Digital Commons Network^™

Effect Of A 5 Min Cold Water Immersion Recovery On Exercise Performance In The Heat, Jeremiah Peiffer, Chris Abbiss, Bradley Wall, Greig Watson, Kazunori Nosaka, Paul Laursen

Research outputs pre 2011

Background This study examined the effect of a 5-min cold-water immersion (14°C) recovery intervention on repeated cycling performance in the heat. Methods 10 male cyclists performed two bouts of a 25-min constant-paced (254 (22) W) cycling session followed by a 4-km time trial in hot conditions (35°C, 40% relative humidity). The two bouts were separated by either 15 min of seated recovery in the heat (control) or the same condition with 5-min cold-water immersion (5th—10th minute), using a counterbalanced cross-over design (CP1TT1 → CWI or CON → CP2TT2). Rectal temperature was measured immediately before and after both the constant-paced sessions …

The Use Of Border In Colour 2d Barcode, Siong Ong, Douglas Chai, Keng T. Tan

Research outputs pre 2011

In recent years, a trend has emerged in the use of colour to increase the data capacity of the 2D barcode. However the decoding of such colour barcode can be challenging in a mobile environment due to blurring effect that is commonly found in images captured by camera mobile phone. Blurring affects the synchronisation between the cells. It also causes the colour value of the cell to be wrongly interpreted. Hence, this paper proposes the use of border to improve the synchronisation and decoding. Three different types of border and the choice of its width will be investigated.

Development Of A Novel Finder Pattern For Effective Color 2d-Barcode Detection, Hiroko Kato, Keng T. Tan, Douglas Chai

Research outputs pre 2011

With a camera mobile phone, which has become a "must-have" device, 2D-barcode works as an interface to bridge the physical and digital world. As the notion of ubiquitous computing has permeated, developing a new 2D-barcode and its applications has been a growing trend worldwide. A 2D-barcode symbol consists of two broad areas: data area and guide area. The components of the latter is collectively called "finder pattern" and used in locating the 2D-barcode symbol. The failure of finding the target symbol prevents a barcode reader from successfully decoding the barcode. Hence, designing a functional finder pattern is one of the …

Novel Magnetic Photonic Crystal Structures For Magnetic Field Sensors And Visualizers, Mikhail Vasiliev, Viatcheslav A. Kotov, Kamal E. Alameh, Vladimir I. Belotelov, Anatoly K. Zvezdin

Research outputs pre 2011

Optimized one-dimensional (1-D) magnetophotonic crystals greatly increase the sensitivity of magnetooptical sensors, which are widely used in magnetooptical imaging to observe the magnetic domain patterns in magnetic materials, to observe the vortex states in superconductors, to detect small bits in magnetooptical recording media, to visualize defects in ferromagnetic objects, and to measure the value and spatial distribution of stray magnetic fields. This paper examines the properties of such devices operating in the optimized reflection (doubled Faraday rotation) mode and discusses the use of 1-D magnetophotonic crystals as sensors.

Magnetic Field Sensors And Visualizers Using Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov

Research outputs pre 2011

Magneto-optical imaging is widely used to observe the domain patterns in magnetic materials, visualize defects in ferromagnetic objects, and measure the spatial distribution of stray magnetic fields. Optimized 1D magneto-photonic crystals enable a significant increase in the sensitivity of magneto-optical sensors. The properties of such devices based on the optimized reflection (doubled Faraday rotation) mode and the use of 1D magnetic photonic crystals as sensors are discussed. Experimental results of the fabrication and characterization of ferrite-garnet layers possessing uniaxial magnetic anisotropy are shown, and an optimized film structure suitable for magneto-optical imaging is proposed.

Photonic Nano-Structures For Water Quality Monitoring, Mikhail Vasiliev, Kamal Alameh

Research outputs pre 2011

We propose a new type of sensors suitable for water quality testing and for monitoring water contamination levels in domestic, industrial and environmental applications. The proposed sensing scheme uses Fourier transform cavity-enhanced absorption spectroscopy and novel compact sensing elements based on nanostructured photonic crystal-type optical coatings enabling the sensitive Fourier-domain processing methodology and maximising the absorption path length within the measurement system. The measurement scheme is shown to be suitable for the determination of small changes in the water absorption coefficients at a discrete set of wavelengths in the visible spectral region in response to small concentrations of pollutants with …

Doped Iron Garnet Materials For Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov

Research outputs pre 2011

We have established a set of technologies for the deposition and annealing of magneto-optic garnets for use in photonic crystals. Devices for sensing magnetic fields and polarisation control using reconfigurable photonic crystals are being developed.

Microstructured Arrayed Microfluidic Waveguide Structure For Infrared Radiation Focusing And Transfer, Paul B. Laursen, Kamal Alameh, Mikhail Vasiliev, Nicholas C. Elliott

Research outputs pre 2011

A microstructured arrayed microfluidic waveguide structure for infrared radiation focussing and transfer is proposed and demonstrated. The arrayed waveguide structure comprises Masterbond UV-curable epoxy UV15 optimised using ZEMAX optical design software to achieve high efficiency of heat capture through far-infrared light focussing and subsequent absorption of the radiation on a centralised fluid medium. A high degree of alignment of the precision-positioned fluidic microchannels with the symmetry axes and the focal plane locations of the cylindrical microlens array is demonstrated, which maximises the efficiency of absorption of the incident IR light energy within the moving fluid. Observation of ink flows through …

Double Boundary Trench Isolation Effects On A Stacked Gradient Homojunction Photodiode Array, Paul V. Jansz, Steven Hinckley

Research outputs pre 2011

The effect of the width of inter-pixel double boundary trench isolation on the response resolution of a two dimensional CMOS compatible stacked gradient homojunction photodiode array was simulated. Insulation and P-doped double boundary trench isolation were compared. Both geometries showed improved crosstalk suppression and enhanced sensitivity compared to photodiode geometries previously investigated, combined with a reduction in fabrication complexity for the insulation DBTI configuration.

A Holistic Approach To Establishing An Effective Learning Environment For Psychology, Lynne Cohen, Paul Chang, Julie Ann Pooley, Lisbeth Pike

Research outputs pre 2011

The impetus for the Enhancing Quality and Learning (EQUAL) programme evolved out of concerns held by the staff in the School of Psychology at Edith Cowan University (ECU) regarding the difficulties encountered by first year psychology students and the subsequent low retention rate of these students in the psychology course. The EQUAL programme focused on easing the transition of high school students into university studies by enhancing the social support networks of commencing students. The programme was designed to be an holistic approach to enhancing a sense of belonging to the School of Psychology and comprised seven components. These are …

"We Are Next!": Listening To Jewish Voices In A Multicultural Country, Lelia Rosalind Green, Gerry Bloustien, Mark Balnaves

Research outputs pre 2011

If the notion of being at home in one’s country is safe and reassuring, the homeland and the heartland of what we judge important, then the thought that a countryneeds its own homeland security is destined to create a sense of unease. Australia’s homeland security unit was set up in May 2003 (Riley), just weeks after theallies’ Coalition of the Willing had celebrated George W Bush’s declaration aboard the USS Abraham Lincoln, of ‘Victory in Iraq’ (BBC). It might have been expected, inthis victorious glow, that the country would feel confidently able to return to a state of security. Apparently …

Acousto-Ultrasonic Optical Fiber Sensors: Overview And State-Of-The-Art, Graham Wild, Steven Hinckley

Research outputs pre 2011

This paper gives a review of acoustic and ultrasonic optical fiber sensors (OFSs). The review covers optical fiber sensing methods for detecting dynamic strain signals, including general sound and acoustic signals, high-frequency signals, i.e., ultrasonic/ultrasound, and other signals such as acoustic em

A Micro-Photonic Stationary Optical Delay Line For Fibre Optic Time Domain Oct, Paul V. Jansz, Graham Wild, Steven Hinckley

Research outputs pre 2011

We present results for the characterisation of a micro-photonic stationary optical delay line. The delay line is intended to generate true time delays for a fibre optic based optical coherence tomography system.

An Intensiometric Detection System For Fibre Bragg Grating Sensors, Graham Wild, Steven Hinckley

Research outputs pre 2011

We present an intensiometric detection system for fibre Bragg grating sensors. The system is designed to directly detect intensity modulated signals, or to convert spectrally modulated signals into intensity modulated signals.

Crude Birth Rates And Contraceptive Use By Racial/Ethnic Group In The U.S., 1990-2000, Victoria Stone

Center for Latin American, Caribbean, and Latino Studies

Introduction: This report analyzes crude birth rates and contraceptive use among women in the three primary racial/ethnic groups, White, Black, and Latina, and further examines birth rates by age-specific groups in the United States between 1990 and 2000.

Methods: The data examined here was derived from the NYC Vital Statistics 2002 Report and the Census 2000 SF4 table on Sex by Age by race and Latino nationality. The birth rates were calculated by dividing live birth numbers (Vital Statistics report) by total population count by age and racial/ethnic group (Census 2000 data) and multiplying this number by 1000.

Results: In …

Constitution 1975 (Rev. 2008), Government Of Greece

Documents

No abstract provided.

Systemic Problems In Information Technology Adoption And Use: A Systems Thinking Perspective, Syed Arshad Raza, Craig Standing

Research outputs pre 2011

Understanding and creating the conditions under which information systems will be embraced by human organizations (thinking systems) remain a high-priority research issue. Despite numerous benefits associated with Information Technology (IT), there exist some intervening factors (systemic problems or issues) that impede technology’s widespread adoption and use in organisations. Established information technology adoption models like TAM, TRA etc. view technology adoption from the users’ perspective without taking a strategic perspective into account. As an alternative focus we suggest that addressing systemic problems can be a method of reducing fundamental barriers to organizational progress. This paper presents some real life examples of …

Association Of Alleles Carried At Tnfa -850 And Bat1 -22 With Alzheimer's Disease, Anastazija Gnjec, Katarzyna D'Costa, Simon Laws, Ross Hedley, Kelvin Balakrishnan, Kevin Taddei, Georgia Martins, Athena Paton, Giuseppe Verdile, Samuel Gandy, Anthony Broe, William Brooks, Hayley Bennett, Olivier Piguet, Patricia Price, Judith Miklossy, Joachim Hallmayer, Patrick Mcgeer, Ralph Martins

Research outputs pre 2011

Background: Inflammatory changes are a prominent feature of brains affected by Alzheimer's disease (AD). Activated glial cells release inflammatory cytokines which modulate the neurodegenerative process. These cytokines are encoded by genes representing several interleukins and TNFA, which are associated with AD. The gene coding for HLA-B associated transcript 1 (BAT1) lies adjacent to TNFA in the central major histocompatibility complex (MHC). BAT1, a member of the DEAD-box family of RNA helicases, appears to regulate the production of inflammatory cytokines associated with AD pathology. In the current study TNFA and BAT1 promoter polymorphisms were analysed in AD and control cases and …

Tunable True-Time Delay Unit Based On Opto-Vlsi Processing, Feng Xiao, Budi Juswardy, Kamal Alameh

Research outputs pre 2011

A novel tunable true-time delay unit is proposed and demonstrated. The unit is based on the use of an Opto-VLSI processor that dynamically selects a single waveband or multiple wavebands from an RF-modulated broadband optical signal and routes them to a high-dispersion fiber for arbitrary time delay synthesis. Experimental results demonstrate continuously tunable time delay of up to 4 ns.

Obstacle Detection And Spectral Discrimination Using Multi-Wavelength Motionless Wide Angle Laser Scanning, Kaveh Sahba, Kamal Alameh, Clifton Smith

Research outputs pre 2011

Static laser scanning over a wide angle is demonstrated by ranging to 20 laser beams generated by a novel cylindrical quasi-cavity waveguide, using laser triangulation. Baseline distances and outgoing angles unique to each laser beam are calculated by modelling the triangulation arrangement using a system of linear equations and plotting principal rays. The quasi-cavity waveguide, imaging lens and focal plane are also plotted. The system is calibrated by finding optimal values for uncertain instrumental parameters using constrained non-linear optimization. Distances calculated over 5m indoors result in accuracies above 93%. Discrete laser spectroscopy using 640nm and 785nm laser diodes is also …

A Tunable Multiwavelength Laser Employing A Semiconductor Optical Amplifier And An Opto-Vlsi Processor, Muhsen Aljada, Kamal Alameh, Yong T. Lee

Research outputs pre 2011

We propose and experimentally demonstrate a stable tunable multiwavelength laser employing a semiconductor optical amplifier (SOA) in conjunction with an opto-very-large-scale-integration (VLSI) processor. By uploading digital phase holograms onto the opto-VLSI processor, the amplified spontaneous emission of the SOA is arbitrarily sliced and injected back into the SOA to generate multiple lasing wavelengths with a linewidth of 0.5 nm. Experimental results demonstrate a tunable multiwavelength laser with a tuning range from 1528 to 1533 nm with power fluctuations of less than 0.5 dB.

Current Challenges Facing Information And Communications Technology: A Manifesto For Change, Donald Mcdermid

Research outputs pre 2011

A distinction is drawn concerning the true nature of Information and Communications Technology (ICT) which previously was seen as technology-focused or techno centric but actually concerns transformation and the management of change in business (socio-techno centric). Current issues and challenges in ICT are examined and future trends and directions highlighted. This leads to a manifesto for change outlining a coherent approach to transforming ICT into a resource which fully contributes to business. Finally given this manifesto, challenges for tertiary education are outlined.

Evaluation Of An Optical Image Sensor For Use In The Microphotonic Real-Time Vegetation Discrimination System, Arie Paap, Sreten Askraba, Kamal Alameh, John Rowe

Research outputs pre 2011

A comparison between the performance of a commercially available line scan camera and a linear sensor array employed in a micro-photonic real-time vegetation discrimination system for use in selective herbicide spraying systems is presented.

A Type Of Variation Of Hamilton Path Problem With Applications, Jitian Xiao, Jun Wang

Research outputs pre 2011

This paper describes a type of variation of the Hamilton path problem that can be applied to a type of applications. Unlike the original Hamilton path problem, the variation always has a solution. The problem of finding solutions to the variation of the Hamilton path problem is NP-complete. A heuristic for finding solutions to the problem is developed and analyzed. The heuristic is then applied to a real application scenario in the area of spatial cluster scheduling in spatial join processing. Experiments have demonstrated that the proposed method generates better cluster sequence than existing algorithms.

Men Of Steel Or Plastic Cops: The Use Of Ethnography As A Transformative Agent, Christine Teague, David Leith

Research outputs pre 2011

The Perth urban rail system, like many other rail systems in Australia and overseas, is subject to crime and anti-social behaviour around the railway environs from a small minority of the travelling public. The transit officers, who form part of the security section of the Public Transport Authority, are the people employed to deal with these incidents, which can result in transit officers being injured. To fully understand the violence and antisocial behaviour that they deal with on a regular basis and develop strategies to reduce this risk of injury, it was necessary to enter their world. The researcher in …

Photonic-Based Spectral Reflectance Sensor For Ground-Based Plant Detection And Weed Discrimination, Arie Paap, Sreten Askraba, Kamal Alameh, John Rowe

Research outputs pre 2011

A bench prototype photonic-based spectral reflectance sensor architecture for use in selective herbicide spraying systems performing non-contact spectral reflectance measurements of plants and soil is described and experimental data obtained with simulated farming vehicle traveling speeds of 7 and 22 km/h is presented. The sensor uses a three-wavelength laser diode module that sequentially emits identically-polarized laser light beams through a common aperture, along one optical path. Each laser beam enters a multi-spot beam generator which produces up to 14 parallel laser beams over a 210mm span. The intensity of the reflected light from each spot is detected by a high-speed …

Opto-Vlsi Based Broadband Reconfigurable Optical Add-Drop Multiplexer, Feng Xiao, Budi Juswardy, Kamal Alameh

Research outputs pre 2011

In this paper, a reconfigurable optical add/drop multiplexer (ROADM) structure using an Opto-VLSI processor, two arrayed waveguide grating de/multiplexers (AWGs) and a custom-made fiber array is described. The fiber array consist of N pairs of upper and lower fibers, where each pair could function as an add, a drop or a thru multiplexers depending on the hologram generated by the Opto-VLSI processor. Experimental results show that the proposed ROADM structure has an average insertion loss of 5.5 dB for all the functions and a uniformity of 0.3 dB over a wide wavelength range from 1524 nm to 1576 nm. A …

Opto-Vlsi-Based Reconfigurable Microwave Photonic Transversal Filter With Positive And Negative Coefficients, Feng Xiao, Budi Juswardy, Kamal Alameh

Research outputs pre 2011

A novel reconfigurable microwave photonic filter structure with positive and negative coefficients is proposed and demonstrated. The filter structure comprises two arrayed waveguide gratings, a custom-made fiber array, high-dispersion fibres, and a reconfigurable opto-VLSI processor. Positive and negative filter weights can flexibly be synthesised to realise arbitrary transfer functions. Experimental results are presented, which demonstrate the principle of the proposed filter structure.

You've Got Mail: Accountability And End User Attitudes To Email Management, Mark Brogan, Susan Vreugdenburg

Research outputs pre 2011

In a pioneering ethnographic study of end user responses to the problem of ‘information overload’ Whittaker and Sidner (1996) found that the design of systems primarily as methods of asynchronous communication, posed significant information management problems for users. In another contemporaneous study, David Bearman (1993) extended understanding of the implications of end user email management behavior by identifying significant accountability implications for organizations arising from the use of email. Recent case studies in the United States and Australia (Leopold, 2008; Raleigh Chronicle, 2008; Strutt, and Taylor, 2007) have once again focused attention on the accountability consequences for Government of email …

Reconfigurable Multi-Passband Optical Filter Using Opto-Vlsi Processor, Muhsen Aljada, Kamal Alameh

Research outputs pre 2011

A reconfigurable multi-passband optical filter of 0.5 nm linewidth and a tuning range of 8 nm is demonstrated using an opto-VLSI processor. The wavelength tunability is performed using digital phase holograms uploaded on the opto-VLSI processor.