Digital Commons Network^™

Dynamic Optical Comb Filter Using Opto-Vlsi Processing, Zhenglin Wang, Kamal Alameh, Rong Zheng, Chung Poh

Research outputs pre 2011

Reconfigurable multi-channel optical filters are presented in this paper. The operation principle of the reconfigurable filter is based on the dynamic beam steering capacity of Opto-VLSI processor in conjunction with a high dispersion free space grating. The dispersion grating separates the input signal spectrum while the Opto-VLSI processor is driven by optimised phase holograms to dynamically select the wavelengths to be coupled into the output port. Experimental results show that up to 8 bands can be synthesised, with a wavelength tuning span of 10 nm and a 3dB bandwidth less than 0.5nm.

Information Systems In Western Australian Universities, Craig Standing, Janice Burn, Chad Lin

Research outputs pre 2011

Systems (IS) teaching and research within Western Australia (WA). A brief overview of the WA environment is followed by an exploration of teaching and research in the four main Universities. This is examined against the framework for the study and, in particular, the impact of social processes (Ariav et al, 1987; Klein et al, 1991) and local contingencies (Culnan et al, 1993; Checkland and Howell, 1998), which are found to be of relevance to historic developments.

The Hillarys Transect (1): Seasonal And Cross-Shelf Variability Of Physical And Chemical Water Properties Off Perth, Western Australia, 1996-98, Alan Pearce, Mervyn Lynch, Christine Hanson

Research outputs pre 2011

A 27-month study of the water properties across the continental shelf off Perth, Western Australia (the "Hillarys Transect") has provided the first systematic inter-disciplinary climatology of the physical, chemical, optical and biological cycles across the shelf. This paper describes the main features of the seasonal and cross-shelf variability of the physical oceanography and chemistry, while companion papers discuss some of the links between the biology and physics of the region

Research Into Integrated Crime Prevention Strategies For Rail Station Environs: Final Report, Trudi Cooper, Terence Love, Erin Donovan

Research outputs pre 2011

The initial impetus for this project arose from concerns about responses to ‘anti-social behaviour’, especially by young people, in and around rail stations. The primary goal of the research was to develop a collaborative approach that provided a more constructive and integrated response that would produce benefit for local communities, for the Public Transport Authority, and for the young people themselves. In practical terms, this involved:

• Development of interagency collaboration processes to support agencies with diverse goals to participate constructively without loss of autonomy;

• Identification at a local level of the common issues of concern, their causes, and …

Free To Be Obese In A 'Super Nanny State'?, Nadine Henley

Research outputs pre 2011

Should individuals be free to make lifestyle decisions (such as what, when and how much to eat and how much physical activity to take), without undue interference from the state, even when their decisions may lead to negative consequences (obesity, heart disease, diabetes)?

Online Student Contracts To Promote Metacognitive Development, Mark Mcmahon, Joseph Luca

Research outputs pre 2011

Knowing about one’s own cognitive ability, and how best to use this ability in understanding new educational content, solving problems and making effective decisions is one of the holy grails of education! Metacognition is widely perceived as being integral to effective learning and much literature and research has been devoted to this area. However online learning environments that effectively support the development of students’ metacognition are rare and difficult to develop. This paper describes one component (the student contract) of an online learning environment designed to support the development of metacognition through a cycle of planning, monitoring and evaluation. Students …

Effect Of Oblique Light Incidence On Magnetooptical Properties Of One-Dimensional Photonic Crystals, Mikhail Vasiliev, Vladimir I. Belotelov, Andrey N. Kalish, Vyacheslav A. Kotov, Anotoly K. Zvezdin, Kamal Alameh

Research outputs pre 2011

We have investigated the magnetooptical properties of one-dimensional magnetic photonic crystals for the case of oblique light incidence. We developed a theoretical model based on the transfer matrix approach. We found several new effects such as transmittance resonance peak shift versus external magnetic field and the Faraday effect dependence on the incidence angle.We discuss several possible one-dimensional magnetic photonic crystals applications for the optical devices.

Sql Injection - Threats To Medical Systems: The Issues And Countermeasures, Craig Valli

Research outputs pre 2011

A vast majority of medical information systems use Standard Query Language databases (SQL) as the underlying technology to deliver medical records in a timely and efficient manner. SQL is a standardised and well entrenched database technology, which allows for the development of robust, customised applications for information management. In recent years, SQL has been used as the back-end to many successful web client accessible applications. The use of SQL in this manner has been greatly enhanced through the development of server side scripting languages such as Microsoft ASP and open source systems such as PHP. These allow for the representation …

Best Practice In Online Assessment: Principles, Processes And Outcomes, Catherine E Mcloughlin, Joseph Luca

Research outputs pre 2011

Instead of using narrowly defined learning outcomes tested by examinations, technology offers a total environment where real life skills, such as written and verbal communication, collaboration and team work can be assessed by the team and tutor by giving learners multiple channels of expression, such as visualisation, multimedia presentations, audio and video resources. Thus, information technologies are closely inter-woven with the quality of the learning experience, and can be used to create authentic tasks for assessment. The paper presents several examples of authentic assesment utising information and communications technology.

Understanding Celebrity And The Public Sphere, Lelia Rosalind Green

Research outputs pre 2011

However, he argues, this is a cause for celebration because the 'old model' ('modernist' construction) of the public sphere suited and benefited an influential minority in society (white, middle-class, educated males) and the new model of the ('postmodern') public sphere increasingly engages the sectors of society systematically excluded and marginalised by modernity's view of what the public sphere should be and does. An Introduction was pitched as a starting point for debate and thus wasn't explicitly addressed to me-after all, I've studied and written on the public sphere myself.18 McKee's book was consequently an unexpected treat and all the more …

A Faster Algorithm For Calculating Hypervolume, Lyndon While, Philip Hingston, Luigi Barone, Simon Huband

Research outputs pre 2011

We present an algorithm for calculating hypervolume exactly, the Hypervolume by Slicing Objectives (HSO) algorithm, that is faster than any that has previously been published. HSO processes objectives instead of points, an idea that has been considered before but that has never been properly evaluated in the literature. We show that both previously studied exact hypervolume algorithms are exponential in at least the number of objectives and that although HSO is also exponential in the number of objectives in the worst case, it runs in significantly less time, i.e., two to three orders of magnitude less for randomly generated and …

Literacy And Recent History Of Diarrhoea Are Predictive Of Plasmodium Falciparum Parasitaemia In Kenyan Adults, Rodney Coldren, Trish Prosser, Fredrick Ogolla, Victor Ofula

Research outputs pre 2011

Background - Malaria is one of the most serious health problems in Kenya. In 2004, the Kenya Medical Research Institute and the US Army Medical Research Unit – Kenya surveyed adults in Samburu, Malindi, and Busia districts to determine socioeconomic risk factors for infection.

Methods - Sociodemographic, health, and antimalarial data were collected along with blood for malaria testing. A smear was considered negative only if no Plasmodium falciparum parasites were observed in 100 high-powered fields. Univariate analysis was performed with Pearson's Chi-square test and univariate logistic regression. A multivariate logistic regression model was then created which included only variables …

The Trial Of Learning Objects: Exploring The Design And Delivery Of Vte Courses With Learning Objects, Ron Oliver, Mark Mcmahon, Peter Higgs, Rose Shum, Lisa Wait, Domenic Lou

Research outputs pre 2011

This paper describes a project undertaken in the Australian vocational training and education (VTE) sector that sought to investigate success factors associated with the design and delivery of courses using learning objects (LOs). The project explored the strategies used by three teachers as they used digital repositories to discover learning objects, and then applied the objects through a content management system to create online courses. The paper reports the factors that were found to influence the online learning settings that resulted and teachers' perceptions of LOs as building blocks for online courses.

Changes In Demersal Wild Fish Aggregations Beneath A Sea-Cage Fish Farm After The Cessation Of Farming, Fernando Tuya, Pablo Sanchez-Jerez, Tim Dempster, Arturo Boyra, R Haroun

Research outputs pre 2011

Demersal, non-cryptic, wild fish were counted in replicate 100 m2 transects beneath a floating sea-cage fish farm and two nearby sandy locations at Gran Canaria (Canary Islands, eastern Atlantic) four times before and after the cessation of farming. Cessation of farming involved the removal of farmed fish and ceasing of the daily feeding, although farm structures (cages and moorings) remained. A “beyond-BACI” sampling design provided the framework to detect the effect of the cessation of farming, which produced qualitative and quantitative changes in the composition and structure of the fish assemblages beneath the sea-cage fish farm compared with two nearby …

Website Usability: A Window Into A Learning Environment, Julia Gross, Lynette Leslie

Research outputs pre 2011

Academic library websites provide a vital online learning environment for students. They should follow sound design principles, provide functionality, and ease of navigation. As part of a strategy to make effective changes to the library website, Edith Cowan University Library wanted to gather evidence to discover how users went about locating information resources accessible from its website. Concerns existed amongst the library staff about how intuitive it was to locate the various information resources provided. This paper will outline the action research process taken to test the website heuristics to determine what improvements were needed in the design. Using Jakob …

Values And M-Services Adoption, Craig Standing, Patricia Mcmanus, Susan Standing, Heikki Karjaluoto

Research outputs pre 2011

The use of mobile services has increased rapidly in recent. Although research has been conducted on which services people use and the benefits they attach to those services, the values associated with the adoption and use of m-services at the individual level is still unclear. This formation systems field various technology adoption models have been proposed and validated in relation to technology adoption within an organisational setting but personal adoption and use of technology is less researched. To help uncover the values behind adoption of m-services we use means-end chains and laddering techniques. The analysis of the interviews shows that …

A Preliminary Investigation Into Malware Propagation On Australian Isp Networks Using The Mwcollect Malware Collector Daemon, Craig Valli

Research outputs pre 2011

This paper describes an initial investigation into the propagation of malicious software (malware) that allows for remote command and control of Internet connected machines using the Windows platform in the Australian ISP address space. The research as conducted utilised the mwcollect daemon which is a low interaction honeypot on the Linux platform, to collect the details about the activity. The program mwcollect works by emulation of vulnerable services on the target platform in this case Windows based computers. There were two collectors within the pilot collection system. The machines were running no other Internet services such as http or mail, …

Aboriginal Students And The Western Australian Literacy And Numeracy Assessment, Sean Gorman

Research outputs pre 2011

Since the introduction of standardised testing in Western Australia with the Western Australian Literacy and Numeracy Assessment (WALNA) it has become quite evident that Indigenous students' performance is well below that of non-Indigenous students.

As WALNA is now very much a part of the pedagogical landscape steps must be taken to ensure that those students who are not reaching the benchmark scores or the MSE requirements do progress...

Developing A Positive Experience Of Introductory Information Systems For Women At Two Australasian Universities, Rosemary Stockdale, Susan Stoney

Research outputs pre 2011

This paper examines how academics can contribute to encouraging greater uptake of IS majors by women. Using a qualitative reflective approach we identify the perceptions and experiences of female undergraduates taking introductory IS courses in two universities, one in Australia and one in New Zealand, and discuss ways in which to improve their learning experience. We examine ways to improve the delivery of introductory IS courses in order to make information systems more relevant and less dreary to women undergraduates. The paper concludes with some recommendations for marketing courses and areas of further research.

Catastrophic And Parametric Fault Modelling For Photonic Systems, Muhsen Aljada, Adam Osseiran, Kamal Alameh

Research outputs pre 2011

In this paper, we investigate the impact of the most common catastrophic and parametric faults in photonic systems. We demonstrate, using the example of a photonic correlator, the effectiveness of testing techniques for fault detection in photonic systems. To the best of our knowledge, this constitutes the first attempt to define a fault model and to develop a test methodology for photonic systems.

Communication On A Health-Related Website Offering Therapeutic Support: Phase 1 Of The Heartnet Website, Leesa N. Bonniface, Lelia Rosalind Green, Maurice G. Swanson

Research outputs pre 2011

This paper investigates the usefulness of a modest-budget website set up to support people recovering from heart-related incidents through a combination of all or some of the following: surgery, drugs, and lifestyle change. Online communities have been shown to offer support for their members. Ideally, the members of this experimental site would eventually constitute an online community. Effective interaction and personal communication indicate that an online community is developing. The opposite is also true: declining and aborted exchanges might indicate a failure to establish community. This paper reports on the first eight weeks of the experimental website HeartNET. As a …

Durum Wheat Quality: Ii. The Relationship Of Kernel Physicochemical Composition To Semolina Quality And End Product Utilisation, J Samaan, Gh El-Khayat, Fa Manthey, Mp Fuller, Cs Brennan

School of Biological and Marine Sciences

Kernel quality characteristics, semolina milling potential, dough rheology and pasta making properties of kernels from nine fully irrigated Syrian durum wheat genotypes were observed. Protein content of the kernels exerted a significant affect on the physical characteristics hardness and the degree of kernel vitreousness, both of which were highly correlated with superior end‐use product. Gluten composition of semolina appeared as significant as overall protein content in determining the optimum end‐use product cooking quality (cooking time and pasta texture). The final viscosity of durum flour exhibited positive correlations with semolina recovery, protein content, gluten content, vitreousness, the optimum‐cooking time of pasta …

Evaluation Of Abiotic Stress Resistance In Mutated Populations Of Cauliflower (Brassica Oleracea Var. Botrytis), Mp Fuller, Emr Metwali, Mh Eed, Aj Jellings

School of Biological and Marine Sciences

An efficient in vitro screening method has been developed for cauliflower to create NEU and NMU induced mutant lines selected on hydroxyproline containing medium. Mutant lines and control plants were sub-cultured many times on maintenance medium and stored at 5°C for 2 years and then tested for salt and hydroxyproline resistance as in vitro and in vivo plants. In vitro shoot tips were also sub-cultured to media containing hydroxyproline and NaCl for 28 days and then assessed for their leaf proline content. Non-acclimated and acclimated in vivo plants were also assessed for resistance to freezing. Populations of control and selected …

Little Understood Knowledge Trap, Hans-Dieter Evers, Solvay Gerke, Thomas Menkhoff

Research Collection Lee Kong Chian School Of Business

As knowledge increases, we realise how much else we do not know. Successful research always results in new questions. Any knowledge economy must be aware of such unknowns if it is to expand further through research and development. Debate on bridging the digital divide does not take this factor into account. Many of the strategies currently preached are misplaced.

National Report On Social Capital - Singapore, Wee Liang Tan

Research Collection Lee Kong Chian School Of Business

No abstract provided.

The 2006 Analysis Of Information Remaining On Disks Offered For Sale On The Second Hand Market, Andrew Jones, Craig Valli, Iain Sutherland, Paula Thomas

Research outputs pre 2011

All organisations, whether in the public or private sector, use computers for the storage and processing of information relating to their business or services, their employees and their customers. A large proportion of families and individuals in their homes now also use personal computers and, both intentionally and inadvertently, often store on those computers personal information. It is clear that most organisations and individuals continue to be unaware of the information that may be stored on the hard disks that the computers contain, and have not considered what may happen to the information after the disposal of the equipment. In …

Leading Hackers Down The Garden Path, Suen Yek

Research outputs pre 2011

Can a hacker be controlled by predetermined deception? Limiting the decision making capabilities of hackers is one technique of network countermeasure that a honeynet enables. By furnishing a honeynet with a realistic range of services but restricted vulnerabilities, a hacker may be forced to direct their attacks to the only available exploits. This research discusses the deployment of a honeynet configured with a deceptive TELNET and TFTP exploit. Four hackers were invited to attack the honeynet and the analysis of their compromise identified if they engaged in a guided pathway to the intended deception. Hand trace analysis was performed on …

A Hybrid P-Cycle Search Algorithm For Protection In Wdm Mesh Networks, Kungmang Lo, Daryoush Habibi, Alexander Rassau, Quoc Viet Phung, Hoang Nguyen, Byung Kang

Research outputs pre 2011

p-Cycle is a type of shared link protection for survivable wavelength-division multiplexing (WDM) mesh networks. p-Cycle not only retains ring-like restoration speeds, but also achieves capacity efficiency in mesh networks. However, finding the optimal set of p-cycles to protect all traffic demands within a reasonable response time is difficult. This is particularity true with dense meshes or large networks, because the number of candidates is huge. Generally, p-cycles are determined by using either Integer Linear Programming (ILP) or specifically designed heuristic algorithms. However, both methods need a set of efficient candidate cycles to tradeoff between the computational time and the …

Opto-Vlsi-Based Correlator Architecture For Multiwavelength Optical Header Recognition, Muhsen Aljada, Kamal E. Alameh, Khalid Al-Begain

Research outputs pre 2011

A novel optical correlator employing an opto-very-large-scale-integration (VLSI) processor to construct the routing lookup table, in conjunction with an array of fiber Bragg gratings (FBGs) for multiwavelength optical header recognition is demonstrated. The FBG array provides wavelength-dependent time delays, whereas the opto-VLSI processor generates wavelength intensity profiles that match arbitrary bit patterns. The recognition of 4-b optical patterns is experimentally demonstrated at 2.2 Gb/s by showing that the correlator produces an autocorrelation waveform of high peak whenever the input bit pattern matches the wavelength intensity profile.

An Automated Sampling Soil Reduction-Oxygenation Rf Sensor Network For Cereal Crop Management, Michael Collins, Christopher C. Holme, Keng T. Tan, Leisa Armstrong

Research outputs pre 2011

There is a need for cost effective tools and data collection methods for field measurements: to increase both productivity and volumes of collected data in the quest for enhanced understanding and management of environmental systems. To such end, we explore the various RF technologies that may be combined into a cost effective soil redox sensor network, discuss the merits of each as a component of said network, describe a prototype soil redox sensor network and present the method and results of laboratory and field tests performed. The experiment was conducted by running the prototype RF based equipment alongside a closely …