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2005

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A Critical Exploration Of The School Context For Young Adolescents Completing Primary Education, Sasha Stumpers, Lauren Breen, Julie Ann Pooley, Lynne Cohen, Lisbeth Pike Jan 2005

A Critical Exploration Of The School Context For Young Adolescents Completing Primary Education, Sasha Stumpers, Lauren Breen, Julie Ann Pooley, Lynne Cohen, Lisbeth Pike

Research outputs pre 2011

Many schools have adopted relational approaches to attend to the social context in which learning transpires. More recently however, such approaches and their supporters have been criticized for not examining the school context in its entirety and the student experience within this context. The current research sought to critically explore young adolescents' experiences within the context of their school. Fifteen year seven students in an Australian primary school were interviewed about their experiences of their school context. The data were analysed using a thematic analysis and a question-ordered matrix was constructed to aid the detection of themes and sub-themes from …

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Using In-Depth Interviewing To Evaluate Deep Learning In Students Who Use Online Curriculum: A Literature Review, Maria Woodhouse Jan 2005

Using In-Depth Interviewing To Evaluate Deep Learning In Students Who Use Online Curriculum: A Literature Review, Maria Woodhouse

Research outputs pre 2011

There are numerous difficulties associated with evaluating student experience of online curriculum, not least of which is the fact that different research methods elicit different types of information. The usefulness of choosing either quantitative or qualitative methods depends on their power to bear upon the research questions. This concept paper presents the learning experience as a qualitative event and argues that the in-depth interview is an apt tool for discovering to what extent students experience deep-learning in studying online subjects. To this end, this concept paper will consider the literature surrounding the in-depth interview as a research method. It will …

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Can Sense Of Community Inform Social Capital?, Julie Ann Pooley, Lynne Cohen, Lisbeth Pike Jan 2005

Can Sense Of Community Inform Social Capital?, Julie Ann Pooley, Lynne Cohen, Lisbeth Pike

Research outputs pre 2011

This paper examines the theoretical linkage between social capital and sense of community through research studies within four contextual areas. Social capital (SC) can be conceptualized as all the interactions between individuals in a community, and has been examined in various groups and communities. Sense of community (SoC) is a psychological construct that we argue is a correlate of social capital. Sense of community reflects the feelings of attachment and belonging that an individual has towards a community. Through qualitative and quantitative research carried out across the lifespan in four communities in Western Australia (i.e., Perth community, adolescent Jewish community, …

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Potential Bluetooth Vulnerabilities In Smartphones, Lih Wern Wong Jan 2005

Potential Bluetooth Vulnerabilities In Smartphones, Lih Wern Wong

Research outputs pre 2011

Smartphone vendors have been increasingly integrating Bluetooth technology into their devices to increase accessible and convenience for users. As the current inclination of integrating PDA and telephony increase, the likelihood of sensitive information being stored on such a device is also increased. Potential Bluetooth vulnerabilities could provide alternative means to compromise Bluetooth-enable smartphones, leading to severe data breaches. This paper gives an insight on potential security vulnerabilities in Bluetooth-enabled smartphones and how these vulnerabilities may affect smartphone users. This paper is discussed from the viewpoint of Bluetooth weaknesses and implementation flaws, which includes pairing, weak key storage, key disclosure, key …

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Identity Synthesis: Creating An Identity From Scratch, Lennon Hopkins Jan 2005

Identity Synthesis: Creating An Identity From Scratch, Lennon Hopkins

Research outputs pre 2011

A substantial quantity of research has previously been conducted into the identification and application of measures related to the detection and prevention of identity theft and identity fraud. In the current security conscious environment, the concept of creating an artificial identity is generally met with both caution and suspicion. Much of the attention placed on the concept of identity fabrication has been focused on the unlawful or the malicious use of created identities. Admittedly, the primary intention of a falsified identity is to usually gain a financial benefit however, instances such as long-term witness protection would provide a legitimate need …

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Image Segmentation Using Neuromorphic Integrate And Fire Cells, Gregory Crebbin Jan 2005

Image Segmentation Using Neuromorphic Integrate And Fire Cells, Gregory Crebbin

Research outputs pre 2011

This paper introduces an electronic circuit implementation of an integrate-and-fire cell. The cell generates output current pulses when the input light intensity exceeds a given threshold. A firing cell also transmits its firing pattern to neighbouring cells, thereby causing blocks of cells to fire in synchrony when their detectors receive similar input light intensities. The synchronicity and frequency of the pulses can be used to code an image into separate regions or objects. The actions of the cell are demonstrated with the simulation of a linear 8-cell array

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Establishing Physical Survivability Of Large Networks Using Properties Of Two-Connected Graphs, Daryoush Habibi, Hoang N. Nguyen, Quoc Viet Phung, Kung-Meng Lo Jan 2005

Establishing Physical Survivability Of Large Networks Using Properties Of Two-Connected Graphs, Daryoush Habibi, Hoang N. Nguyen, Quoc Viet Phung, Kung-Meng Lo

Research outputs pre 2011

Establishing the physical survivability of large networks is not a trivial task. Some techniques for assessing physical survivability such as the cutset method can not deal with large size networks (S. Ramamurthy and B. Mukherjee), (W.N. Grover and J. Doucette, 2001). A fast technique for finding biconnected components of a graph and testing the network for node-/link-bridges, presented in (W.D. Grover, 2004), does not provide any further information, such as identifying the fundamental cycles within the network, which would significantly benefit the next phase of network design for protection using such techniques as shared backup path protection (SBPP), p-cycle, or …

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An Observational Study Of Bail Decision-Making, Alfred Allan, Maria Allan, Margaret Giles, Deirdre Drake, Irene Froyland Jan 2005

An Observational Study Of Bail Decision-Making, Alfred Allan, Maria Allan, Margaret Giles, Deirdre Drake, Irene Froyland

Research outputs pre 2011

Pre-trial detention of defendants has important legal, human rights and practical implications for defendants, their families, and society and therefore the area justifies research scrutiny. However, there is a dearth of empirical studies of bail decision-making and most of them have been retrospective studies. Prior studies have nevertheless identified a number of purported shortcomings in bail legislation and decision-making. The rarely used observational methodology employed in this study provided data that are not normally available from official records. The first appearances of 648 defendants were observed in the lower courts in metropolitan Perth (Western Australia) to identify factors that play …

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An Analogue Recurrent Neural Networks For Trajectory Learning And Other Industrial Applications, Ganesh Kothapalli Jan 2005

An Analogue Recurrent Neural Networks For Trajectory Learning And Other Industrial Applications, Ganesh Kothapalli

Research outputs pre 2011

A real-time analogue recurrent neural network (RNN) can extract and learn the unknown dynamics (and features) of a typical control system such as a robot manipulator. The task at hand is a tracking problem in the presence of disturbances. With reference to the tasks assigned to an industrial robot, one important issue is to determine the motion of the joints and the effector of the robot. In order to model robot dynamics we use a neural network that can be implemented in hardware. The synaptic weights are modelled as variable gain cells that can be implemented with a few MOS …

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Vlsi Implementation Of A Skin Detector Based On A Neural Network, Farid Boussaid, Abdesselam Bouzerdoum, Douglas Chai Jan 2005

Vlsi Implementation Of A Skin Detector Based On A Neural Network, Farid Boussaid, Abdesselam Bouzerdoum, Douglas Chai

Research outputs pre 2011

This paper describes the VLSI implementation of a skin detector based on a neural network. The proposed skin detector uses a multilayer perception with three inputs, one hidden layer, one output neuron and a saturating linear activation function to simplify the hardware implementation. The skin detector achieves a classification accuracy of 88.76%. To reduce mismatch associated errors, a single skin detection processing unit is used to classify all pixels of the input RGB image. The current-mode fully analog skin detection processing circuitry only performs computations during the read-out phase, enabling real-time processing. Fully programmable, the proposed skin detection processing circuitry …

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A Shared Backup Path Protection Scheme For Optical Mesh Networks, Hoang N. Nguyen, Daryoush Habibi, Quoc Viet Phung, Kungmang Lo Jan 2005

A Shared Backup Path Protection Scheme For Optical Mesh Networks, Hoang N. Nguyen, Daryoush Habibi, Quoc Viet Phung, Kungmang Lo

Research outputs pre 2011

We propose a new heuristic ILP model for share backup path protection (SBPP) scheme of mesh networks, which used the sets of disjoint-joint primary-backup path candidates of using path-pair candidates. The solution of the model is near optimal and provides all the routing details of demands as well as the sharing information between backup paths, and also simplifies the wavelength assignment problem if the wavelength continuity is a consideration. The new entities are introduced into this model that allow to control the resource utilization as well as congestion level of the network for optimization purposes and the pre-processing of data …

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Nitrate Reductase Activity In Macroalgae And Its Vertical Distribution In Macroalgal Epiphytes Of Seagrasses, Erica Young, Paul Lavery, Beverley Van Elven, Mat Dring, John A Berges Jan 2005

Nitrate Reductase Activity In Macroalgae And Its Vertical Distribution In Macroalgal Epiphytes Of Seagrasses, Erica Young, Paul Lavery, Beverley Van Elven, Mat Dring, John A Berges

Research outputs pre 2011

Macroalgal epiphytes within seagrass meadows make a significant contribution to total primary production by assimilating water column N and transferring organic N to sediments. Assimilation of NO3 – requires nitrate reductase (NR, EC 1.6.6.1); NR activity represents the capacity for NO3 – assimilation. An optimised in vitro assay for determining NR activity in algal extracts was applied to a wide range of macroalgae and detected NR activity in all 22 species tested with activity 2 to 290 nmolNO3 – min–1 g–1 frozen thallus. With liquid-N2 freezing immediately after sample collection, this method was practical for estimating NR activity in field …

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Effects Of Massage On Delayed-Onset Muscle Soreness, Swelling, And Recovery Of Muscle Function, Zainal Zainuddin, Michael Newton, Paul Sacco, Kazunori Nosaka Jan 2005

Effects Of Massage On Delayed-Onset Muscle Soreness, Swelling, And Recovery Of Muscle Function, Zainal Zainuddin, Michael Newton, Paul Sacco, Kazunori Nosaka

Research outputs pre 2011

No abstract provided.

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Capacity Utilization Versus Congestion Levels In Wavelength Routing For Large Scale Wdm Networks, Quoc Viet Phung, Daryoush Habibi, Hoang N. Nguyen, Kungmang Lo Jan 2005

Capacity Utilization Versus Congestion Levels In Wavelength Routing For Large Scale Wdm Networks, Quoc Viet Phung, Daryoush Habibi, Hoang N. Nguyen, Kungmang Lo

Research outputs pre 2011

Wavelength routing (WR) has been a key issue in WDM optical networks which carry huge amount of traffic aggregated from Internet protocol (IP), asynchronous transfer mode (ATM) and SDH/SONET layers. The problem, however, has been proved NP-hard. The time complexity and the optimality of solutions are two conflicting metrics. In addition, for optimization purposes, capacity utilization and network congestion level can be compromised to reduce the blocking probability of future connections. In this paper, we propose a heuristic approach for WR in large scale networks based on a balanced model developed for the capacity utilization and the congestion level. This …

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K Pair Of Disjoint Paths Algorithm For Protection In Wdm Optical Networks, Quoc Viet Phung, Daryoush Habibi, Hoang N. Nguyen, Kungmang Lo Jan 2005

K Pair Of Disjoint Paths Algorithm For Protection In Wdm Optical Networks, Quoc Viet Phung, Daryoush Habibi, Hoang N. Nguyen, Kungmang Lo

Research outputs pre 2011

Survivable routing in wavelength division multiplexing (WDM) optical networks has been proven to be NP-hard problem. There is a trade-off between the computational time and the optimality of solutions in existing approaches to the problem. Existing heuristic approaches purely based the graph algorithms are efficient in computational time but do not offer optimal solutions and may fail in some cases even when a solution exists. Meanwhile, the integer linear programming (ILP) models offer optimal solutions but are intractable even with moderate scale networks. In this paper, we introduce a new algorithm for finding K pairs of disjoint paths which are …

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Dynamic P-Cycles Selection In Optical Wdm Mesh Networks, Kungmang Lo, Daryoush Habibi, Quoc Viet Phung, Hoang Nguyen, Byungkyu Kang Jan 2005

Dynamic P-Cycles Selection In Optical Wdm Mesh Networks, Kungmang Lo, Daryoush Habibi, Quoc Viet Phung, Hoang Nguyen, Byungkyu Kang

Research outputs pre 2011

P-cycles have been recognized as a useful protection scheme in WDM mesh networks. This is a type of shared link protection that not only retains the mesh-like capacity efficiency, but also achieves the ring-like protection switching speed. However, finding the optimal set of p-cycles for protecting traffic demands is not a simple task and is an NP-hard problem. A general approach is to determine a set of candidate p-cycles and then determine optimal or near-optimal solutions by using integer linear programming (ILP) models or heuristics. In a dense mesh network, however, the number of candidate cycles is huge, and increases …

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Dynamic Wavelength Routing In All Optical Mesh Network, Kungmang Lo, Daryoush Habibi, Quoc Viet Phung, Hoang Nghia Nguyen Jan 2005

Dynamic Wavelength Routing In All Optical Mesh Network, Kungmang Lo, Daryoush Habibi, Quoc Viet Phung, Hoang Nghia Nguyen

Research outputs pre 2011

Wavelength-division multiplexing (WDM) offers the capability to handle the increasing demand of network traffic in a manner that takes advantage of already deployed optical fibers. Lightpaths are optical connections carried end-to-end over a wavelength on each intermediate link. Wavelengths are the main resource in WDM networks. Due to the inherent channel constraints, a dynamic control mechanism is required to efficiently utilize the resource to maximize lightpath connections. In this paper, we investigate a class of adaptive routing called dynamic wavelength routing (DWR), in which wavelength converters (WCs) are not utilized in the network. The objective is to maximize the wavelength …

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Region Segmentation For Facial Image Compressing, Alexander Tropf, Douglas Chai Jan 2005

Region Segmentation For Facial Image Compressing, Alexander Tropf, Douglas Chai

Research outputs pre 2011

This paper addresses the segmentation of passport images in order to improve quality of significant regions and to further reduce redundancy of insignificant ones. The approach is to first segment a facial image into two major regions, namely background and foreground. Here a new technique using pixel difference is presented. To compress facial regions at better quality, a face segmentation algorithm is introduced that detects eyes and mouth in a face. Region of interest (ROI) coding is then used to obtain better quality for facial features. At the end, some strategies that make use of region segmentation are proposed in …

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Effects Of Partial Immobilization After Eccentric Exercise On Recovery From Muscle Damage, Zainal Zainuddin, Peter Hope, Michael Newton, Paul Sacco, Kazunori Nosaka Jan 2005

Effects Of Partial Immobilization After Eccentric Exercise On Recovery From Muscle Damage, Zainal Zainuddin, Peter Hope, Michael Newton, Paul Sacco, Kazunori Nosaka

Research outputs pre 2011

Context: Short-term strict immobilization of the arm using a cast enhances recovery of muscle function after eccentric exercise. Objective: To determine if placing one arm in a sling (‘‘light’’ immobilization) for 4 days after eccentric exercise of the elbow flexor muscles would reduce muscle soreness and enhance recovery compared with the exercised but not immobilized contralateral arm. Design: Subjects performed 10 sets of 6 maximal isokinetic (90·s 1) eccentric actions of the elbow flexors of each arm ona Cybex dynamometer, separated by 2 weeks. Setting: University laboratory. Patients or Other Participants: Ten healthy subjects (5 menand 5 women) with no …

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Broadband Static Micro-Delay Lines Generation For Oct, Kamal Alameh, David Sampson, Zhenglin Wang, Rong Zheng, Chung Poh Jan 2005

Broadband Static Micro-Delay Lines Generation For Oct, Kamal Alameh, David Sampson, Zhenglin Wang, Rong Zheng, Chung Poh

Research outputs pre 2011

In this paper we propose a novel technique to generate variable true time micro-delay for fibre-based optical coherent tomography (OCT) using two Opto-VLSI processors. The technique offers broadband high resolution scanning depth without moving parts. The beam steering and multicasting capabilities of the Opto-VLSI processors provide a valuable scanning tool allowing the delay generator to jump between nonadjacent depths and realising multiple delays simultaneously. Experimental results achieved maximum 500 nm delay with 3dB bandwidth is more than 55nm a centre wavelength 1550nm.

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Throughput And Delay Optimization In Wdm Fddi Optical Network, Muhsen Aljada, Kamal Alameh, Khalid Al-Begain Jan 2005

Throughput And Delay Optimization In Wdm Fddi Optical Network, Muhsen Aljada, Kamal Alameh, Khalid Al-Begain

Research outputs pre 2011

The rapidly growing Internet traffic are driving the demands for higher transmission capacity and higher processing speed, especially for the backbone networks. To support such bandwidth usage an optical Fiber Distributed Data Interface Wavelengtg Division Multiplexed (FDDI/WDM) network is proposed, wherein the wavelength channels are amplified using Erbium-Doped Fiber Amplifiers (EDFA's) to compensate for the losses over the optical fiber span. In this paper we investigate the network performance for both asynchronous and synchronous transmissions by measuring the amplified spontaneous emission (ASE) along the ring, the optical signal to noise ratio (OSNR) and the electrical SNR at different destinations. The …

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A Novel Microphotonic Structure For Optical Header Recognition, Muhsen Aljada, Kamal Alameh, Adam Osseiran, Khalid Al-Begain Jan 2005

A Novel Microphotonic Structure For Optical Header Recognition, Muhsen Aljada, Kamal Alameh, Adam Osseiran, Khalid Al-Begain

Research outputs pre 2011

In this paper, we propose and demonstrate a new MicroPhotonic structure for optical packet header recognition based on the integration of an optical cavity, optical components and a photoreceiver array. The structure is inherently immune to optical interference thereby routing an optical header within optical cavities to different photo receiver elements to generate the autocorrelation function, and hence the recognition of the header using simple microelectronic circuits. The proof-of-concept of the proposed MicroPhotonic optical header recognition structure is analysed and experimentally demonstrated, and results show excellent agreement between measurements and theory.

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Parametric Fault Modelling For Photonics System, Muhsen Aljada, Adam Osseiran, Kamal Alameh Jan 2005

Parametric Fault Modelling For Photonics System, Muhsen Aljada, Adam Osseiran, Kamal Alameh

Research outputs pre 2011

In this paper we investigate the impact of the most probable parametric faults generated by mal-functioning components in phonetic systems. We demonstrate, using the example of a MicroPholonic header correlator, the effectiveness of mixed-signals testing techniques for fault detection in photonic systems.

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Design Of Reconfigurable Optical Interconnects Employing Opto-Vlsi Processors, Roger Jeffery, Kamal Alameh, Mikhail Vasiliev Jan 2005

Design Of Reconfigurable Optical Interconnects Employing Opto-Vlsi Processors, Roger Jeffery, Kamal Alameh, Mikhail Vasiliev

Research outputs pre 2011

We investigate the design and performance of a reconfigurable optical interconnect structure based on vertical-cavity surface-emitting lasers (VCSEL), Opto-VLSI processors and photodetector arrays. We optimise a proof-of-concept 3-VCSEL-element structure that eliminates crosstalk caused by unwanted diffracted optical beams and show that a bit error role (BER) of 10'17 is feasible at 3.2 Gbps for each channel.

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Optimisation Of Opto-Ulsi Processor Performance Using Closed-Loop Feedback, Chung Poh, Kamal Alameh, Rong Zheng Jan 2005

Optimisation Of Opto-Ulsi Processor Performance Using Closed-Loop Feedback, Chung Poh, Kamal Alameh, Rong Zheng

Research outputs pre 2011

In this paper, an algorithm based on multi-variable Newton-Raphson method is developed to optimise the steering efficiency of a I-D Opto-USLI processor. The algorithm enables the evaluation of the phase-voltage relationship of the Opto-ULSI processor using realtime power measurements. The optimisation algorithm reported in the paper is crucial for reconfigurable photonic systems such as optical add drop multiplexers, optical switches, tunable optical filters and WDM equalizers.

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Optimised Nano-Engineered 1-D Magnetophotonic Crystals For Integrated-Optical Modulators, Mikhail Vasiliev, Kamal Alameh, Vladimir Belotelov, Vyacheslav Kotov, Anotoly Zvezdin Jan 2005

Optimised Nano-Engineered 1-D Magnetophotonic Crystals For Integrated-Optical Modulators, Mikhail Vasiliev, Kamal Alameh, Vladimir Belotelov, Vyacheslav Kotov, Anotoly Zvezdin

Research outputs pre 2011

The optimization of multilayer ID megnetophotonic crystals with mulitple nano-engineered defects enables novel practical photonics applications. The properties of several optimized structures suitable for infrared intensity modulators are discussed. A novel approach to the design of integrated multi-channel WDM/DWDM transmission loss equalizers is proposed. We also show the effect of material absorption on the spectral properties of magnetic phtonic crystals, which is a factor of primary importance for the design of short-wavelenght infrared modulators.

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Taxonomy Of Wrt54g(S) Hardware And Custom Firmware, Marwan Al-Zarouni Jan 2005

Taxonomy Of Wrt54g(S) Hardware And Custom Firmware, Marwan Al-Zarouni

Research outputs pre 2011

This paper discusses the different versions of hardware and firmware currently available for the Linksys WRT54G and WRT54GS router models. It covers the advantages, disadvantages, and compatibility issues of each one of them. The paper goes further to compare firmware added features and associated filesystems and then discusses firmware installation precautions and ways to recover from a failed install.

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Dynamic Opto-Vlsi Lens And Lens-Let Generation With Programmable Focal Length, Zhenglin Wang, Kamal Alameh, Rong Zheng, Salem Adherom Jan 2005

Dynamic Opto-Vlsi Lens And Lens-Let Generation With Programmable Focal Length, Zhenglin Wang, Kamal Alameh, Rong Zheng, Salem Adherom

Research outputs pre 2011

In this paper we present and demonstrate a dynamic lens and lens array generation method with programmable focal length based on an Opto-VLSI processor. The Opto-VLSI is driven by computer generated algorithm to generate a discrete Fresnel lens phase hologram. By optimizing the phase hologram, lenses and lens arrays of different focal lengths ranging from 300mm to infinity can be realized. The optical axis of each lens element can be independently addressed to simultaneously focus and steer an optical beam within an angular range of ±0.5°.

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Dynamic Wavefront Generation Technology Using Optovlsi Processor, Zhenglin Wang, Kamal Alameh, Rong Zheng Jan 2005

Dynamic Wavefront Generation Technology Using Optovlsi Processor, Zhenglin Wang, Kamal Alameh, Rong Zheng

Research outputs pre 2011

In this paper we present a novel approach for dynamic wavefront generatio based on reconfigurable Opto-VLSI processing. Computer algorithms are developed to generate arbitrary quadric-phse lense and lenslet array with programmable focal lenght, beam steering and lens diameter by driving the Opto-VLSI processor with different computer generated phase holograms. Proff-of-concept experimental results show that multiple spheric and aspheric lens/lenslet wavefrongs can be generated with each lens independently addressed. The measured meaximum focal length tuning range is from +80mm to infinity and the beam scanning angular range is +7mrad, which are in excellent agreement with theory. Difference spatial profiles for wavefront …

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Dynamic Spot Generation Using Opto-Vlsi Processing, Zhenglin Wang, Rong Zheng, Kamal Alameh Jan 2005

Dynamic Spot Generation Using Opto-Vlsi Processing, Zhenglin Wang, Rong Zheng, Kamal Alameh

Research outputs pre 2011

In this paper we demonstrate the capability of OptoVLSI processors to generate arbitrary optical power distribution for adaptive optical beam splitting and dynamic optical spot generation. By using the multicasting capability of Opto-VLSI processors, an input optical signal can be dynamically split into N spots array, and the output power of each spot can be independently configured. Experimental results of multiple beam splitting show that dynamic optical multicasting can be achieved with more than 20dB dynamic range. Special patterns are also generated by optimising the phase hologram of the Opto-VLSI processor to place the output beam spots at appropriate positions.

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