19,239 Works

The distribution, mineralogy and paragensis of the Hellyer Baritic and Siliceous Caps

R Sharpe
Baritic and siliceous caps are a feature of many volcanic-hosted massive sulphide deposits. Their distribution, mineralogy and geochemis~ are important to the understanding of the genesis of these deposits. The baritic and siliceous caps overlying the Hellyer volcanic-hosted massive sulphide deposit, western Tasmania, show a spatial affinity to the centres of hydrothermal activity, identified previously from copper contents of the ore. Mineralogical and textural investigations identified barite as a precursor to formation of the siliceous...

Robotic Vision By Using Bee Algorithm

L Zhou
With the development of technologies, robots have played an important role in many fields of the society. They help people to deal with a large amount of work, especially operate in the extremely dangerous environment instead of people. For a robot, effective obstacle avoidance is still a challenge in the development of robot. The existing systems sometimes combine with multi-devices to conquer this challenge so that the expensive cost has been as a negative factor...

Parallelization of the AAE algorithm

A Hameed
The exact algorithm formulated by Kececioglu and Starrett (2004) provides a solution to the NP-complete problem of aligning alignments in most biological cases. This work investigates potential speedups that may be gained through the parallelization of the dynamic programming phase of this particular algorithm. Results indicate it is possible to improve the run time performance of the algorithm over non-trivial alignments that compose to a matrix of greater than 10^5 cells.

Creating and Analysing Rauzy Graphs for DNA Sequences

D Nahodil
Bioinformatics is a new and interesting field of research, and genuine discoveries are being made all the time. This project aims to investigate the application of a mathematical tool, called a Rauzy graph, to the problem of classifying DNA sequences. This project aims to learn more about the properties of DNA, and the nature of the graphs themselves. The work for the project involves developing an algorithm for the computer to generate Rauzy graphs. Different...

From individuals to populations : personality traits in southern dumpling squid (Euprymna tasmanica Pfeffer, 1884) and their life history correlates

DL Sinn
Several major reviews have recently highlighted the interest amongst life scientists in understanding the ecological and evolutionary significance of animal personality traits (e.g., Wilson 1998; Gosling 2001; Sih et al. 2004a). The term personality trait as it is used here simply refers to consistent individual differences in an animal's behavioural style (as opposed to its discrete acts), and therefore, represent a potential suite of behavioural traits that can describe behavioural individuality in animals. Using personality...

Investigation of Distributed and Parallel Performance of a Genetic Algorithm

PJ Uren
Genetic algorithms, a stochastic evolutionary computing technique, have demonstrated a capacity for robust, efficient problem solving through highly parallel search space exploration. This work demonstrates how an improvement in performance and efficiency over the traditional serial approach can be achieved by exploiting this highly parallel nature to produce parallel genetic algorithms. Furthermore, it is shown that by incorporating domain specific knowledge into a genetic algorithm near optimal solutions can be located in minimal time.

Reproductive success and demography of the Orange-bellied Parrot Neophema chrysogaster

MC Holdsworth
The Orange-bellied Parrot is one of only two obligate migratory parrots in the world. The species is listed nationally as endangered and has been the subject of intensive study and conservation activities over the past 25 years. Reproductive and demographic data collected over this period from the wild population form the basis of this thesis. Remote breeding sites in southwestern Tasmania at Melaleuca and Birchs Inlet were used to study this species in the wild....

A Mathematical Model of a DC Machine

N Chuang
This research aims to determine how a mathematical model may predict the effects of a shorted and/or opened armature coil on a d-c machine. A mathematical model and a simulating computer were developed for a particular 0.375 kW d-c machine under both healthy and faulty conditions.\ \ The model was based on the coupled-coil theory, with a set of first order differential equations that were solved in the time domain. New techniques for measuring inductances...

A Mathematical Model of a DC Machine

N Chuang
This research aims to determine how a mathematical model may predict the effects of a shorted and/or opened armature coil on a d-c machine. A mathematical model and a simulating computer were developed for a particular 0.375 kW d-c machine under both healthy and faulty conditions.\ \ The model was based on the coupled-coil theory, with a set of first order differential equations that were solved in the time domain. New techniques for measuring inductances...

Hydrodynamics and zooplankton ecology in the Tamar Estuary, northern Tasmania, with special emphasis on larval fishes

A Lara-Lopez
This thesis describes results of a comprehensive study of the Tamar Estuary, a highly flushed system in northern Tasmania, conducted to investigate the link between hydrodynamic processes and zooplankton biomass with particular emphasis on larval fish dynamics. It comprised extensive plankton sampling together with measurements of physical parameters, between October 2001 and November 2002, including three 24-hour sampling sessions in the lower estuary to ascertain the effect of tidal currents in the transport of fishes....

A Peer to Peer Supply Chain Network

B Goldsmith
Many papers have speculated on the possibility of applying peer-to-peer networking concepts to networks that exist in the physical world such as financial markets, business or personal communication and ad hoc networking. One such application that has been discussed in the literature has been the application of peer-to-peer to corporate supply chains to provide a flexible communication medium that may overcome some classical problems in supply chain management. This thesis presents the design, development and...

A Peer to Peer Supply Chain Network

B Goldsmith
Many papers have speculated on the possibility of applying peer-to-peer networking concepts to networks that exist in the physical world such as financial markets, business or personal communication and ad hoc networking. One such application that has been discussed in the literature has been the application of peer-to-peer to corporate supply chains to provide a flexible communication medium that may overcome some classical problems in supply chain management. This thesis presents the design, development and...

The treatment of women who kill their violent male partners within the Australian criminal justice system

Rebecca Bradfield
My thesis examines the treatment of women who kill their violent male partners within the Australian criminal justice system. The primary aim of my study is to examine the circumstances in which women kill their violent partners and to explore the ability of the criminal law to have proper regard to these circumstances. The interaction between the criminal law and battered women who kill their violent partners is a topical issue that has generated substantial...

The treatment of women who kill their violent male partners within the Australian criminal justice system

Rebecca Bradfield
My thesis examines the treatment of women who kill their violent male partners within the Australian criminal justice system. The primary aim of my study is to examine the circumstances in which women kill their violent partners and to explore the ability of the criminal law to have proper regard to these circumstances. The interaction between the criminal law and battered women who kill their violent partners is a topical issue that has generated substantial...

Assessment and management of inherent and dynamic soil properties for intensive agriculture in the North Island, New Zealand and Tasmania, Australia

WE Cotching
The primary aim of the research reviewed in this thesis has been to provide information required by land managers on inherent and dynamic soil properties for sustainable intensive agriculture. A soil survey in the Te Puke district, New Zealand, found the soils to be young with the majority having a layer of tephra in their profiles which gives rise to low overall nutrient status and free draining properties. Soils in north west Tasmania were found...

A GIS study of Australia's marine benthic habitats

RJ Beaman
Continental shelf waters are subject to the greatest impact by humans. If marine ecosystems are to be efficiently managed and protected from the adverse effects of human activities, then identification of the types of marine habitats and the communities they contain is required. Research cruise data and existing data were collected at three diverse study sites on polar, temperate and tropical continental shelves within Australia's Exclusive Economic Zone (EEZ). This project conducted a multi-disciplinary analysis...

A Simplified Fuzzy-Logic Control System Approach to Obstacle Avoidance combining Stereoscopic Vision and Sonar

TI Grayston
Stereoscopic vision is a technique for calculating the depths of objects in a scene from two images. Ultrasonic ranging is a well-established technique for estimating the distance to objects by bouncing an acoustic pulse off the object and measuring the time-of-flight. As with any types of sensors, these techniques each have their associated strengths and weaknesses. Therefore it is desirable to be able to use both sensor types simultaneously on a robot such that the...

The relationship between community newspapers and social capital: the power to empower

R McManamey
Research confirms the positive relationship between commercial newspaper readership and social capital. However, the relationship between independent community newspapers and social capital is largely overlooked in social science research. The purpose of this study is to explore the relationship between community newspapers and social capital by analysing the newspaper content, and investigating the timing of the establishment and production of independent community newspapers published in Tasmania between 1910 and 2000. \ \ Using both qualitative...

Interactive visualisation techniques for data mining of satellite imagery

SJ Welch
Supervised classification of satellite imagery largely removes the user from the information extraction process. Visualisation is an often ignored means by which users may interactively explore the complex patterns and relationships in satellite imagery. Classification can be considered a 'hypothesis testing' form of analysis. Visual Data Mining allows for dynamic hypothesis generation, testing and revision based on a human user's perception. In this study Visual Data Mining was applied to the classification of satellite imagery....

Phytochemistry of Eucalyptus spp. and its role in insect-host-tree selection

HX Li
Leaf oils and waxes of 29 native Tasmanian Eucalyptus species were studied from primarily a taxonomic aspect and their effects on insect-plant selection were evaluated. E. nitens, an important introduced pulpwood species that is not indigenous to Tasmania was also investigated in detail. The chemical compositions of leaf oils and waxes of both juvenile and adult leaf samples of each species were examined by GC-MS. Results indicated that the distribution of both oil and wax...

Kudoa neurophila in striped trumpeter : identification, diagnostic development and histopathology

GW Grossel
Striped trumpeter, Latris lineata (Forster), are being experimentally cultured by the Tasmanian Aquaculture and Fisheries Institute (TAFI) at Taroona, Hobart, Tasmania, Australia. Fish that survive beyond 30 days develop nervous aberrations associated with a severe granulomatous meningoencephalomyelitis. The myxozoan parasite Pentacapsula neurophila was described as the parasite causing the disease in the striped trumpeter juveniles. Molecular Bayesian phylogenetic analysis using small subunit ribosomal DNA (ssu rDNA) gene sequence and the covariotide evolutionary model, has shown...

Professional Access Control

L de la Motte
Professional Access Control (PAC) is a self-administrating access control model for professional users which employs a peer review process and oversight by system administrators. It is characterised by the existence of ethical controls on the relationships between the users (those accessing data or granting access privileges to others) and data owners. Investigations revealed that the issue of availability was crucial to users in the hospital domain studied, and that to minimise the administrative burden on...

Littera pro uerbis: Epistolarity, Ethnography and the Author's Persona in Ovid's Epistulae ex Ponto

F Alexis
The aim of my thesis is to extend the current discussions of ethnography, epistolarity and the ancient persona, to the text of Ovid's Epistulae ex Ponto. It is a particularly appropriate text to extend the ideas of literary and cultural identity and epistolarity as the poems are written as letters by an urban Roman poet who is exiled to the end of the known world. His poems reveal, in the medium he knows best, the...

Leaving the war zone - fifty (three) ways to leave your lover: A feminist analysis of fifty-three women's pathways to leaving a male partner who assaulted them

S Patton
This study explored how women were able to leave a male partner who assaulted them, and the common critical success factors of leaving and establishing a new life for themselves and any children in their care.\ Conducted from a feminist standpoint, a qualitative exploration of 53 women's perceptions of being able to leave was undertaken, using a non-probability purposive sampling method and semi-structured, in-depth interviews.\ Applying a thematic analysis, the results indicated that women used...

The Trematode fauna of a brackish coastal lagoon in Tasmania

SJ Smith
Calvert's Lagoon, a land-locked, brackish lagoon on the south-east coast of Tasmania, Australia, serves as a focus for the life-cycles of a wide variety of digenetic trematodes. A gastropod, Coxiella badgerensis (Johnston), is the only molluscai inhabitant, and it is heavily infected by trematodes throughout the year. The incidence of primary trematode infections was found to vary seasonally, with a peak in autumn. Developmental stages of 17 species from 7 trematode families were recorded in...

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