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Effects Of Contrasting Dispersal Strategies On Populations Of Two Species Of Intertidal Starfish: Patiriella Calcar And Patiriella Exigua, Alison Hunt
University of Wollongong Thesis Collection 1954-2016
Despite the importance of dispersal in regulating patterns of gene flow, there are still major gaps in our knowledge of the consequences of many dispersal strategies for the genetic structure of marine populations. Until recently, most of our knowledge was based on studies which had investigated sexually reproducing species with the potential for wide dispersal of planktonic larvae. Relatively few studies have concentrated on intertidal species which lack a clear means of dispersal.
This study used ecological and genetic techniques to investigate the consequences of restricted dispersal for marine intertidal populations, and to provide an important comparison for two closely …
Some Analytical Applications Of Chemically Modified Electrodes, Peter John Riley
Some Analytical Applications Of Chemically Modified Electrodes, Peter John Riley
University of Wollongong Thesis Collection 1954-2016
The continued advancement of electrochemical sensing is inextricably linked with the development of modified electrodes. New preconcentration schemes, utilising analyteelectrode interactions not normally employed in conventional sensors, open up a number of potential applications for these electrodes. One flexible route to the generation of electrode modifiers is through the use of electrochemically generated polymers to functionalise the electrode surface.
This work has investigated the use of a number of monomers for electrode modification. Monomers studied include pyrrole, thiophene, 3-methylthiophene, 2,2'-bithiophene, Nethyltyramine and 4-vinylpyridine. The electrochemical generation of polymers from these monomers was studied and those found to deposit as reproducible …
Tryptophan Metabolism In The Human Lens, Andrew Martin Wood
Tryptophan Metabolism In The Human Lens, Andrew Martin Wood
University of Wollongong Thesis Collection 1954-2016
The aim of this thesis was to discover more about the pathway in the human lens which leads to the formation of 3-hydroxykynurenine glucoside, the major UV-filter substance. This biosynthetic pathway has received scant attention since the discovery of the glucoside by van Heyningen in 1971.
In order to further examine the unique metabolism of tryptophan in human lenses, an intact lens organ culture system was employed. Radiolabelled tryptophan was added to the artificial aqueous humor of organ cultured-lenses and its incorporation was followed by analysis of the low molecular weight lens fraction by high pressure liquid chromatography and liquid …
Ultimate Load Capacity Of Circular Hollow Sections Filled With Higher Strength Concrete, Hamid Reza Kavoossi
Ultimate Load Capacity Of Circular Hollow Sections Filled With Higher Strength Concrete, Hamid Reza Kavoossi
University of Wollongong Thesis Collection 1954-2016
An experimental and theoretical study concerning the ultimate load behaviour of the circular hollow sections filled with higher strength concrete has been carried out. This study involves the structural characteristics of the composite sections under axial concentric and the eccentric loads.
A total number of 63 experimental tests have been carried out for the different loading situations and structure forms. This study has been divided into the three main parts. The first part concerns the behaviour of the hollow sections, and the second part is a study on the ultimate load behaviour of the circular hollow sections filled with higher …
A Hypertext Based Intelligent Assistant For Courseware Preparation: A Step Toward Authoring Shells, Abdolhossein Sarrafzadeh
A Hypertext Based Intelligent Assistant For Courseware Preparation: A Step Toward Authoring Shells, Abdolhossein Sarrafzadeh
University of Wollongong Thesis Collection 1954-2016
Existing intelligent tutoring systems are mostly academic prototypes built for research purposes. The main reason for this is that they are time consuming and expensive to build. Another reason is that there are no tools that can be used for building such systems for teachers who usually are not programmers. In this study we have proposed authoring shells as a tool for building intelligent tutoring systems to be used as a goal for research in this area. As a step toward authoring shells, we have designed and implemented a hypertext based intelligent assistant (IACP) for developing courseware meant for use …
Axial Flux Permanent Magnet Servo Motor With Sixteen Poles, S. Geetha
Axial Flux Permanent Magnet Servo Motor With Sixteen Poles, S. Geetha
University of Wollongong Thesis Collection 1954-2016
The intention of this project is to design, build, analyse and test a novel form of servo motor. Axial flux permanent magnet machines are highly suitable for servo motors because of their very high torque to inertia ratio. These machine have axial flux geometry. That is, the rotor and stators are formed as discs rather than drums as is the case for conventional machines. This project deals with the development and analysis of a high performance axial flux permanent magnet servo motor using Neodymium-Iron-Boron permanent magnets.
Special problems which arise due to the geometry and high pole number of the …
The Relationship Between Performance, Environment, Control And Strategy In The Australian General Insurance Industry: A Multiple Case Study, Gregory Kenneth Laing
The Relationship Between Performance, Environment, Control And Strategy In The Australian General Insurance Industry: A Multiple Case Study, Gregory Kenneth Laing
University of Wollongong Thesis Collection 1954-2016
This study posits that in an organisational context, a contingent relationship exists between the variables of performance, environment, control and strategy. A random sample of general insurance companies was initially contacted by telephone. Utilising a contingency framework and the Miles & Snow (1978) strategic typology, three companies, identified as a "prospector", a "defender" and an "analyser", participated in this study. Data for the three case studies was collected from executive officers and other staff using an indepth survey, questionnaires and interviews. Analysis disclosed that the firm representing the "prospector" type out-performed the other firms. This was surprising given the findings …
Description Of The Development And Application Of A Code To Describe And Analyse The Overt Teacher Initiated Literacy Messages Being Conveyed To Students Within A Classroom Context, Bronwyn Ruth Beecher
Description Of The Development And Application Of A Code To Describe And Analyse The Overt Teacher Initiated Literacy Messages Being Conveyed To Students Within A Classroom Context, Bronwyn Ruth Beecher
University of Wollongong Thesis Collection 1954-2016
This thesis reports the development and application of an observation/analytic code which describes and interprets overt teacher initiated literacy messages conveyed to students within a classroom context. The relevant areas of literature relate to observation/documentation procedures, teacher effectiveness, and messages and meaning. Aspects of various methodologies from naturalistic inquiry were used: namely, educational ethnography, grounded theory and case study. From experiences of observing three teachers during classroom literacy sessions as well as examining concepts and issues arising from the literature, a code was developed and refined. The processes involved in the development of the code through naturalistic inquiry are described …
Strength And Deformation Behaviour Of Precast Beam-Column Connections For Reinforced Concrete Building Frames, Yao Bao-Zhong
Strength And Deformation Behaviour Of Precast Beam-Column Connections For Reinforced Concrete Building Frames, Yao Bao-Zhong
University of Wollongong Thesis Collection 1954-2016
Connection design is one of the most important considerations for the successful construction of precast concrete strnctures. The configuration details of the connection affect the strength, stability, ductility as well as load redistribution of the structure under load.
This thesis presents a study of strength and deformation behaviour of beam-column connections in precast reinforced concrete building frames. Six half-scale frame specimens were designed, built and tested in the structural laboratory to evaluate the properties of precast concrete frames. These included two pairs of precast frame specimens with two different types of connections and two monolithic frame specimens. The sizes, reinforcing …
Simulation Of The Indentation Of Metals, Warren Geoffrey Crouch
Simulation Of The Indentation Of Metals, Warren Geoffrey Crouch
University of Wollongong Thesis Collection 1954-2016
Metals are among the most widely used structural materials known to man, and in many applications, the key to their usefulness is their unique combination of mechanical properties. The test most commonly used to determine the mechanical properties of metals is the indentation hardness test in which an indenter of a specified shape is forced into the surface of the specimen under carefully controlled conditions. Measurements made of the impression remaining after the indenter is removed are used to calculate a hardness number which is an indicator of the mechanical properties of the specimen.
The Effects Of Alloying Additions On The Microstructure And Corrosion Properties Of An Al-Zn Galvanizing Alloy, David James Nolan
The Effects Of Alloying Additions On The Microstructure And Corrosion Properties Of An Al-Zn Galvanizing Alloy, David James Nolan
University of Wollongong Thesis Collection 1954-2016
The effects of minor additions on the micro structure and mechanical and corrosion behaviour of ZINCALUME (Zn-55%Al-1.6%Si) coatings are reported. Magnesium (0.1-2.5%), calcium (0.1-0.5%), gallium (0.05-1.0%) and copper (0.05-1.0%) additions were made singly to the ZINCALUME alloy and coatings with controlled mass were produced. Such coatings were used to analyse microstructural effects (using optical and scanning electron microscopy), mechanical properties (using microhardness measurement and visual estimation of the severity of coating cracking on bending deformation) and corrosion properties (using a humidifed salt spray test and outdoor exposure). It is found that magnesium additions segregate to the zinc-rich interdendritic regions, forming …
Traffic Profiles For Audio And Data Collaborative Work Systems, W. T. Musangeya
Traffic Profiles For Audio And Data Collaborative Work Systems, W. T. Musangeya
University of Wollongong Thesis Collection 1954-2016
A predictive model of the behavior of multimedia communications systems on digital broadband networks is needed because, it is through knowledge of the traffic characteristics of the arrival process, that proper network resource dimensioning can be performed to avoid congestion and maintain the network quality of service. This thesis analyses the traffic from multimedia systems that are expected to become common in the next decade. The traffic is used to develop models to characterise the statistical properties of such multimedia communications systems.
Assessment And Management Of Problems Arising From Hydocarbon Contamination In The Operations Of An Urban Railway System, Kwok-Keung Ngan
Assessment And Management Of Problems Arising From Hydocarbon Contamination In The Operations Of An Urban Railway System, Kwok-Keung Ngan
University of Wollongong Thesis Collection 1954-2016
This study was an attempt at an initial assessment of problems arising from hydrocarbon contamination in the operations of an urban railway system. The assessment was focused on oil and grease materials and hence coal or other hydrocarbons were omitted. This study also included some subjective judgement of how these problems should be managed, in light of the writer's experience as a railway engineer and based on some simplified experiments. Although several dimensions of the problems were studied including engineering, management, legal, and staff training and development aspects, the main focus of this study was put on bioremediation.
Breast Feeding Patterns Of Aboriginal And Non Aboriginal Women In The Northern Territory And Factors Associated With Early Cessation, Michelle Tasseron
Breast Feeding Patterns Of Aboriginal And Non Aboriginal Women In The Northern Territory And Factors Associated With Early Cessation, Michelle Tasseron
University of Wollongong Thesis Collection 1954-2016
It is the responsibility of professionals working in health care to foster the establishment of practices that positively effect health. Breast feeding is one such practice. The aims of this investigation were to determine the prevalence of breast feeding in the Northern Territory and to identify causes of early breast feeding cessation. The sample included infants bom in the Northem Territory between 1 September and 1 December 1992. Results were analysed for three distinct groups.
Echolocation: Evaluation Of Finite Element Analysis Of Ultrasonic Transducers, Robert Pierre D'Souza
Echolocation: Evaluation Of Finite Element Analysis Of Ultrasonic Transducers, Robert Pierre D'Souza
University of Wollongong Thesis Collection 1954-2016
Echolocation is the process of building an acoustic image of the environment by sensing the ultrasonic echoes that are bounced off objects in the environment. It is naturally observed in bats and dolphins, who use it for navigation and orientation. The Finite Element Method is one of several numerical techniques that simplify the abstract equations of calculus and obtain approximate solutions for real-world physical problems. This thesis evaluates the suitability of various numerical 'Element Methods' for the modelling and design of ultrasonic transducers and the study of their radiated and scattered sound fields. To achieve this, it determines the selection …
The Niemr/Emf Controversy: The Social Construction Of Scientific Knowledge And Science Policy In The 'Gibbs' Powerline Inquiry 1990/91, David W. Mercer Dr
The Niemr/Emf Controversy: The Social Construction Of Scientific Knowledge And Science Policy In The 'Gibbs' Powerline Inquiry 1990/91, David W. Mercer Dr
University of Wollongong Thesis Collection 1954-2016
This thesis examines the scientific controversy concerning the health hazards of non-ionizing electromagnetic radiation (NIEMR) and electric and magnetic fields (EMF). It focuses on the social construction of scientific knowledge and political shaping of science policy which took place during the NSW State Government's Inquiry into Community Needs and High Voltage Transmission Line Development 1990/91 chaired by Sir Harry Gibbs - the 'Gibbs' Inquiry'. The thesis begins by providing an historical overview of the NIEMR/EMF debate. Next it reviews the literature on scientific/technical controversy leading to the development of an eclectic model for evaluating scientific/technical controversy. This model is then …
Claiming Selfhood: Three Black South African Women Writersunder Apartheid, Jeanette A. Dean
Claiming Selfhood: Three Black South African Women Writersunder Apartheid, Jeanette A. Dean
University of Wollongong Thesis Collection 1954-2016
This dissertation is a study of the works of Miriam Tlali, Ellen Kuzwayo and Emma Mashinini, three Black South African Women Writers who wrote while living under the Apartheid System. The study focusses on the life narratives that are revealed in both fiction and non-fiction. The first chapter provides information showing the difiBculties involved in the writing, printing, publishing and marketing of their works. The rest of the study discusses how their texts are at the service of their communities and how the communities contribute to the individual identities developed in the writing. Black, female, selfhood needs to be retrieved …
The Role Of Visual Spatial Frequency Channels In The Global Precedence Effect, Karen Pepper
The Role Of Visual Spatial Frequency Channels In The Global Precedence Effect, Karen Pepper
University of Wollongong Thesis Collection 1954-2016
Many studies have found that the global elements of hierarchically organized stimuli are processed more quickly than the local elements. This is known as the global precedence effect (GPE). It has been suggested that this reflects the activities of two visual sub-systems: a fast-transmitting sub-system sensitive to low spatial frequencies, and a slow-transmitting sub-system sensitive to high spatial frequencies. The present series of experiments investigates the role of these spatial frequency channels in the GPE by manipulating factors that are known to affect these channels to see if they also have a predictable effect on the GPE. These factors include …
Multi-Scale Texture Segmentation And Recognition, Heri Gunawan Widjojo
Multi-Scale Texture Segmentation And Recognition, Heri Gunawan Widjojo
University of Wollongong Thesis Collection 1954-2016
Texture is a surface property of an object which humans routinely use in recognition and classification tasks. In image processing and pattern recognition texture is recognised as one of the main features useful for analysis in a variety of applications ranging from medical imaging to remote sensing. This thesis addresses the problem of texture-based identification of objects by a guided mobile robot. In the situation envisaged the acquisition of the texture image is allowed to take place at any distance. Since the viewing distance of the scene varies, the scale of the acquired image will also vary. The possibility of …
Algorithms For Searching For Normal And Near- Yang Sequences, Marc-Michel Gysin
Algorithms For Searching For Normal And Near- Yang Sequences, Marc-Michel Gysin
University of Wollongong Thesis Collection 1954-2016
This thesis is about normal and near-Yang sequences. An original definition of near-Yang sequences is included. After a short overview of the mathematical background of normal and near-Yang sequences, different algorithms for searching for these sequences are described. These algorithms can be divided in two groups: exhaustive search algorithms and heuristic search algorithms. One of the most important heuristic search algorithms is the simulated annealing algorithm. The following new results were found: Near-Yang sequences with weight 12 do exist for the following lengths ^ = 7,11,13,15. Normal sequences of length n = 24 do not exist. An exhaustive search for …
Dietary Omega-6 Fatty Acids In Protein-Energy Malnutrition, Kerry William Withers
Dietary Omega-6 Fatty Acids In Protein-Energy Malnutrition, Kerry William Withers
University of Wollongong Thesis Collection 1954-2016
This thesis examines protein-energy malnutrition (PEM) in rats and the influence of omega-6 polyunsaturated fatty acids (PUFA) on this condition.
In the first of three experiments, rats were assigned to one of four diets, which were all isoenergetic and contained 10% (w/w) fat. One group was fed a control diet (containing 22% w/w protein) ad libitum., the other three diets were reduced in protein (10% w/w ). and at one third the food consumption rate of the control diet rats. These three PEM groups received different amounts of PUFA. Almost all of the PUFA in the diets was Hnoleic acid. …
The Permian Sedimentology Of The Jervis Bay Area, Southern Sydney Basin., Kim Straub
The Permian Sedimentology Of The Jervis Bay Area, Southern Sydney Basin., Kim Straub
Science, Medicine & Health - Honours Theses
This thesis involves the identification and interpretation of the environment of deposition of the sedimentary facies that are present in the Jervis Bay study area. Six lithofacies are described in the Snapper Point Formation and one in the Wandandian Siltstone.
The Effects Of Human Cytomegalovirus Challenge On The Proliferation And Inhibitor Production Of Myeloid Cells U-937 And Thp-1, Zhong-Yi Ding
The Effects Of Human Cytomegalovirus Challenge On The Proliferation And Inhibitor Production Of Myeloid Cells U-937 And Thp-1, Zhong-Yi Ding
University of Wollongong Thesis Collection 1954-2016
This project examines the effects of HCMV infection on cell proliferation, differentiation, as well as on the growth factor production of myeloid cells during the myelopoiesis. The major focus is on the effects of the challenge of HCMV AD 169 strain on the proliferation and inhibitor production of U-937 and THP-1 cells in the presence or absence of retinoic acid. In the present study, promonocytic U-937 and THP-1 cells were treated with 500 nM retinoic acid. These two cell lines are known as leukemia cells which are blocked at a relatively late stage along the myelopoiesis. Treatement of both cell …
Application Of Chemical Techniques To The Study Of Lens Metabolites And Proteins, Jiulin Zhu
Application Of Chemical Techniques To The Study Of Lens Metabolites And Proteins, Jiulin Zhu
University of Wollongong Thesis Collection 1954-2016
This research work is composed of two projects: namely, chemical synthesis of 3-hydroxykynurenine glucoside, an important lens metabolite and; examining, with the aid of capillary electrophoresis and electrospray mass spectrometry, the serine loss of the C-terminal extensions of bovine α A and βB2 lens crystallins in order to determine whether any age related degradation occurs.
Asymmetric Synthesis Via Chiral Sulfur Reagents, Zemin Dong
Asymmetric Synthesis Via Chiral Sulfur Reagents, Zemin Dong
University of Wollongong Thesis Collection 1954-2016
This thesis is presented in two parts. Part 1. Asymmetric Synthesis via Chiral Sulfoximines. Chapter 1. Asymmetric Synthesis of Chiral Alcohols and Ketones from Sulfoximines The application of chiral sulfoximines to the asymmetric synthesis of chiral alcohols and ketones is described historically in Chapter 1. Chapter 2. Asymmetric Synthesis of Chiral Alcohols and Chiral Ketones from (+)-(S)-N-t- B u t y l d i p h e n y l s i l y l - S - M e t h y l - S-Phenylsulfoximine. The synthesis and applications of (+)-(S)-N-t-butyldiphenylsilyl- S-methyl-S-phenylsulfoximine to the asymmetric synthesis of chiral alcohols …
Selected Polymer Electrodes For Preconcentration Sensing, Anton Dominis
Selected Polymer Electrodes For Preconcentration Sensing, Anton Dominis
University of Wollongong Thesis Collection 1954-2016
Electroanalysis has progressed rapidly during the last half century due to the development of more detailed electrochemical theory and modem electronic instrumentation [1-4]. Furthermore, electrochemical techniques have contributed to research advances in the fields of organic, inorganic, and more recently, bio-chemistry because the control of oxidation and reduction processes by electrolysis is much more precise than is possible with conventional chemical reactants [5-12]. There are many advantages associated with the use of modern electrochemical instrumentation and techniques, especially in the area of electroanalysis: instrumentation can be made portable [13-15] power consumption is relatively low no expensive instrumental accessories are needed …
Integration Of Object-Oriented And Relational Database Systems, Seyed Mohsen Sedighi
Integration Of Object-Oriented And Relational Database Systems, Seyed Mohsen Sedighi
University of Wollongong Thesis Collection 1954-2016
In an organisation, there are many autonomous database systems with different data models, query languages, and schémas. The user in the organisational level needs to have a shared access to the databases by using a single data model, and a single query language. The aim of this thesis is to propose and evaluate a method for integration of autonomous, heterogeneous database management systems ODBMSs) to facilitate shared access through a system, based on the method, called Database Integration Methodology (DIM). The thesis first reviews the basic concepts as related to heterogeneous DBMSs^ then DIM is proposed as a general method …
Parallel Generation Of C[R]Yptographically Strong Pseudo-Random Sequences, Hossein Ghodosi
Parallel Generation Of C[R]Yptographically Strong Pseudo-Random Sequences, Hossein Ghodosi
University of Wollongong Thesis Collection 1954-2016
The operational disadvantages of perfectly secure cipher systems has led to the development of practically secure stream cipher systems. The security of such cipher systems depend on the strength of the keystream. In order to examine the strength of a sequence two different types of criteria are considered. Statistical tests, are designed to assess how a sequence with a particular property behaves randomly. Complexity measures, are applied to determine the complexity, or equivalently the unpredictability of a sequence. Sequences obtained by LFSR are considered as building blocks of pseudo-random (PR) sequence generators. Transformations on the decimal expansion of irrational numbers …
The Contribution Of Urban Runoff To Surface Water Quality In The Botany Wetlands, Robyn Sim
The Contribution Of Urban Runoff To Surface Water Quality In The Botany Wetlands, Robyn Sim
University of Wollongong Thesis Collection 1954-2016
The Botany Wetlands is an important freshwater ecosystem in the Sydney area which provides a significant habitat for aquatic flora and fauna. Additionally, these Wetlands have value as an aesthetic backdrop to an urban landscape, provide a recreational, historical and flood mitigation resource, and provide the opportunity for scientific and educational use. The Wetlands are degraded due to urbanisation of the catchment and past management practices.
Ostracoda From The Java Sea, West Of Bawean Island, Indonesia, Kresna Tri Dewi
Ostracoda From The Java Sea, West Of Bawean Island, Indonesia, Kresna Tri Dewi
University of Wollongong Thesis Collection 1954-2016
Ostracod faunas from surface and core sediment samples from west of Bawean Island, Java Sea, Indonesia have been studied- quantitatively. A total of 113 species including seven new species, 1 new subspecies and 16 species which remain in open nomenclature were recorded. The following new species and subspecies were erected: Polycope baweaniensis sp. nov., Cytherella javaseaense sp. nov., lAglaiocypris susilohadii sp. nov., Loxoconcha wrighti sp. nov., Loxoconcha ismailusnai sp. nov., Keijia tjokrosapoetroi sp. nov., Keijella carriei sp. nov. and Foveoleberis cypraeoides baweani ssp. nov.
Ostracod faunas from surface and core sediment samples from west of Bawean Island, Java Sea, Indonesia …