (1988; 2007a), Porter (2000; 2002), Renwick (1995), and others, provides a fascinating glimpse of the working methods of eighteenth-century musicians, and also offers implications …

Free-Space Optics For High Speed Reconfigurable Card-To-Card Optical Interconnects, Ke Wang, Ampalavanpillai Nirmalathas, Christina Lim, Efstratios Skafidas, Kamal Alameh

Research outputs 2013

High-speed card-to-card optical interconnects are highly demanded in high-performance computing and data centers. Compared with other solutions, free-space optical interconnects have the capability of providing both reconfigurability and flexibility. In this paper we propose and experimentally demonstrate a free-space based reconfigurable optical interconnect architecture and it is capable of connecting cards located both inside the same rack as well as in different racks. Results show that 3xiO Gb/s data transmission is achieved with a worst-case receiver sensitivity better than -9.38 dBm.

Interest Rate Sensitivities Of Externally And Internally Managed Australian Reits, Jaime L. Yong, Abhay Singh

Research outputs 2013

Real Estate Investment Trusts (REITs) in Australia experienced tremendous growth and investor interest following the crash of unlisted property funds in the 1990s. Since 2001, management structures have shifted from external property management to an internally advised model. The sector’s returns had been notably rewarding up till the Global Financial Crisis but rising costs of debt and years of aggressive borrowing to fund expansions have eroded the values of REITs. Externally managed trusts had relatively higher levels of debt than their internally managed counterparts thus increasing the sensitivities to interest rate risks. Yet internally managed REITs engage in a wider …

Dependence Estimation And Controlled Cvar Portfolio Optimization Of A Highly Kurtotic Australian Mining Sample Of Stocks, Jose Arreola Hernandez, David E. Allen, Robert Powell

Research outputs 2013

The drivers of mining stock prices are known to be several. Sharp spikes on the stocks return distribution have been linked to the presence of unusually high volatility signifying the presence of high levels of kurtosis. The accurate measurement of the stocks’ underlying co-movements for more accurate CVaR portfolio optimization requires, therefore, the utilization of sophisticated and specific-specialized techniques which could adequately capture and model these characteristics. Here this issue is addressed by applying statistical-graphical models for dependence estimation. Twenty mining stocks, out of the 801 listed in the ASX as of December 2012, have been selected for the analysis …

Primary Sector Volatility And Default Risk In Indonesia, David E. Allen, Ray R. Boffey, Akhmad R. Kramadibrata, Robert Powell, Abhay Singh

Research outputs 2013

The Indonesian market is a critical market to the South East Asian region, being that region’s largest economy. The primary sectors of the Indonesian economy, incorporating Agriculture and Mining, are of critical importance to the country, representing approximately one quarter of GDP and providing nearly 40% of the nation’s employment. Mining and Agriculture stock returns significantly outperformed the Indonesian Stock Exchange (IDX) composite index in the five years leading up to Global Financial Crisis (GFC), and experienced savage falls during the GFC. Against this background, we examine the market and credit risk of these sectors during the pre-GFC, GFC and …

Intraday Volatility Forecast In Australian Equity Market, Abhay Singh, David E. Allen, Robert Powell

Research outputs 2013

On the afternoon of May 6, 2010 Dow Jones Industrial Average (DJIA) plunged about 1000 points (about 9%) in a matter of minutes before rebounding almost as quickly. This was the biggest one day point decline on an intraday basis in the DJIA’s history. An almost similar dramatic change in intraday volatility was observed on April 4, 2000 when DJIA dropped by 4.8%. These historical events present very compelling argument for the need of robust econometrics models which can forecast intraday asset volatility. There are numerous models available in the finance literature to model financial asset volatility. Various Autoregressive Conditional …

The Ethical Dilemmas Of Local Government Planners In Western Australia, Timothy J. Perkins, Julie A. Crews

Research outputs 2013

This paper presents a study of ethical dilemmas faced by planners in local government in the Perth Metropolitan Region (PMR), Western Australia. A qualitative methodology has been adopted to identify planners’ personal and organisational values and the ethical dilemmas they face in their role. Local government planning officers operate in a complex political environment in which their decisions include various stakeholder interests such as private developers, local businesses, environmentalists and government authorities. As such, planners face potential competing interests which challenge their own values and compete with their professional obligations relating to planning practice and governance. Planners from urban-fringe, inner-city …

A Dynamic Credit Ratings Model, David E. Allen, Robert Powell, Abhay Singh

Research outputs 2013

The Global Financial Crisis (GFC) provided overwhelming evidence of the problems caused by inadequate credit ratings. Losses and problem loans experienced by banks over this period were staggering. Yet many of the securitized sub-prime parcels which were widely seen as an underlying cause of the GFC, as well as corporate obligors who experienced severe difficulties during the GFC, retained extremely strong external credit ratings. They may have had low perceived risk at the time of rating, but as circumstances changed, the ratings stayed static and became far removed from the underlying risk. A key problem is that the external credit …

Digital Representation Of Visual Artworks For High-Stakes Assessment, Christopher P. Newhouse

Research outputs 2013

The collection and marking of student artwork across a large jurisdiction such as Western Australia is challenging where the work is submitted to a central location to be marked by experts and returned to students. An alternative approach would be to submit digital representations of the artworks online for marking. However, to give a valid and reliable measure the representations would need to be of adequate quality. Further, judgements of artworks are necessarily subjective giving concern about the reliability of marking for high-stakes assessment. The comparative pairs method of marking lends itself to addressing this problem and is feasible where …

Ict In The Australian Curriculum, Christopher P. Newhouse

Research outputs 2013

The new Australian Curriculum aims to be suitable for the needs of 21st Century society and as such has explicitly defined a number of key roles to digital technologies. This should provide opportunities for schools and teachers to build on past reforms and prepare for the future. Over the past few years I have had various roles contributing to the development of sections of the Australian Curriculum, specifically the Technologies curriculum area, the Information and Communications Technology (ICT) general capability, and the embedding of ICT use across some of the curriculum areas. In this paper I explain my personal understanding …

Security, Control And Deviance: Mapping The Security Domain And Why It Matters, Jeffrey D. Corkill, Michael P. Coole

Research outputs 2013

Security is one of the foundations on which a stable and cohesive society is built. It is this security that allows citizens to go about their daily lives with freedom and certainty,affording them the ability to make their own choices as to what they do. Yet it may be argued that security is a concept that is misunderstood and perceived in a myriad of ways by the various stratum of society. Since the tragic events of 9 September 2001, security has become a much used and abused term. Law and legislation have been changed and enacted to protectand control the …