Digital Commons Network^™

Mine Dewatering In Arid, Saline Environments In Western Australia: The Response Of Biota Emerging From Rehydrated Sediments, Charelle Harkins

Theses : Honours

Mine dewatering is a critical part of the mining process to prevent flooding of underground or open pits, to allow for the excavation of the available resources. Groundwater is abstracted from underground pits to the surface through extraction bores. The issue of where to discharge the excess water is a major concern. The use of natural wetlands is one option for mine water discharge. Saline lakes in arid areas are ideal receiving environments for discharge options, acting as evaporation facilities for the storage and disposal of excess mine water. Mine water discharge into ephemeral lake systems modifies the volume of …

Adequacy Of Terrestrial Fauna Surveys For The Preparation Of Environmental Impact Assessments In The Mining Industry Of Western Australia [Thesis], Jason L. Fraser

Theses : Honours

The Environmental protection Authority has indicated that terrestrial fauna surveys as undertaken for the purpose of preparing Environmental Impact Assessment (EIA) are not providing adequate information to enable decision-makers to assess development impacts on biodiversity and ecosystems. In the absence of a protocol to assess current standards of terrestrial fauna surveys, 'best practice' was defined through discussions held with an 'expert panel', and quantified through a questionnaire. This study examined current standards of terrestrial vertebrate fauna surveys, prepared for the purpose of EIA, with 'best practice' as defined by relevant expert opinion. Strengths and weaknesses of terrestrial fauna surveys were …

The Effect Of The Moon Phase On The Daily Catch Rate Of King, Tiger And Endeavour Prawns In The Shark Bay And Exmouth Gulf Fisheries, Tenniel Harman

Theses : Honours

Two of the major commercial prawn fisheries in Western Australia arc located in Exmouth Gulf and Shark Bay. Prawn fishing is the third most valuable fishing industry in WA, producing an annual income of $62 million. These two fishing regions are considered fully exploited (Fisheries WA Home Page) and careful management is needed to produce and maintain them as sustainable fisheries. The Western Australian Marine Research Laboratories have developed detailed computer models which estimate the stock abundance of the prawn fisheries. This provides information on what sort of restrictions should be made to maintain a stainable fishery. The impact of …

Video Compression Using Wavelets And Hierarchical Motion Estimation, Andrew Peter Byrne

Theses : Honours

This thesis investigates the benefits and the significant compression that can be obtained from data that has been decomposed using a wavelet transform. A video compression algorithm was developed that employs the wavelet transform and a hierarchical motion estimation algorithm which itself utilises benefits of the wavelet transform. Using MATLAB, a popular software tool for matrix based computation and analysis, several functions were developed which together formed the video compression algorithm. A variety of tests were conducted on a sample video sequence to ascertain the strengths and weaknesses of the techniques employed. The results, although not the same as the …

Indoor Radio Channel Of Bluetooth Technology, Kai Hock Charlie Khoo

Theses : Honours

This thesis discusses the findings of the final year project involving the characterisation of indoor radio channel specified by Bluetooth technology through theoretical analysis, simulations and actual measurements through field experiments. The concepts of indoor radio propagation effects and its statistical models arc explored. In addition, Bluetooth specifications are also studied and presented in Section 1. These provided a clear understanding of the radio propagation behaviour inside a building and the radio performance of Bluetooth specifications. Profound understanding of the propagation characteristics of the indoor radio channel is a major requirement for successful design of any indoor wireless communication systems. …

A Cable/Wireless Modulation/Demodulation Frontend Module For High Speed/Broadband Datalink, Pay Peng Clarice Chong

Theses : Honours

What are the modulation/demodulation schemes that are suitable tor cable or wireless high speed or broadband data link, between 1 Mbps to 30 Mbps? The recent adoption of modulation schemes such as OFDM, 8-VSB, OAM, for Digital Television broadcast (DTV), Asymmetrical Digital Subscriber Lines (ADSL), and Cable Modem (CM) for Internet access, is poss'1ble because of the increase bit/Hz in these modulations over conventional modulation schemes. These modulation/demodulation schemes could also offer similar advantages to dedicated data link applications such as home-networking using cable or wireless medium. This report document the project implementation of Quadrature Amplitude Modulation as the modulation …

The Impact Of Fine Sediment On Stream Macroinvertebrates In Urban And Rural Oregon Streams, Raymond S. Hoy

Dissertations and Theses

Urbanization, often characterized by high impervious surface area, can result in excessive inputs of fine sediments into urban streams. Excessive fine sediments can blanket the stream bed filling the interstitial space in the substratum, which may have adverse effects on stream biota. A field survey was conducted in Oregon urban and non-urban basins to investigate the relationship between fine sediments and stream macroinvertebrates. Physical, chemical, and biological data were collected from 59 stream sites in two urban and two rural streams. The stream sites fulfilled a continuous sediment gradient, which ranged from a low of 2% of fine sediment in …

Measurement Of Open Beauty Production In Photoproduction At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari

Faculty Publications

The production and semi-leptonic decay of heavy quarks have been studied in the photoproduction process e+p → e+ + dijet + e- + X with the ZEUS detector at HERA using an integrated luminosity of 38.5 pb-1. Events with photon-proton centre-of-mass energies, Wγp, between 134 and 269 GeV and a photon virtuality, Q2, less than 1 GeV2 were selected requiring at least two jets of transverse energy Ejet1(2)T > 7(6) GeV and an electron in the final state. The electrons were identified by employing the ionisation energy loss measurement. The contribution of beauty quarks was determined using the transverse momentum of …

Measurement Of The Neutral Current Cross Section And F2 Structure Function For Deep Inelastic E+P Scattering At Hera, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Pesci

Faculty Publications

The cross section and the proton structure function F2 for neutral current deep inelastic e+p scattering have been measured with the ZEUS detector at HERA using an integrated luminosity of 30 pb-1. The data were collected in 1996 and 1997 at a centre-of-mass energy of 300 GeV. They cover the kinematic range 2.7 < Q2 < 30000 GeV2 and 6-10-5 < cursive Greek chi < 0.65. The variation of F2 with cursive Greek chi and Q2 is well described by next-to-leading-order perturbative QCD as implemented in the DGLAP evolution equations.

Search For Resonance Decays To A V̄ Plus Jet In E+P Scattering At Desy Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Lacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari

Faculty Publications

A study of the v̄-jet mass spectrum in e+p→v̄X events at a center-of-mass energy 300 GeV has been performed with the ZEUS detector at the HERA collider at DESY using an integrated luminosity of 47.7 pb-1. The mass spectrum is in good agreement with that expected from standard model processes over the v̄-jet mass range studied. No significant excess attributable to the decay of a narrow resonance is observed. By using both e+p→>e+X and e+p-vX data, mass-dependent limits are set on the s-channel production of scalar and vector resonant states. Couplings to first-generation quarks are considered and limits are …

The Impact Of Creative Problem Solving For Generaleducation Intervention Teams On Team Members' Ratings Of Treatment Acceptability, Jennifer L. Grimes

All-Inclusive List of Electronic Theses and Dissertations

Many states require or recommend school-based, problem-solving teams in an effort to develop interventions to address student and teacher needs. Often these teams have not been trained in a structured problem-solving process, which is thought to improve the quality of interventions developed by a team. Creative Problem Solving (CPS) is a problem-solving process developed from creativity and cognitivePsychology literature and has been found to increase team effectiveness. CPS has been modified for use with school-based, problem-solving teams, which are called GeneralEducation Intervention (GEI) teams in the state of Indiana, to assist in developing quality interventions. This modified process is called …

Towards Comparative Profiling Of Parallel Applications With Pperfdb, Christian Leland Hansen

Dissertations and Theses

Due to the complex nature of parallel programming, it is difficult to diagnose and solve performance related problems. Knowledge of program behavior is obtained experimentally, with repeated runs of a slightly modified version of the application or the same code in different environments. In these circumstances, comparative performance analysis can provide meaningful insights into the subtle effects of system and code changes on parallel program behavior by highlighting the difference in performance results across executions.

I have designed and implemented modules which extend the PPerfDB performance tool to allow access to existing performance data generated by several commonly used tracing …

Post-Test Implementation Of Twntn4a Correction Code At O.3m Tct, Ryuichi Machida

Theses

Airfoil characteristics measured in a wind tunnel typically differ from those obtained in free air due to the confinement of airflow in tunnel test sections and the development of boundary layer on tunnel walls. Wind tunnel measured quantities, e.g. Mach number, Reynolds number, angle of attack, require corrections to determine their equivalent values in free air. TWNTN4A is a correction program capable of correcting wall interference effects in 2-D wind tunnels. TWNTN4A was applied to correct over 300 data files obtained from tests performed in 0.3m Transonic Cryogenic Tunnel (TCT) at NASA Langley. Data describe Mach number range of 0.50 …

John Smith: A Charismatic And Transformational Religious Leader, Philip B. Muston

Theses: Doctorates and Masters

John Smith is best known as the charismatic leader and president of God's Squad Motorcycle Club, which seeks to proclaim and incarnate the Christian gospel in Australian outlaw motorcycle subculture. Smith is in fact an evangelist and public figure in his own right. As well he is a teacher and social commentator whose prophetic statements and interpretation of events had an impact in his own culture and abroad. He is also a media spokesman and unofficial 'priest' for thousands who feel themselves alienated from institutional expressions of Christianity, and the pioneering founder of alternative church congregations. This biographical and theoretical …

Depth-First Search Embedded Wavelet Algorithm For Hardware Implementation, Li-Minn Ang

Theses: Doctorates and Masters

The emerging technology of image communication over wireless transmission channels requires several new challenges to be simultaneously met at the algorithm and architecture levels. At the algorithm level, desirable features include high coding performance, bit stream scalability, robustness to transmission errors and suitability for content-based coding schemes. At the architecture level, we require efficient architectures for construction of portable devices with small size and low power consumption. An important question is to ask if a single coding algorithm can be designed to meet the diverse requirements. Recently, researchers working on improving different features have converged on a set of coding …

Statistical Multiplexing And Connection Admission Control In Atm Networks, Guoqiang Mao

Theses: Doctorates and Masters

Asynchronous Transfer Mode (ATM) technology is widely employed for the transport of network traffic, and has the potential to be the base technology for the next generation of global communications. Connection Admission Control (CAC) is the effective traffic control mechanism which is necessary in ATM networks in order to avoid possible congestion at each network node and to achieve the Quality-of-Service (QoS) requested by each connection. CAC determines whether or not the network should accept a new connection. A new connection will only be accepted if the network has sufficient resources to meet its QoS requirements without affecting the QoS …

Teacher-Class, Teacher-Group And Student Interactions : Opportunities For Learning In Primary Science Classrooms, Christine A. Coulstock

Theses: Doctorates and Masters

Many studies have investigated learning in science classes, examining various influences on the understandings that students develop. The purpose of this study was to investigate the interactions that took place in upper primary science lessons, and the teacher and student behaviours affected these interactions and the opportunities for learning. The three classes that were selected for the study were similar and the teachers were all experienced primary teachers. The teachers were supplied with a set of science lessons on the topic of electric circuits. The resources included background information for the teachers and suggested activities, demonstrations, analogies and focus questions …

Internet Content Control In Australia : Data Topology, Topography And The Data Deficit, David Harte

Theses: Doctorates and Masters

The success of the online adult industry has provoked a public policy controversy over the need for internet censorship, and in recent times there has emerged desire to protect minors from possibly unsuitable content. On January 1st 2000, the Broadcasting Services Amendment (Online Services) Act (Cwlth, 1999) (BSA) was proclaimed. The Act purports to regulate and control Internet content in Australia. Operating in tandem with the Act is the Internet Industry Association Code of Practice, giving Australia a co-regulatory approach to Internet content control. The Australian Broadcasting Authority (ABA) is charged with implementing the regime. This study sets out examine …

Financial Intermediation And Economic Performance In Zimbabwe, Gift Chirozva

Theses: Doctorates and Masters

Financial literature is replete with theoretical and empirical evidence suggesting financial development has a causal effect on economic growth. Yet there is no consensus on the finance-growth nexus. The direction of causality is still controversial In fact, classical economists argue that financial factors are neutral and hence cannot have real effects. Critics argue the traditional methods of identifying long run economic relationships fail to address the methodological conflict between equilibrium implied by theory and the disequilibria in the data. The rise of new representation techniques such as the General Methods of Moments (GMM) and vector autoregression [VAR] brought with them …

Vlsi Implementation Of A Massively Parallel Wavelet Based Zerotree Coder For The Intelligent Pixel Array, Geoffrey N. Alagoda

Theses: Doctorates and Masters

In the span of a few years, mobile multimedia communication has rapidly become a significant area of research and development constantly challenging boundaries on a variety of technologic fronts. Mobile video communications in particular encompasses a number of technical hurdles that generally steer technological advancements towards devices that are low in complexity, low in power usage yet perform the given task efficiently. Devices of this nature have been made available through the use of massively parallel processing arrays such as the Intelligent Pixel Processing Array. The Intelligent Pixel Processing array is a novel concept that integrates a parallel image capture …

Nursing Students' And Clinical Teachers' Perceptions Of Effective Teacher Characteristics, Shirley Chow

Theses: Doctorates and Masters

Instructional and organisational strategies can improve students' transfer of knowledge and skill to the workplace. Constraints on transfer include: 1. a shortage of teachers who can build transfer inlo programmes; and 2. time span (interval) between teaching of the task and transfer of learning. Fifteen nursing students and five clinical teachers from a university in Western Australia participated in the initial qualitative component of the study. These students and teachers were asked to list effective clinical teachers' behaviours which were then compared with beaviours listed in the Rauen's Clinical Instructor Characteristics Rating Scale (1974). Using a modified Rauen's Scale, 200 …

Molecular Genetic Investigation Of Autosomal Dominant Muscular Dystrophy, Christopher Meredith

Theses: Doctorates and Masters

This thesis contributes to the Human Genome Project by adding detail to the physical and genetic maps of the human genome, and by identifying a strong candidate gene for a form of distal myopathy. Genomic clones for the human skeletal muscle genes slow troponin (TNN/1), alpha actin (ACTA1), and (3-tropomyosin (TPM2) were isolated for use in the fluorescent in situ hybridisation localisation of these genes on the cytogenetic map of the human genome. The localisation of these genes made them potential candidates for inherited skeletal muscle diseases, including the muscular dystrophies investigated here. Microsatellite, VNTR and RFLP markers were used …

Time Series Modelling Of The Environmental Factors Affecting The Daily Catch Rate Of Western Rock Lobster, Sukanlaya Srisurichan

Theses: Doctorates and Masters

The western rock lobster fishery is one of the most significant and valuable single species fisheries in Australia and in the world. It generates a gross commercial value of $200-300 million dollars per year for the economy of Western Australia. The impact of environmental factors on the daily catch rate of the western rock lobster is of particular interest to the W.A. Marine Research Laboratories, at the Ministry of Fisheries, Western Australia. Considerable time and effort has been invested into building and developing suitable models to measure such impact on this fishery. While past research has focussed on monthly or …

Communicative Interaction In The English Language Classroom : A Field Study Of A Western Teacher As Change Agent In Two Chinese Primary Schools In Zhong Shan, People's Republic Of China, Monika Trittibach-Andres

Theses: Doctorates and Masters

The purpose of this study was to investigate the influence of a 'Change Agent' in teaching English as a Foreign Language (EFL) in Chinese primary schools, and to determine whether changes were perceivable in the number and type of communicative interactions that occurred in EFL classrooms. The Department of Education of Zhong Shan, People's Republic of China, welcomed this research as the communicative approach to teaching English is sanctioned by the authorities. However, the formality of the actual classroom in primary schools often precludes much use of this method. An Investigation of the influence of a Westerner in the role …

A Framework For River Restoration Planning : Considering Conceptual And Structural Perspectives From Case Studies Of The Liao River In China And The Kalgan River In Australia, Ye Sun

Theses: Doctorates and Masters

Over the last decade, restoration ecology has been considered a new paradigm for dealing with many of the environmental problems of river systems. It is also recognized that management decisions have a greater chance of being successful if they are based on a thorough understanding of a concept or a plan. A review of current studies on river restoration and river restoration planning revealed that managers and scientists have put a substantial emphasis on ecological science and technology in restoration, while many sociopolitical and economic elements have been de-emphasized Besides this, understanding and experiences of river restoration, especially those of …

Student Empowerment In A Primary School Classroom : A Descriptive Study, Anna M. Sullivan

Theses: Doctorates and Masters

Empowering students to take control to lead functional and fulfilling lives should help them meet their needs for power and belonging, and enable them to realise their social goals. Such an outcome should positively affect students' achievement motivation. However, there is little understanding and research on the construct of student empowerment particularly in the primary school context from the teacher and student perspective. Teachers have a power-over relationship with students and arc in a position to decide how they exercise that power. Teachers who choose to enable student empowerment can share power with students to establish positive forces of power, …

International Portfolio Diversification With Special Reference To Emerging Markets, Joseline Chimhini

Theses: Doctorates and Masters

This study evaluates the potential benefits that investors obtain from diversifying their portfolios into emerging markets when the time varying behavior of assets is considered. It also tests whether the existing asset-pricing model developed in the context of developed markets, which assumes complete integration, can explain the expected returns in emerging markets and determines the risk of investing in these markets using cross section and time series data. An international capital asset pricing model (ICAPM) with time varying moments developed by Harvey (1991) is adopted. The conditional asset-pricing model, which takes into account prevailing world economic factors, was used. The …

On The Classical Ramsey Number R(3,3,3,3), Susan Fettes

Theses

The classical Ramsey Number R(3, 3, 3, 3), which is the smallest positive integer n such that any edge coloring with four colors of the complete graph on n vertices must contain at least one monochromatic triangle, is discussed. Basic facts and graph theoretic definitions are given. Papers concerning triangle-free colorings are presented in a historical overview. Mathematical theory underlying the main result of the thesis, which is Richard Kramers unpublished result, i?(3,3,3,3) < 62, is given. The algorithms for the com putational verification of this result are presented along with a discussion of the software tools that were utilized to obtain it.

Segmented Face Detection Using Clustering, Gunturi Srimanth

Theses

Perception forms a very important part of learning. The way we perceive things has a lot to do with how we understand. It forms a very crucial link in our build-up of knowledge. Living organisms have a remarkable ability of understanding spatial information. It is due to their inherent ability of generating native organizations, models, etc, and most importantly, their ability to generalize and infer - based upon symmetry, probability, familiarity, etc, that allows them to instantly adapt their knowledge to the given surroundings. It forms a very basic step in survival. When trying to make machines intelligent, one of …

Evaluation Of The Structural Design Of New Liquid Containers, Jadranka Mandic

Theses

GECOS (Global Eco System) bottle with an additional using quality, represents new idea, which is patented innovation. Basic bottle assignment of GECOS bottle is for storage and transportation of the liquids from food domain, such as water, juices or milk. Additional using quality of GECOS bottles comes from unique construction, as well as their closures. When GECOS bottle is empty it can serve as universal building elements, which are connected by closures as connecting elements into new three-dimensional structures. In such a way, the bottles are easier to be kept, collected or used in a game as didactic and creative …