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2009

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A Match-Based Approach To Optimize Conformance Test Sequence Generation Using Mp-Method, Jitian Xiao Jan 2009

A Match-Based Approach To Optimize Conformance Test Sequence Generation Using Mp-Method, Jitian Xiao

Research outputs pre 2011

An important issue in protocol conformance testing is how to generate test sequences in an efficient and effective way that achieves the required fault detection coverage. We proposed an approach for finding shorter test sequences for protocol conformance testing based on the Wp method in our previous work. While the method generated good quality test sequences, an extra leading sequence may have to be added if the final test sequence generated was not started from the same starting state of the given FSM. A new approach is proposed in this paper to overcome this problem thus to improve the quality …

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Perceptions And Pedagogy: Exploring The Beliefs And Practices Of An Effective Primary Science Teacher, Angela Fitzgerald, Vaille Dawson, Mark Hackling Jan 2009

Perceptions And Pedagogy: Exploring The Beliefs And Practices Of An Effective Primary Science Teacher, Angela Fitzgerald, Vaille Dawson, Mark Hackling

Research outputs pre 2011

Effective science teaching is vital for improved student learning outcomes in primary school science. Therefore, there is a need to tease out the components of effective science teaching to better understand what effective primary teachers do in their classrooms and why they do it. Four primary teachers, each nominated as effective science practitioners by a professional colleague, entered into this research study. This 'entry' phase involved gathering information from classroom observations and teacher interviews to provide background information about the beliefs and practices of these teachers. This paper reports on the findings drawn from one teacher - 'Deanne'.

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Laboratory Technicians In Australian Secondary Schools, Mark Hackling Jan 2009

Laboratory Technicians In Australian Secondary Schools, Mark Hackling

Research outputs pre 2011

A number of reports have argued that secondary science education needs to be more inquiry oriented and involve authentic and practical investigations to develop scientific literacy and better engage students in learning science. Inquiry-oriented approaches, such as those advocated in the new science national curriculum, require that teachers have access to good laboratory facilities and equipment and are supported by knowledgeable laboratory technicians. Without adequate and qualified technical support, the quality of the curriculum will be compromised. This paper reports on the status of laboratory technicians in Australian secondary schools and makes recommendations for improving the quality of training and …

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Investigating Other Leading Indicators Influencing Australian Domestic Tourism Demand, David Allen, Ghialy Choy Lee Yap Jan 2009

Investigating Other Leading Indicators Influencing Australian Domestic Tourism Demand, David Allen, Ghialy Choy Lee Yap

Research outputs pre 2011

In the tourism demand literature, much of the research focuses on income and price variables as demand determinants for travel. Nevertheless, the literature has neglected other possible indicators such as consumers’ perceptions of the future course of the economy, household debt and the number of hours worked in paid jobs. In fact, several studies found that these indicators could influence consumers in making decisions to travel. In this paper, we intend to examine whether there are other indicators that can influence future Australian domestic tourism demand. The research employs panel data with a total of 252 observations. For the dependent …

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Scada Security - Slowly Circling A Disaster Area, Craig Valli, Andrew Woodward Jan 2009

Scada Security - Slowly Circling A Disaster Area, Craig Valli, Andrew Woodward

Research outputs pre 2011

SCADA (Supervisory Control And Data Acquisition) networks control much of the industrialised nations production and supply complexes. Various government reports and investigations have highlighted the vulnerability of these systems. Many of these systems are on private networks which are increasingly being connected to systems that are accessible from other networks such as the Internet. SCADA systems have unique security and operational requirements. However, many of the most basic security measures are missing in these networks. This examines some of these issues and proposes some technologies that could help secure these networks from attack.

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Scada Forensics With Snort Ids, Craig Valli Jan 2009

Scada Forensics With Snort Ids, Craig Valli

Research outputs pre 2011

This paper is a research in progress paper outlining an approach using open source IDS (Snort) and honeypot (nepenthes, honeyd) technologies to create a resilient layered defensive approach for SCADA and control systems networks.

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Insecurity By Obscurity: A Review Of Soho Router Literature From A Network Security Perspective, Patryk Szewczyk, Craig Valli Jan 2009

Insecurity By Obscurity: A Review Of Soho Router Literature From A Network Security Perspective, Patryk Szewczyk, Craig Valli

Research outputs pre 2011

Because of prevalent threats to SoHo based ADSL Routers, many more devices are compromised. Whilst an end-user may be at fault for not applying the appropriate security mechanisms to counter these threats, vendors should equally share the blame. This paper reveals that the lack of security related content and poor overall design could impact on end-users’ interpretation and willingness to implement security controls on their ADSL router. It argues that whilst the number of threats circulating the Internet is increasing, vendors are not improving their product literature.

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Visualisation Of Honeypot Data Using Graphviz And Afterglow, Craig Valli Jan 2009

Visualisation Of Honeypot Data Using Graphviz And Afterglow, Craig Valli

Research outputs pre 2011

This research in progress paper explores the use of Graphviz and Afterglow for the analysis of data emanating from a honeypot system. Honeypot systems gather a wide range of data that is often difficult to readily search for patterns and trends using conventional log file analysis techniques. The data from the honeypots has been statically extracted and processed through Afterglow scripts to produce inputs suitable for use by the DOT graph based tools contained within Graphviz. This paper explores some of the benefits and drawbacks of currently using this type of approach.

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Evolving The Quality Of A Model-Based Test Suite, Usman Farooq, Chiou P. Lam Jan 2009

Evolving The Quality Of A Model-Based Test Suite, Usman Farooq, Chiou P. Lam

Research outputs pre 2011

Redundant test cases in newly generated test suites often remain undetected until execution and waste scarce project resources. In model-based testing, the testing process starts early on in the developmental phases and enables early fault detection. The redundancy in the test suites generated from models can be detected earlier as well and removed prior to its execution. The article presents a novel model-based test suite optimization technique involving UML activity diagrams by formulating the test suite optimization problem as an Equality Knapsack Problem. The aim here is the development of a test suite optimization framework that could optimize the model-based …

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A Max-Min Multiobjective Technique To Optimize Model Based Test Suite, Usman Farooq, Chiou P. Lam Jan 2009

A Max-Min Multiobjective Technique To Optimize Model Based Test Suite, Usman Farooq, Chiou P. Lam

Research outputs pre 2011

Generally, quality software production seeks timely delivery with higher productivity at lower cost. Redundancy in a test suite raises the execution cost and wastes scarce project resources. In model-based testing, the testing process starts with earlier software developmental phases and enables fault detection in earlier phases. The redundancy in the test suites generated from models can be detected earlier as well and removed prior to its execution. The paper presents a novel max-min multiobjective technique incorporated into a test suite optimization framework to find a better trade-off between the intrinsically conflicting goals. For illustration two objectives i.e. coverage and size …

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Stock Returns And Equity Premium Evidence Using Dividend Price Ratios And Dividend Yields In Malaysia, David Allen, Imbarine Bujang Jan 2009

Stock Returns And Equity Premium Evidence Using Dividend Price Ratios And Dividend Yields In Malaysia, David Allen, Imbarine Bujang

Research outputs pre 2011

The empirical findings of Goyal and Welch (2003) and Cochrane (2006) suggested that dividend yields and dividend ratios are robust predictors of annual stock returns and annual equity premia. However, Goyal and Welch (2003) asserted that many researchers considered dividend yields to be a good predictor for the equity premium before the 1990s but not after the 1990s. We apply these models to the Malaysian market. Our general findings suggest that the in-sample performances of the KLCI Malaysian datasets present similar results to those predicted by Goyal and Welch (2003, 2006). Meanwhile, the Mincer-Zarnowitz (1969) regression forecast tests for out …

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Conditional Beta Capital Asset Pricing Model (Capm) And Duration Dependence Tests, David E. Allen, Imbarine Bujang Jan 2009

Conditional Beta Capital Asset Pricing Model (Capm) And Duration Dependence Tests, David E. Allen, Imbarine Bujang

Research outputs pre 2011

This paper uses a sample of 50 companies continuously listed on Main Board of Bursa Malaysia from January 1994 until December 2001 and uses duration dependence tests whilst applying two asset pricing models based on the CAPM; the two Factor Model developed by Fama and French (F&F)(1998) and Ferson, Sarkissian and Simin’s (FSS) (2008) conditional beta model applied to estimate the conditional beta of CAPM as to generate the positive and negative abnormal returns. The findings suggest that both the Log Logistic and Weibull hazard models seem to support the existence of negative duration dependence for both positive and negative …

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Pricing Options By Simulation Using Realized Volatility, David E. Allen, Michael Mcaleer, Marcel Scharth Jan 2009

Pricing Options By Simulation Using Realized Volatility, David E. Allen, Michael Mcaleer, Marcel Scharth

Research outputs pre 2011

A growing literature advocates the use of high-frequency data for the purpose of volatility estimation. However, despite the successes in modeling the conditional mean of realized volatility empirical evaluations of this class of models outside the realm of short run forecasting is limited. How can realized volatility be used for pricing options? What are the modeling qualities introduced by realized volatility models for pricing derivatives? In this short paper, we propose an options pricing framework based on a new realized volatility model that captures all the relevant empirical regularities of the realized volatility series of the S&P 500 index. We …

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Review Of Educational And Other Approaches To Hearing Loss Among Indigenous People, Samantha Burrow, Ann Galloway, Natalie Weissofner Jan 2009

Review Of Educational And Other Approaches To Hearing Loss Among Indigenous People, Samantha Burrow, Ann Galloway, Natalie Weissofner

Research outputs pre 2011

This review article summarizes the available literature regarding educational and other approaches to hearing loss among Indigenous preschool and school children of Australia (i.e. both Aboriginal and Torres Strait Islander people). Particular attention is given to the: impact of hearing loss; factors contributing to hearing loss; prevention and management of otitis media and hearing loss; education strategies addressing hearing loss; and policies and policy implications for reducing hearing loss and its educational consequences.

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Iterated Prisoner's Dilemma For Species, Philip Hingston Jan 2009

Iterated Prisoner's Dilemma For Species, Philip Hingston

Research outputs pre 2011

The Iterated Prisoner's Dilemma (IPD) is widely used to study the evolution of cooperation between self-interested agents. Existing work asks how genes that code for cooperation arise and spread through a single-species population of IPD playing agents. In this paper, we focus on competition between different species of agents. Making this distinction allows us to separate and examine macroevolutionary phenomena. We illustrate with some species-level simulation experiments with agents that use well-known strategies, and with species of agents that use team strategies.

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Areit Returns From 1990-2008: A Multi-Factor Approach, Jaime Yong, David E. Allen, Lee K. Lim Jan 2009

Areit Returns From 1990-2008: A Multi-Factor Approach, Jaime Yong, David E. Allen, Lee K. Lim

Research outputs pre 2011

Australian Real Estate Investment Trusts (AREITs) have experienced substantial growth and popularity since 1993. Amongst the major themes surrounding this sector during this time, were the increased attention from institutional investors, the trend towards and away from property-type diversification, significant merger and acquisition activities which led to increased trust size, the debate between internally versus externally managed trust structures, increased gearing levels, and the focus towards diversification into international property assets. While the AREIT sector had benefit from the increased flow of funds from institutional investors during the 1997 Asian financial crisis, the recent impact of the 2008 global financial …

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Environmental Education In Small Business: The Owner-Manager's Perspective, Janice Redmond, Elizabeth Walker Jan 2009

Environmental Education In Small Business: The Owner-Manager's Perspective, Janice Redmond, Elizabeth Walker

Research outputs pre 2011

Traditionally, environmental education has been aimed at the community or in primary schools and governmental pressure to reduce environmental damage has focussed on large businesses. More recently, the role and importance of small business and how to engage them in the environmental debate has come under scrutiny. Researchers have identified education as one method of increasing the understanding of small business owner-managers’ role and knowledge of practices that, when implemented, will reduce the negative impacts of their businesses. However, there is little attention given in the literature to the perspective of the small business owner-manager and environmental education. This research …

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The Australian Imaging, Biomarkers And Lifestyle (Aibl) Study Of Aging: Methodology And Baseline Characteristics Of 1112 Individuals Recruited For A Longitudinal Study Of Alzheimer's Disease, Kathryn Ellis, Ashley Bush, David Darby, Daniel De Fazio, Jonathan Foster, Peter Hudson, Nicola Lautenschlager, Nat Lenzo, Ralph Martins, Paul Maruff, Colin Masters, Andrew Milner, Kevin Pike, Christopher Rowe, Greg Savage, Cassandra Szoeke, Kevin Taddei, Victor Villemagne, Michael Woodward, David Ames Jan 2009

The Australian Imaging, Biomarkers And Lifestyle (Aibl) Study Of Aging: Methodology And Baseline Characteristics Of 1112 Individuals Recruited For A Longitudinal Study Of Alzheimer's Disease, Kathryn Ellis, Ashley Bush, David Darby, Daniel De Fazio, Jonathan Foster, Peter Hudson, Nicola Lautenschlager, Nat Lenzo, Ralph Martins, Paul Maruff, Colin Masters, Andrew Milner, Kevin Pike, Christopher Rowe, Greg Savage, Cassandra Szoeke, Kevin Taddei, Victor Villemagne, Michael Woodward, David Ames

Research outputs pre 2011

Background: The Australian Imaging, Biomarkers and Lifestyle (AIBL) flagship study of aging aimed to recruit 1000 individuals aged over 60 to assist with prospective research into Alzheimer's disease (AD). This paper describes the recruitment of the cohort and gives information about the study methodology, baseline demography, diagnoses, medical comorbidities, medication use, and cognitive function of the participants. Methods: Volunteers underwent a screening interview, had comprehensive cognitive testing, gave 80 ml of blood, and completed health and lifestyle questionnaires. One quarter of the sample also underwent amyloid PET brain imaging with Pittsburgh compound B (PiB PET) and MRI brain imaging, and …

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Raising Heart Rate With Dance Pad Based Computer Games, Martin Masek, Philip Hingston, Matthew Carrigy, Liam Collins, Kazunori Nosaka Jan 2009

Raising Heart Rate With Dance Pad Based Computer Games, Martin Masek, Philip Hingston, Matthew Carrigy, Liam Collins, Kazunori Nosaka

Research outputs pre 2011

No abstract provided.

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Adiabatically Induced Coherent Josephson Oscillations Of Ultracold Atoms In An Asymmetric Two-Dimensional Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Kamal Alameh Jan 2009

Adiabatically Induced Coherent Josephson Oscillations Of Ultracold Atoms In An Asymmetric Two-Dimensional Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Kamal Alameh

Research outputs pre 2011

We propose a new method to create an asymmetric two-dimensional magnetic lattice which exhibits magnetic band gap structure similar to semiconductor devices. The quantum device is assumed to host bound states of collective excitations formed in a magnetically trapped quantum degenerate gas of ultracold atoms such as a Bose-Einstein condensate (BEC) or a degenerate Fermi gas. A theoretical framework is established to describe possible realization of the exciton-Mott to discharging Josephson states oscillations in which the adiabatically controlled oscillations induce ac and dc Josephson atomic currents where this effect can be used to transfer n Josephson qubits across the asymmetric …

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Multipartite Entanglement In A Discrete Magnetic Bands Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Mikhail Vasiliev, Kamal Alameh Jan 2009

Multipartite Entanglement In A Discrete Magnetic Bands Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Mikhail Vasiliev, Kamal Alameh

Research outputs pre 2011

An asymmetric multi-quantum state magnetic lattice is proposed to host entangled system formed by using Bose Einstein Condensate. Discrete magnetic bands magnetic lattice is devised to locate a controllable long-range entanglement of a many qubits well separated in space. Confinement of the system may improve the condition for long-range entanglement.

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The Implementation Of The Framework Of 21st Century Schools: A Comparison Of Two Rural, West Virginia High Schools., Cynthia Phillips Kolsun Jan 2009

The Implementation Of The Framework Of 21st Century Schools: A Comparison Of Two Rural, West Virginia High Schools., Cynthia Phillips Kolsun

Graduate Theses, Dissertations, and Problem Reports (ETD)

While prior research exists that high schools need to make changes to meet the needs of the students of the 21st Century, no research exists from the perspective of the teacher who must implement the changes. This qualitative study provides a comparison of two rural model 21st Century high schools in West Virginia, both members of the High Schools That Work network, and factors that impacted their initial benchmarking of 21st Century through a cross case analysis. The purpose of this study was to add to the body of knowledge concerning the factors that affecting the West Virginia framework of …

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Annual Report 2008, Dexia Jan 2009

Annual Report 2008, Dexia

Documents

No abstract provided.

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Identification And Characterization Of Novel Astroviruses, Stacy Finkbeiner Jan 2009

Identification And Characterization Of Novel Astroviruses, Stacy Finkbeiner

All Theses and Dissertations (ETDs)

Approximately 1.8 million children die from diarrhea annually, and millions more suffer multiple episodes of nonfatal diarrhea. Despite the availability of improved molecular diagnostics to detect the known viral agents, the etiology of a large proportion of diarrheal cases is unknown. In fact, it is estimated that no causative agent can be identified in up to 40% of sporadic cases or in gastroenteritis outbreaks. Detection of novel or unexpected viruses is the first step in identifying agents that could potentially close the diagnostic gap and pave the way for the development of more comprehensive preventative measures and better treatments. This …

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North Dakota Climate Bulletin: Vol. 3, No. 4 (Fall 2009), Adnan Akyuz Jan 2009

North Dakota Climate Bulletin: Vol. 3, No. 4 (Fall 2009), Adnan Akyuz

North Dakota Quarterly Climate Bulletin

No abstract provided.

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Multi-Proxy Palaeoclimate Reconstruction Of The Permian-Triassic Mass Extinction Event, Timothy Kearsey Jan 2009

Multi-Proxy Palaeoclimate Reconstruction Of The Permian-Triassic Mass Extinction Event, Timothy Kearsey

School of Geography, Earth and Environmental Sciences Theses

The Permian/Triassic (P/Tr) boundary is widely assumed to have been a time of extreme environmental upheaval and change. In the terrestrial realm, a negative anomaly in 813C isotope values has been reported from organic carbon in Antarctica, Australia, India and Madagascar, and from marine carbonate in the Karoo Basin. However, these sections are all from southern palaeolatitudes. Analysis from the Permian-Triassic terrestrial sedimentary record of the South Urals, in Russia, comprising of many Aridisol and Vertisol horizons has revealed that, like the Southern Hemisphere, there is a dramatic change in paleosol morphology across the P/Tr boundary linked to a shift …

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Measurement And Modelling Of Structure And Pore Level Processes In Filters And Wicks, John Charles Price Jan 2009

Measurement And Modelling Of Structure And Pore Level Processes In Filters And Wicks, John Charles Price

School of Geography, Earth and Environmental Sciences Theses

Characterisation of new filtration and wicking materials through a 'wet-bench" testing process is a requirement for many filtration companies before new products can be released to market. A reduction in this testing commitment through the application of successful computational based models, requiring minimal empirical input, would undoubtedly result in huge financial savings and reductions in testing lead times. Such models could offer total media characterisation and could also aid further insights into many filtration and wicking processes which before would have required an expensive combination of different testing procedures. In this research, a depth filtration model has been developed, based …

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Backscatter And Attenuation Characterization Of Ventricular Myocardium, Allyson Gibson Jan 2009

Backscatter And Attenuation Characterization Of Ventricular Myocardium, Allyson Gibson

All Theses and Dissertations (ETDs)

This Dissertation presents quantitative ultrasonic measurements of the myocardium in fetal hearts and adult human hearts with the goal of studying the physics of sound waves incident upon anisotropic and inhomogeneous materials. Ultrasound has been used as a clinical tool to assess heart structure and function for several decades. The clinical usefulness of this noninvasive approach has grown with our understanding of the physical mechanisms underlying the interaction of ultrasonic waves with the myocardium. In this Dissertation, integrated backscatter and attenuation analyses were performed on midgestational fetal hearts to assess potential differences in the left and right ventricular myocardium. The …

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Interval Estimation Of Excess Risk Related Effective Doses In Tobit Models, Jia Wang Jan 2009

Interval Estimation Of Excess Risk Related Effective Doses In Tobit Models, Jia Wang

All Theses and Dissertations (ETDs)

No abstract provided.

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A Quest For Meaning In Spontaneous Brain Activity - From Fmri To Electrophysiology To Complexity Science, Biyu He Jan 2009

A Quest For Meaning In Spontaneous Brain Activity - From Fmri To Electrophysiology To Complexity Science, Biyu He

All Theses and Dissertations (ETDs)

The brain is not a silent, complex input/output system waiting to be driven by external stimuli; instead, it is a closed, self-referential system operating on its own with sensory information modulating rather than determining its activity. Ongoing spontaneous brain activity costs the majority of the brain's energy budget, maintains the brain's functional architecture, and makes predictions about the environment and the future. I have completed three separate studies on the functional significance and the organization of spontaneous brain activity. The first study showed that strokes disrupt large-scale network coherence in the spontaneous functional magnetic resonance imaging: fMRI) signals, and that …

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