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Progress In Piezoelectric Material Based Oceanic Wave Energy Conversion Technology, Mahbubur Kiran, Omar Farrok, Md Abdullah-Al-Mamun, Md Rabiul Islam, Wei Xu
Progress In Piezoelectric Material Based Oceanic Wave Energy Conversion Technology, Mahbubur Kiran, Omar Farrok, Md Abdullah-Al-Mamun, Md Rabiul Islam, Wei Xu
Faculty of Engineering and Information Sciences - Papers: Part B
Recently, electrical engineers are paying great attention to develop oceanic wave energy conversion technologies based on the piezoelectric materials because of their excellent conveniences. Piezoelectric oceanic wave energy converters (OWECs) have several benefits over the others such as its small size, lightweight, no requirement of using intermediate device as well as having less negative impacts on the oceanic environment. Various review and research papers focus on the piezoelectric devices, their operation and application for oceanic energy conversion. But, to the best of the authors’ knowledge, none of the existing research or review papers present detailed scheme of piezoelectric device based …
Increase In Volumetric Electrical Power Density Of A Linear Generator By Winding Optimization For Wave Energy Extraction, Selim Molla, Omar Farrok, Abidur Rahman, Md Samiul Bashir, Md Rabiul Islam, Abbas Z. Zouzani, M. A Parvez Mahmud
Increase In Volumetric Electrical Power Density Of A Linear Generator By Winding Optimization For Wave Energy Extraction, Selim Molla, Omar Farrok, Abidur Rahman, Md Samiul Bashir, Md Rabiul Islam, Abbas Z. Zouzani, M. A Parvez Mahmud
Faculty of Engineering and Information Sciences - Papers: Part B
In this article, a method of winding optimization of the linear generator is proposed to increase the electrical power generation from the oceanic wave. A linear generator is designed in the ANSYS/Maxwell environment to analyze the proposed winding optimization method. The electrical and magnetic properties of the generator are extensively analyzed. The cross-sectional area and the number of turns of the copper conductor are optimized to maximize the output power. Load characteristics are also considered for different conductor sizes and turn numbers to determine a suitable operating point. A cooling system is also incorporated in the optimized linear generator to …
Recent Progress In Electrical Generators For Oceanic Wave Energy Conversion, Abidur Rahman, Omar Farrok, Md Rabiul Islam, Wei Xu
Recent Progress In Electrical Generators For Oceanic Wave Energy Conversion, Abidur Rahman, Omar Farrok, Md Rabiul Islam, Wei Xu
Faculty of Engineering and Information Sciences - Papers: Part B
Oceanic wave energy extraction through electrical generator is one of the most interesting topics in the field of power engineering. Almost all the existing relevant review paper focus on electrical generator with the working principle of electromagnetic induction or piezoelectric or triboelectric effect. In this paper, all the existing types (based on principle of operation) of electrical generator used for wave power harvesting are discussed. This paper not only covers recent progress in electrical power generation by electro-magnetic induction, piezoelectric generator, and electrostatic induction, but also presents critical comparative review as well where suitable use and weakness of each type …
Design And Optimization Of A Novel Dual-Port Linear Generator For Oceanic Wave Energy Conversion, Omar Farrok, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto, Jianguo Zhu
Design And Optimization Of A Novel Dual-Port Linear Generator For Oceanic Wave Energy Conversion, Omar Farrok, Md Rabiul Islam, Kashem M. Muttaqi, Danny Sutanto, Jianguo Zhu
Faculty of Engineering and Information Sciences - Papers: Part B
All the existing linear generators used for oceanic wave energy conversions are basically a single-port linear electrical generators (SPLEGs). The conventional SPLEG transfers electrical power to the load/grid discontinuously due to its working principle and the intermittent nature of oceanic waves. This paper proposes a new dual-port linear electrical generator (DPLEG) topology, which is capable to transfer electrical power with an adequate voltage even at zero vertical velocity of the oceanic wave. The analysis shows that the efficiency and the performance of the DPLEG depend greatly on the stator tooth design. For this reason, the proposed DPLEG is optimized using …
Analog Least Mean Square Loop For Self-Interference Cancellation In Generalized Continuous Wave Sar, Anh Tuyen Le, Yijiang Nan, Le Chung Tran, Xiaojing Huang, Y J. Guo, J (Yiannis) Vardaxoglou
Analog Least Mean Square Loop For Self-Interference Cancellation In Generalized Continuous Wave Sar, Anh Tuyen Le, Yijiang Nan, Le Chung Tran, Xiaojing Huang, Y J. Guo, J (Yiannis) Vardaxoglou
Faculty of Engineering and Information Sciences - Papers: Part B
Generalized continuous wave synthetic aperture radar (GCW-SAR) is a promising new imaging radar system since it applies the full-duplex (FD) transmission technique to achieve continuous signaling in order to overcome several fundamental limitations of the conventional pulsed SARs. As in any FD wireless communication system, self-interference (SI) is also a key problem which can impact on the GCW-SAR system. In this paper, the analog least mean square (ALMS) loop in the radio frequency domain is adopted to cancel the SI for a GCW-SAR system with periodic chirp signaling. The average residual SI power after the ALMS loop is analyzed theoretically …
Vertical Whiteboarding: Riding The Wave Of Student Activity In A Mathematics Classroom, Patricia A. Forrester, Carolyn Mcphail, Suellen L. Denny
Vertical Whiteboarding: Riding The Wave Of Student Activity In A Mathematics Classroom, Patricia A. Forrester, Carolyn Mcphail, Suellen L. Denny
Faculty of Social Sciences - Papers (Archive)
In 2014 we commenced working on the Inspiring Mathematics and Science in Teacher Education (IMSITE) project, aimed at improving mathematics and science education in Australia by improving the recruitment, development and retention of mathematics and science teachers. In this project we undertook a range of activities, the most exciting of which was the introduction of whiteboarding as a tool to actively engage high school students with mathematics.
Burnout And The Work-Family Interface: A Two-Wave Study Of Sole And Partnered Working Mothers, Laura D. Robinson, Christopher Magee, Peter Caputi
Burnout And The Work-Family Interface: A Two-Wave Study Of Sole And Partnered Working Mothers, Laura D. Robinson, Christopher Magee, Peter Caputi
Faculty of Social Sciences - Papers (Archive)
Purpose - The purpose of this paper is to examine whether work-to-family conflict (WFC) and work-to-family enrichment (WFE) predicted burnout in working mothers using conservation of resources theory. The authors also examined whether these relationships varied between sole and partnered working mothers. Design/methodology/approach - In total, 516 partnered and 107 sole mothers in paid employment completed an online survey twice, six months apart. Findings - WFC was significantly positively related to burnout, and WFE significantly negatively related to burnout. Marital status moderated the inverse relationship between WFE and personal burnout, and this relationship was significant for partnered mothers only. Research …
Analysis Of The Oceanic Wave Dynamics For Generation Of Electrical Energy Using A Linear Generator, Omar Farrok, Md Rabiul Islam, Md Rafiqul Islam Sheikh
Analysis Of The Oceanic Wave Dynamics For Generation Of Electrical Energy Using A Linear Generator, Omar Farrok, Md Rabiul Islam, Md Rafiqul Islam Sheikh
Faculty of Engineering and Information Sciences - Papers: Part B
Electricity generation from oceanic wave depends on the wave dynamics and the behavior of the ocean. In this paper, a permanent magnet linear generator (PMLG) has been designed and analyzed for oceanic wave energy conversion. The proposed PMLG design is suitable for the point absorber type wave energy device. A mathematical model of ocean wave is presented to observe the output characteristics and performance of the PMLG with the variation of ocean waves. The generated voltage, current, power, applied force, magnetic flux linkage, and force components of the proposed PMLG have been presented for different sea wave conditions. The commercially …
Oscillating Water Column Wave Energy Conversion Device Response Spectra, Brad Stappenbelt
Oscillating Water Column Wave Energy Conversion Device Response Spectra, Brad Stappenbelt
Faculty of Engineering and Information Sciences - Papers: Part A
The objective of the present work is to serve as a practical addendum to the discrete parameter Oscillating Water Column (OWC) Wave Energy Conversion (WEC) device model proposed by Folley and Whittaker [1] at the 24th International Conference on Offshore Mechanics and Arctic Engineering. In particular, a method for the interpretation of their discrete parameter model is presented, consisting of a translation from the tuning and air compressibility parameter map reported to a response spectrum representation. In this more commonly encountered form the model is more readily physically interpreted for design and analysis application.
Exact Travelling Wave Solutions Of A Variety Of Boussinesq-Like Equations, Jonu Lee, Rathinasamy Sakthivel
Exact Travelling Wave Solutions Of A Variety Of Boussinesq-Like Equations, Jonu Lee, Rathinasamy Sakthivel
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, we obtain exact traveling wave solutions of a variety of Boussinesq-like equations by using two distinct methods with symbolic computation. The Boussinesq equations play an important role in physical applications, such as in nonlinear lattice waves, acoustic waves, iron sound waves in a plasma, and vibrations in a nonlinear string. More precisely, the modified tanh-coth method is employed to obtain single soliton solutions, and the extended Jacobi elliptic function method is applied to derive doubly periodic wave solutions. Further, it is shown that soliton solutions and triangular solutions can be established as the limits of the Jacobi …
A Geospatial Assessment Of The Relationship Between Reef Flat Community Calcium Carbonate Production And Wave Energy, S M. Hamylton, A Pescud, J X. Leon, D Callaghan
A Geospatial Assessment Of The Relationship Between Reef Flat Community Calcium Carbonate Production And Wave Energy, S M. Hamylton, A Pescud, J X. Leon, D Callaghan
Faculty of Science, Medicine and Health - Papers: part A
The ability of benthic communities inhabiting coral reefs to produce calcium carbonate underpins the development of reef platforms and associated sedimentary landforms, as well as the fixation of inorganic carbon and buffering of diurnal pH fluctuations in ocean surface waters. Quantification of the relationship between reef flat community calcium carbonate production and wave energy provides an empirical basis for understanding and managing this functionally important process. This study employs geospatial techniques across the reef platform at Lizard Island, Great Barrier Reef, to (1) map the distribution and estimate the total magnitude of reef community carbonate production and (2) empirically ascertain …
Exact Travelling Wave Solutions For Some Important Nonlinear Physical Models, Jonu Lee, Rathinasamy Sakthivel
Exact Travelling Wave Solutions For Some Important Nonlinear Physical Models, Jonu Lee, Rathinasamy Sakthivel
Faculty of Engineering and Information Sciences - Papers: Part A
The two-dimensional nonlinear physical models and coupled nonlinear systems such as Maccari equations, Higgs equations and Schrodinger-KdV equations have been widely applied in many branches of physics. So, finding exact travelling wave solutions of such equations are very helpful in the theories and numerical studies. In this paper, the Kudryashov method is used to seek exact travelling wave solutions of such physical models. Further, three-dimensional plots of some of the solutions are also given to visualize the dynamics of the equations. The results reveal that the method is a very effective and powerful tool for solving nonlinear partial differential equations …
Optical Vortex Solitary Wave In Bounded Nematic-Liquid-Crystal Cell, Antonmaria A. Minzoni, Luke W. Sciberras, Noel F. Smyth, Annette L. Worthy
Optical Vortex Solitary Wave In Bounded Nematic-Liquid-Crystal Cell, Antonmaria A. Minzoni, Luke W. Sciberras, Noel F. Smyth, Annette L. Worthy
Faculty of Engineering and Information Sciences - Papers: Part A
Modulation theory, based on a Lagrangian formulation of the governing equations, is used to investigate the propagation of a nonlinear, nonlocal optical vortex solitary wave in a finite nematic-liquid-crystal cell. The nematic response to the vortex is calculated using the approach of themethod of images (MOI). It is demonstrated that the MOI is a reliable alternative to the usual Fourier series solution as it requires an order of magnitude fewer terms to obtain excellent agreement with numerical solutions. It is found that the cell walls, in addition to repelling the optical vortex solitary wave, as for an optical solitary wave, …
Tolkien’S Japonisme: Prints, Dragons, And A Great Wave, Michael Organ
Tolkien’S Japonisme: Prints, Dragons, And A Great Wave, Michael Organ
Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers
The original September 1937 George Allen & Unwin edition of The Hobbit features artwork by J.R.R. Tolkien along with an accompanying dust jacket. This latter work is a modern, stylized graphic design composed of a not entirely symmetrical view of a Middle-earth landscape (night to the left, day to the right), with the Lonely Mountain rising in the distant center, flanked by steeply sloped, snow-covered Misty Mountains and in the foreground Mirkwood’s dense, impenetrable forests. Additional features include a crescent moon, the sun, a dragon, eagles, a lake village, and a rapier-like path—a straight road— heading toward a darkened, megalithic …
Riding The Wave Or Paddling In The Shallows? Understanding Older Australians' Use Of The Internet, Pippa Burns, Sandra C. Jones, Don Iverson, Peter Caputi
Riding The Wave Or Paddling In The Shallows? Understanding Older Australians' Use Of The Internet, Pippa Burns, Sandra C. Jones, Don Iverson, Peter Caputi
Faculty of Health and Behavioural Sciences - Papers (Archive)
Issues addressed: Australia's ageing population is set to become an increasing burden on an already over-stretched primary health care system. Potential strategies to alleviate this pressure need to be investigated. Increased knowledge of older Australians? use of the internet would allow the appropriateness of online health intervention to be assessed. This initial, exploratory study examined the proportion of people aged 55 years and older who accessed the internet. It investigated their duration of use, level of comfort, use of the internet to seek health information and perceived reliability of information found on the internet. Methods: A paper based survey was …
Terahertz-Wave Parametic Oscillator With Misalignment-Resistant Tuning Cavity, Bo Sun, Sanxing Li, Jinsong Liu, Enbang Li, Jianquan Yao
Terahertz-Wave Parametic Oscillator With Misalignment-Resistant Tuning Cavity, Bo Sun, Sanxing Li, Jinsong Liu, Enbang Li, Jianquan Yao
Faculty of Engineering and Information Sciences - Papers: Part A
We demonstrate a terahertz-wave parametric oscillator (TPO) with a corner-cube resonator consisting of a corner-cube prism (CCP) and a flat mirror. By using the cavity configuration proposed in this Letter, the generation of tunable monochromatic terahertz (THz) waves can be achieved just by rotating the flat mirror instead of rotating the TPO cavity relative to the pump beam. The THz-wave output intensity and pulse width can be controlled periodically by rotating the CCP around the cavity axis. The TPO stability against cavity misalignment is significantly improved by at least 1 to 2 orders of magnitude compared with the conventional plane–parallel …
Cultural Flows Beneath Death Note: Catching The Wave Of Popular Japanese Culture In China, Peter Goderie, Brian M. Yecies
Cultural Flows Beneath Death Note: Catching The Wave Of Popular Japanese Culture In China, Peter Goderie, Brian M. Yecies
Faculty of Arts - Papers (Archive)
The government of the People’s Republic of China has often been criticized for its policies regarding freedom of expression. Cinema in China has been central to this criticism, particularly with respect to the distribution of foreign films. This article uses a case study of the Japanese film Death Note (Kaneko Shūsuke, 2006) to advance current understanding of Chinese cinema found in important studies such as Chu (2002), Zhang (2004) and Berry and Farquhar (2006). To better understand the controversy surrounding Death Note in the Chinese context, this article explores the historical precursors to the Chinese Communist Party’s ban on horror …
Gremo: A Gis-Based Generic Model For Estimating Relative Wave Exposure, Austen Pepper, Marjetta L. Puotinen
Gremo: A Gis-Based Generic Model For Estimating Relative Wave Exposure, Austen Pepper, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
Wave exposure plays a major role in shaping the ecological structure of nearshore communities, with different community types able to survive and/or thrive when typically exposed to different levels of wave energy. This can be quantified by taking direct field measurements with wave buoys over time and then manipulating the data to derive typical conditions. However, taking these measurements is only feasible for very limited areas due to logistical constraints, and generating them with numerical wave models can also be expensive to run and may require data inputs that are either lacking or are highly uncertain. Instead, the relative differences …
A Method For Reducing Wave Based Teleoperator Reflections, L H. Bate, C D. Cook, Z Li
A Method For Reducing Wave Based Teleoperator Reflections, L H. Bate, C D. Cook, Z Li
Faculty of Engineering and Information Sciences - Papers: Part A
Wave variables guarantee stability for delayed teleoperation. They also introduce reflections which can prove very disorientating for an operator. This paper presents a new method for reducing the wave reflections when operating in nonlinear and unknown environments. Simulations and laboratory experiments shows the new method does not only guarantee stability but also reduce wave reflections allowing for improved velocity tracking and force feedback.
Nearshore Wave Environments Around A Sandy Cay On A Platform Reef, Torres Strait, Australia, Colin D. Woodroffe, Bongkoch Samosorn
Nearshore Wave Environments Around A Sandy Cay On A Platform Reef, Torres Strait, Australia, Colin D. Woodroffe, Bongkoch Samosorn
Faculty of Science - Papers (Archive)
Waves are the primary factor affecting reef-island morphology. This study examines spatial and temporal variations of wave characteristics in the nearshore around Warraber Island, a sandy cay on a platform reef in Torres Strait Australia, based on field measurements during the predominant southeasterly wind season. Water pressure was recorded simultaneously, and transformed to water surface wave spectra, at a location close to the reef edge and across the nearshore at different locations around the island. Wave environments off the reef were estimated based on wave characteristics measured at the reef-edge location and found to be primarily dominated by sea. Low …
Personality And Religious Values Among Adolescents: A Three-Wave Longitudinal Analysis., Patrick C. Heaven, Joseph V. Ciarrochi
Personality And Religious Values Among Adolescents: A Three-Wave Longitudinal Analysis., Patrick C. Heaven, Joseph V. Ciarrochi
Faculty of Health and Behavioural Sciences - Papers (Archive)
Using three waves of data, we assessed the relationships between endorsement of religious values, some of the major personality dimensions, and social and emotional well-being amongst teenagers. Participants were 784 high school students at Time 1 (382 manles and 394 females; 8 did not indicate their gender) and 563 provided data at each of Time 1, Time 2 and Time 3.
Classification Of Seagrass Habitat Structure As A Reponse To Wave Exposure At Etoile Cay, Seychelles, Sarah Hamylton, Tom Spencer
Classification Of Seagrass Habitat Structure As A Reponse To Wave Exposure At Etoile Cay, Seychelles, Sarah Hamylton, Tom Spencer
Faculty of Science - Papers (Archive)
Physical processes are thought to be a critical control on shallow water communities in the tropics. Past studies of seagrass community patterns have tended to be qualitative and failed to empirically link observed structures with the processes that govern them. Remote sensing technology, in the form of imagery acquired using a Compact Airborne Spectrographic Imager (CASI), has been used to construct a habitat map of seagrass communities at Etoile Cay, Amirantes, Seychelles. . A sim-ple definition of seagrass habitat structure, incorporating measures of complexity and heterogene-ity, has been investigated along a wave exposure gradient via moving window analysis over the …
The Geomorphological Evolution Of A Wave-Dominated Barrier Estuary: Burrill Lake, New South Wales, Australia, Brian G. Jones, Craig R. Sloss, David M. Price, C.E. Mcclennen, John De Carli
The Geomorphological Evolution Of A Wave-Dominated Barrier Estuary: Burrill Lake, New South Wales, Australia, Brian G. Jones, Craig R. Sloss, David M. Price, C.E. Mcclennen, John De Carli
Faculty of Science - Papers (Archive)
The geomorphological evolution of the Holocene wave-dominated barrier estuary at Burrill Lake on the New South Wales coast, Australia, has been delineated using a combination of seismic stratigraphy and the lithostratigraphic analysis of vibracores collected from the back-barrier estuarine environment. A combination of radiocarbon and aspartic acid racemisation-derived ages obtained on Holocene fossil molluscs, and the thermoluminescent signal in remnant Last Interglacial barrier sediments provides the chronological framework for this investigation. Results from this paper show that the barrier estuary occupies a relatively narrow (<1.5 km wide) and shallow (<40 m deep) incised bedrock valley formed during sea-level lowstands. Late Pleistocene sedimentary successions and remnants of the Last Interglacial barrier have been preserved within the incised valley axis and the mouth of the incised valley. These sediments, deposited during the Last Interglacial sea-level highstand, have subsequently been partially removed during the last glacial maximum. Overlying the antecedent late Pleistocene landsurface is a near basin-wide basal marine sand deposited in response to rising sea level associated with the most recent post-glacial marine transgression, which inundated the shallow incised valley ca.7800 years ago. More open marine conditions, with a diverse assemblage of estuarine and marine mollusc species, persisted until ca. 4500 years ago when the stabilizing Holocene barrier resulted in the development of a lowenergy back-barrier lagoonal environment. A late Holocene 1-2 m regression of sea level ca. 3000 years ago further restricted oceanic circulation, increased the rate of fluvial bay-head delta progradation and the extension of the backbarrier central basin mud facies. This evolutionary model of barrier estuary evolution developed for Burrill Lake is consistent with recent research conducted in Lake Illawarra and St Georges Basin and can be applied to other estuaries that have formed in relatively shallow and narrow incised bedrock valleys on tectonically stable, wave-dominated coastlines.
An Automated Gis Method For Modeling Relative Wave Exposure Within Complex Reef-Island Systems: A Case Study Of The Great Barrier Reef, Marjetta L. Puotinen
An Automated Gis Method For Modeling Relative Wave Exposure Within Complex Reef-Island Systems: A Case Study Of The Great Barrier Reef, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
Patterns of wave energy play a significant role in shaping the long-term structure of coral reef communities worldwide. For example, sections of reefs have been shown to vary greatly in morphology (dominant size class, growth form) as coral colonies adapt in response to local-scale differences in the wave heights typically experienced. These differences result in zonation (crest, lagoon, and slope), producing characteristic growth forms and species assemblages that vary in their vulnerability to damage from waves (Done 1993). Those communities experiencing the greatest typical wave energy align themselves parallel to the water flow, adopt stream-lined forms and are usually smaller …
Hurray For Pusan And The Korean New Wave!, Brian M. Yecies, Aegyung Shim Yecies
Hurray For Pusan And The Korean New Wave!, Brian M. Yecies, Aegyung Shim Yecies
Faculty of Arts - Papers (Archive)
For nine days in November 2001 (9th-17th), the 6th Pusan International Film Festival (PIFF) rocked the seaside city of Pusan. A record 659 industry guests from 30 countries, 3100 official Korean guests, and more than a hundred thousand moviegoers filled the seats of 332 completely sold-out, or near sell-out screenings in 15 different theatres. Thousands and thousands of curious festival fans filled the small streets and alleyways in the Downtown-Nampodong festival area, enjoying the stars, lights, cameras, and all of the promotional PIFF booths and kiosks. A total of 126,613 paid tickets were sold to 201 films from 60 countries, …
Korean Post New Wave Film Director Series: Kim Ki-Duk, Brian M. Yecies, Aegyung Shim Yecies
Korean Post New Wave Film Director Series: Kim Ki-Duk, Brian M. Yecies, Aegyung Shim Yecies
Faculty of Arts - Papers (Archive)
Shortly after the release of his new film Bad Guy (Korea 2001), KIM Ki-Duk announced that he was not giving any more interviews. He took a vow of silence, because many of his critics had been criticizing him. I decided to ask him for an interview anyway. He accepted my invitation right away. I reviewed his website (www.kimkiduk.com), which includes my harsh criticism about his films, and I read his past interviews. There were 21 interviews and 37 reviews about his new film Bad Guy. I printed 184 articles written by his fans and harsh opponents and read them randomly.