DSM-IV AD/HD symptoms: Prevalence, gender and age differences, and construct validity of parent and teacher ratings of Malaysian children
- Authors: Hafetz, Nina
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Attention-deficit/hyperactivity disorder (AD/HD) is marked by deficits in attention, hyperactivity and impulsivity (American Psychiatric Association, 1994). The current DSM-IV conceptualisation of AD/HD as comprising of separate, but related, Inattention (IA) and Hyperactivity/Impulsivity (H/I) dimensions have been supported in confirmatory factor analytic (CFA) studies. Despite being one of the most extensively studied childhood disorder, there is a lack of research on AD/HD in non-western populations. Research on AD/HD in Asian countries, particularly, is limited. To date, no study has comprehensively investigated the characteristics of AD/HD in a Malaysian sample. The current study had 4 major aims. The first aim of the study was to investigate how the IA and H/I symptoms groups vary by age, gender, and age by gender interaction. The second aim of the study was to obtain prevalence rates of DSM-IV AD/HD and the three subtypes (i.e., Predominantly Inattentive Type, AD/HD-IA; Predominantly Hyperactive/Impulsive Type, AD/HD-H/I; and Combined Type, AD/HD-C) within this population. This was examined for boys and girls separately, and together. The third aim of the study was to investigate the internal validity of DSM-IV AD/HD using single source confirmatory factor analysis (CFA), while the fourth aim of the study was to examine trait, source and error variance of the AD/HD symptoms using the CFA multitrait (IA and H/I) by multisource (parent and teacher) approach (CFA MT-MS). All the CFA and CFA MT-MS analyses were conducted separately for boys and girls and used scores recoded via the binary method, as opposed to the ordinal scoring method. The sample consisted of 934 Malaysian schoolchildren aged 6-12 years (436 boys: mean age 8.86 years; and 498 girls: mean age 9.02 years) [...] There was more source than trait variance for parent rated H/I and teacher rated IA for girls. Unique to the current study is the use of binary as opposed to ordinal data to run the CFA and MTMS analysis. The implications of the findings for the conceptualisation, assessment, treatment, psychometric properties of AD/HD rating scales and the recognition of AD/HD in the Malaysian population are discussed. Suggestions for future research are offered.
- Description: Doctor of Psychology (Clinical)
- Authors: Hafetz, Nina
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Attention-deficit/hyperactivity disorder (AD/HD) is marked by deficits in attention, hyperactivity and impulsivity (American Psychiatric Association, 1994). The current DSM-IV conceptualisation of AD/HD as comprising of separate, but related, Inattention (IA) and Hyperactivity/Impulsivity (H/I) dimensions have been supported in confirmatory factor analytic (CFA) studies. Despite being one of the most extensively studied childhood disorder, there is a lack of research on AD/HD in non-western populations. Research on AD/HD in Asian countries, particularly, is limited. To date, no study has comprehensively investigated the characteristics of AD/HD in a Malaysian sample. The current study had 4 major aims. The first aim of the study was to investigate how the IA and H/I symptoms groups vary by age, gender, and age by gender interaction. The second aim of the study was to obtain prevalence rates of DSM-IV AD/HD and the three subtypes (i.e., Predominantly Inattentive Type, AD/HD-IA; Predominantly Hyperactive/Impulsive Type, AD/HD-H/I; and Combined Type, AD/HD-C) within this population. This was examined for boys and girls separately, and together. The third aim of the study was to investigate the internal validity of DSM-IV AD/HD using single source confirmatory factor analysis (CFA), while the fourth aim of the study was to examine trait, source and error variance of the AD/HD symptoms using the CFA multitrait (IA and H/I) by multisource (parent and teacher) approach (CFA MT-MS). All the CFA and CFA MT-MS analyses were conducted separately for boys and girls and used scores recoded via the binary method, as opposed to the ordinal scoring method. The sample consisted of 934 Malaysian schoolchildren aged 6-12 years (436 boys: mean age 8.86 years; and 498 girls: mean age 9.02 years) [...] There was more source than trait variance for parent rated H/I and teacher rated IA for girls. Unique to the current study is the use of binary as opposed to ordinal data to run the CFA and MTMS analysis. The implications of the findings for the conceptualisation, assessment, treatment, psychometric properties of AD/HD rating scales and the recognition of AD/HD in the Malaysian population are discussed. Suggestions for future research are offered.
- Description: Doctor of Psychology (Clinical)
Exploring risk-awareness as a cultural approach to safety : An ethnographic study of a contract maintenance environment
- Authors: Borys, David
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Safety culture has risen to prominence over the past two decades as a means by which organisations may enhance their safety performance. Safety culture may be conceptualised as an interpretive device that mediates between organisational safety rhetoric and safety programs on the one hand, and local workplace cultures on the other. More recently, risk-awareness has emerged as a cultural approach to safety. Front line workers are encouraged to become risk-aware through programs designed to prompt them to undertake mental or informal risk assessments before commencing work. The problem is that risk-awareness programs have not been the subject of systematic research and the impact of these programs on the culture of safety and the resultant level of risk is unknown. Therefore, this ethnographic study of two sites within a large contract maintenance organisation in Australia explored what impact risk-awareness programs have upon the culture of safety and the resultant level of risk. The researcher spent two months in the field and data was collected through participant observation, semistructured interviews and through a review of organisational documents. This study found that managers focused upon collecting the paperwork associated with the program as proof that workers had a safer workplace, whereas workers preferred to rely upon their common sense rather than the paperwork to keep them safe. As a consequence, the riskawareness program resulted in a culture of paperwork and varying levels of risk reduction because the paperwork associated with the program created an illusion of safety for managers as much as common sense did for workers. The results of this study have implications for safety culture, risk-awareness programs and for organisational learning. They also have implications for organisations wishing to improve their safety culture by encouraging risk-awareness in front-line workers.
- Description: Doctor of Philosophy
- Authors: Borys, David
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Safety culture has risen to prominence over the past two decades as a means by which organisations may enhance their safety performance. Safety culture may be conceptualised as an interpretive device that mediates between organisational safety rhetoric and safety programs on the one hand, and local workplace cultures on the other. More recently, risk-awareness has emerged as a cultural approach to safety. Front line workers are encouraged to become risk-aware through programs designed to prompt them to undertake mental or informal risk assessments before commencing work. The problem is that risk-awareness programs have not been the subject of systematic research and the impact of these programs on the culture of safety and the resultant level of risk is unknown. Therefore, this ethnographic study of two sites within a large contract maintenance organisation in Australia explored what impact risk-awareness programs have upon the culture of safety and the resultant level of risk. The researcher spent two months in the field and data was collected through participant observation, semistructured interviews and through a review of organisational documents. This study found that managers focused upon collecting the paperwork associated with the program as proof that workers had a safer workplace, whereas workers preferred to rely upon their common sense rather than the paperwork to keep them safe. As a consequence, the riskawareness program resulted in a culture of paperwork and varying levels of risk reduction because the paperwork associated with the program created an illusion of safety for managers as much as common sense did for workers. The results of this study have implications for safety culture, risk-awareness programs and for organisational learning. They also have implications for organisations wishing to improve their safety culture by encouraging risk-awareness in front-line workers.
- Description: Doctor of Philosophy
Multiculturalism : (re) intellectualising teaching
- Authors: Edmonds, George
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Doctor of Philosphy
- Authors: Edmonds, George
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Doctor of Philosphy
Optimal number and placement of network infrastructure in wireless networks
- Authors: Kouhbor, Shahnaz
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Wireless Local Area Networks (WLANs) have become a major success in telecommunications during the last few years, due to advantages such as mobility, flexibility, and easier maintenance. A device called an access point (AP) acts as a base station in WLAN for connecting a group of users to the network via radio signal. During the planning of such a network an important problem is to determine the optimal number of these devices and their placement/distribution so that coverage, capacity, and physical security are maximised at minimum cost. In this thesis we are using continuous optimisation techniques to optimise the number of APs and their distribution while cost of deployment is reduced and physical security of the network is enhanced. To find the number and placement of APs, we developed a multi-objective functions model based on path losses and power for free space environments. The two functions in the models are combined by using a balancing parameter. Since it is recognised that some of the objectives can be handled one at a time, in another approach, we followed a step-by-step procedure. We start with a novel optimisation model based on path losses for indoor environments including obstacles. Cost of deployment is saved by finding the minimum number of APs ensuring that the path loss at each test point/receiver is below the given maximum path loss. Next, the physical security of the network is enhanced by placing the APs far from places accessible to unauthorised users to reduce the risk of intrusion into the network. This is achieved in the framework of the model by introducing potential unauthorised users in unauthorised areas for whom coverage is minimised. Due to the presence of obstacles in indoor buildings, the path loss function is discontinuous. Therefore, the objective functions are very complicated and most of the existing optimisation algorithms cannot be applied to solve the problem. We use a global optimisation algorithm that is not used by other researchers to solve the same problem. To validate the accuracy of the optimisation model and performance of the numerical methods, we run tests on several indoor buildings and use wide range of WLAN parameters. The results demonstrate the quality of our model and algorithm. Based on the proposed model and algorithm, we developed a software to assist the network designers in planning wireless LANs.
- Description: Doctor of Philosophy
- Authors: Kouhbor, Shahnaz
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Wireless Local Area Networks (WLANs) have become a major success in telecommunications during the last few years, due to advantages such as mobility, flexibility, and easier maintenance. A device called an access point (AP) acts as a base station in WLAN for connecting a group of users to the network via radio signal. During the planning of such a network an important problem is to determine the optimal number of these devices and their placement/distribution so that coverage, capacity, and physical security are maximised at minimum cost. In this thesis we are using continuous optimisation techniques to optimise the number of APs and their distribution while cost of deployment is reduced and physical security of the network is enhanced. To find the number and placement of APs, we developed a multi-objective functions model based on path losses and power for free space environments. The two functions in the models are combined by using a balancing parameter. Since it is recognised that some of the objectives can be handled one at a time, in another approach, we followed a step-by-step procedure. We start with a novel optimisation model based on path losses for indoor environments including obstacles. Cost of deployment is saved by finding the minimum number of APs ensuring that the path loss at each test point/receiver is below the given maximum path loss. Next, the physical security of the network is enhanced by placing the APs far from places accessible to unauthorised users to reduce the risk of intrusion into the network. This is achieved in the framework of the model by introducing potential unauthorised users in unauthorised areas for whom coverage is minimised. Due to the presence of obstacles in indoor buildings, the path loss function is discontinuous. Therefore, the objective functions are very complicated and most of the existing optimisation algorithms cannot be applied to solve the problem. We use a global optimisation algorithm that is not used by other researchers to solve the same problem. To validate the accuracy of the optimisation model and performance of the numerical methods, we run tests on several indoor buildings and use wide range of WLAN parameters. The results demonstrate the quality of our model and algorithm. Based on the proposed model and algorithm, we developed a software to assist the network designers in planning wireless LANs.
- Description: Doctor of Philosophy
Optimization based clustering and classification algorithms in analysis of microarray gene expression data sets
- Authors: Mardaneh, Karim
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Doctor of Philosophy
- Description: Bioinformatics and computational biology are relatively new areas that involve the use of different techniques including computer science, informatics, biochemistry, applied math and etc., to solve biological problems. In recent years the development of new molecular genetics technologies, such as DNA microarrays led to the simultaneous measurement of expression levels of thousands and even tens of thousands of genes. Microarray gene expression technology has facilitated the study of genomic structure and investigation of biological systems. Numerical output of this technology is shown as microarray gene expression data sets. These data sets contain a very large number of genes and a relatively small number of samples and their precise analysis requires a robust and suitable computer software. Due to this, only a few existing algorithms are applicable to them, so more efficient methods for solving clustering, gene selection and classification problems of gene expression data sets are required and those methods need to be computationally applicable and less expensive. The aim of this thesis is to develop new algorithms for solving clustering, gene selection and data classification problems on gene expression data sets. Clustering in gene expression data sets is a challenging problem. The increasing use of DNA microarray-based tumour gene expression profiles for cancer diagnosis requires more efficient methods to solve clustering problems of these profiles. Different algorithms for clustering of genes have been proposed, however few algorithms can be applied to the clustering of samples. k-means algorithm, among very few clustering algorithms is applicable to microarray gene expression data sets, however these are not efficient for solving clustering problems when the number of genes is thousands and this algorithm is very sensitive to the choice of a starting point. Additionally, when the number of clusters is relatively large, this algorithm gives local minima which can differ significantly from the global solution. Over the last several years different approaches have been proposed to improve global ii Abstract Abstract search properties of k-means algorithm. One of them is the global k-means algorithm, however this algorithm is not efficient when data are sparse. In this thesis we developed a new version of the global k-means algorithm, the modified global k-means algorithm which is effective for solving clustering problems in gene expression data sets. In a microarray gene expression data set, in many cases only a small fraction of genes are informative whereas most of them are non-informative and make noise. Therefore the development of gene selection algorithms that allow us to remove as many non-informative genes as possible is very important. In this thesis we developed a new overlapping gene selection algorithm. This algorithm is based on calculating overlaps of different genes. It considerably reduces the number of genes and is efficient in finding a subset of informative genes. Over the last decade different approaches have been proposed to solve supervised data classification problems in gene expression data sets. In this thesis we developed a new approach which is based on the so-called max-min separability and is compared with the other approaches. The max-min separability algorithm is an equivalent of piecewise linear separability. An incremental algorithm is presented to compute piecewise linear functions separating two sets. This algorithm is applied along with a special gene selection algorithm. In this thesis, all new algorithms have been tested on 10 publicly available gene expression data sets and our numerical results demonstrate the efficiency of the new algorithms that were developed in the framework of this research
- Authors: Mardaneh, Karim
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Doctor of Philosophy
- Description: Bioinformatics and computational biology are relatively new areas that involve the use of different techniques including computer science, informatics, biochemistry, applied math and etc., to solve biological problems. In recent years the development of new molecular genetics technologies, such as DNA microarrays led to the simultaneous measurement of expression levels of thousands and even tens of thousands of genes. Microarray gene expression technology has facilitated the study of genomic structure and investigation of biological systems. Numerical output of this technology is shown as microarray gene expression data sets. These data sets contain a very large number of genes and a relatively small number of samples and their precise analysis requires a robust and suitable computer software. Due to this, only a few existing algorithms are applicable to them, so more efficient methods for solving clustering, gene selection and classification problems of gene expression data sets are required and those methods need to be computationally applicable and less expensive. The aim of this thesis is to develop new algorithms for solving clustering, gene selection and data classification problems on gene expression data sets. Clustering in gene expression data sets is a challenging problem. The increasing use of DNA microarray-based tumour gene expression profiles for cancer diagnosis requires more efficient methods to solve clustering problems of these profiles. Different algorithms for clustering of genes have been proposed, however few algorithms can be applied to the clustering of samples. k-means algorithm, among very few clustering algorithms is applicable to microarray gene expression data sets, however these are not efficient for solving clustering problems when the number of genes is thousands and this algorithm is very sensitive to the choice of a starting point. Additionally, when the number of clusters is relatively large, this algorithm gives local minima which can differ significantly from the global solution. Over the last several years different approaches have been proposed to improve global ii Abstract Abstract search properties of k-means algorithm. One of them is the global k-means algorithm, however this algorithm is not efficient when data are sparse. In this thesis we developed a new version of the global k-means algorithm, the modified global k-means algorithm which is effective for solving clustering problems in gene expression data sets. In a microarray gene expression data set, in many cases only a small fraction of genes are informative whereas most of them are non-informative and make noise. Therefore the development of gene selection algorithms that allow us to remove as many non-informative genes as possible is very important. In this thesis we developed a new overlapping gene selection algorithm. This algorithm is based on calculating overlaps of different genes. It considerably reduces the number of genes and is efficient in finding a subset of informative genes. Over the last decade different approaches have been proposed to solve supervised data classification problems in gene expression data sets. In this thesis we developed a new approach which is based on the so-called max-min separability and is compared with the other approaches. The max-min separability algorithm is an equivalent of piecewise linear separability. An incremental algorithm is presented to compute piecewise linear functions separating two sets. This algorithm is applied along with a special gene selection algorithm. In this thesis, all new algorithms have been tested on 10 publicly available gene expression data sets and our numerical results demonstrate the efficiency of the new algorithms that were developed in the framework of this research
Professional help-seeking among women : development and testing of a model
- Authors: Vanderhorst, Renee
- Date: 2007
- Type: Text , Thesis , Doctorate
- Full Text:
- Description: Professional Doctorate of Psychology (Clinical)
- Authors: Vanderhorst, Renee
- Date: 2007
- Type: Text , Thesis , Doctorate
- Full Text:
- Description: Professional Doctorate of Psychology (Clinical)
Spiritual Art : evoking the numinous using a 3D computer game engine
- Authors: Nelson, Christopher
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The Seven Valleys is an interactive 3D installation based artwork inspired by mystical writings of the Bahá'í Faith. Created as a modification of the firstperson shooter Unreal Tournament 2003 (Epic, 2003) it subverts the original paradigm of the game to create an experience of the numinous, which in spirit, is diametrically opposed to the original intent of the gameplay design. This artwork presents an exploration of, and allusion to, the often subtle and illusive concepts found in the sacred treatise The Seven Valleys (Bahá'u'lláh, 1991) in which the user engages in an experiential journey through the work. The user is faced with conditions and situations that provide motivation to question, explore and attempt to fathom the abstract sense of the numinous. Each of The Seven Valleys contains its own individual mysteries while at the same time contributing its part to the telling of a collective story.
- Description: Master of Arts
- Authors: Nelson, Christopher
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The Seven Valleys is an interactive 3D installation based artwork inspired by mystical writings of the Bahá'í Faith. Created as a modification of the firstperson shooter Unreal Tournament 2003 (Epic, 2003) it subverts the original paradigm of the game to create an experience of the numinous, which in spirit, is diametrically opposed to the original intent of the gameplay design. This artwork presents an exploration of, and allusion to, the often subtle and illusive concepts found in the sacred treatise The Seven Valleys (Bahá'u'lláh, 1991) in which the user engages in an experiential journey through the work. The user is faced with conditions and situations that provide motivation to question, explore and attempt to fathom the abstract sense of the numinous. Each of The Seven Valleys contains its own individual mysteries while at the same time contributing its part to the telling of a collective story.
- Description: Master of Arts
Stock market predictions based on quantified intermarket influences
- Authors: Tilakaratne, Chandima
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: This research investigated the feasibility and capability of neural network-based approaches for predicting the direction of the Australian Stock market index (the target market). It includes several aspects: univariate feature selection from the historical time series of the target market, inter-market analysis for finding the most relevant influential markets, investigations of the effect of time cycles on the target market and the discovery of the optimal neural network architectures. Previous research on US stock markets and other international markets have shown that the neural network approach is one of most powerful techniques for predicting stock market behaviour. Neural networks are capable of capturing the non-linear stochastic and chaotic patterns in the stock market time series data. This study discovered that the relative return series of the Open, High, Low and Close prices of the target market, show 6-day cycles during the studied period of about 14 years. Multi-layer feedforward neural networks trained with a backpropagation algorithm were used for the experiments. Two major testing methods: testing with randomly selected test data and forward testing, were examined and compared. The best neural network developed in this study has achieved 87%, 81% 83% and 81% accuracy respectively in predicting the next-day direction of the relative return of the Open, High, Low and Close prices of the target market. The architecture of this network consists of 33 input features, one hidden layer with 3 neurons and 4 output neurons. The best input features set includes the relative returns from 1 to 6 days in the past of the Open, High, Low and Close prices of the target market, the day of the week, and the previous day’s relative return of the Close prices of the US S&P 500 Index, US Dow Jones Industrial Average Index, US Gold/Silver Index, and the US Oil Index.
- Description: Doctor of Philosophy
- Authors: Tilakaratne, Chandima
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: This research investigated the feasibility and capability of neural network-based approaches for predicting the direction of the Australian Stock market index (the target market). It includes several aspects: univariate feature selection from the historical time series of the target market, inter-market analysis for finding the most relevant influential markets, investigations of the effect of time cycles on the target market and the discovery of the optimal neural network architectures. Previous research on US stock markets and other international markets have shown that the neural network approach is one of most powerful techniques for predicting stock market behaviour. Neural networks are capable of capturing the non-linear stochastic and chaotic patterns in the stock market time series data. This study discovered that the relative return series of the Open, High, Low and Close prices of the target market, show 6-day cycles during the studied period of about 14 years. Multi-layer feedforward neural networks trained with a backpropagation algorithm were used for the experiments. Two major testing methods: testing with randomly selected test data and forward testing, were examined and compared. The best neural network developed in this study has achieved 87%, 81% 83% and 81% accuracy respectively in predicting the next-day direction of the relative return of the Open, High, Low and Close prices of the target market. The architecture of this network consists of 33 input features, one hidden layer with 3 neurons and 4 output neurons. The best input features set includes the relative returns from 1 to 6 days in the past of the Open, High, Low and Close prices of the target market, the day of the week, and the previous day’s relative return of the Close prices of the US S&P 500 Index, US Dow Jones Industrial Average Index, US Gold/Silver Index, and the US Oil Index.
- Description: Doctor of Philosophy
Structural properties and labeling of graphs
- Dafik
- Authors: Dafik
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: The complexity in building massive scale parallel processing systems has re- sulted in a growing interest in the study of interconnection networks design. Network design affects the performance, cost, scalability, and availability of parallel computers. Therefore, discovering a good structure of the network is one of the basic issues. From modeling point of view, the structure of networks can be naturally stud- ied in terms of graph theory. Several common desirable features of networks, such as large number of processing elements, good throughput, short data com- munication delay, modularity, good fault tolerance and diameter vulnerability correspond to properties of the underlying graphs of networks, including large number of vertices, small diameter, high connectivity and overall balance (or regularity) of the graph or digraph. The first part of this thesis deals with the issue of interconnection networks ad- dressing system. From graph theory point of view, this issue is mainly related to a graph labeling. We investigate a special family of graph labeling, namely antimagic labeling of a class of disconnected graphs. We present new results in super (a; d)-edge antimagic total labeling for disjoint union of multiple copies of special families of graphs. The second part of this thesis deals with the issue of regularity of digraphs with the number of vertices close to the upper bound, called the Moore bound, which is unobtainable for most values of out-degree and diameter. Regularity of the underlying graph of a network is often considered to be essential since the flow of messages and exchange of data between processing elements will be on average faster if there is a similar number of interconnections coming in and going out of each processing element. This means that the in-degree and out-degree of each processing element must be the same or almost the same. Our new results show that digraphs of order two less than Moore bound are either diregular or almost diregular.
- Description: Doctor of Philosophy
- Authors: Dafik
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: The complexity in building massive scale parallel processing systems has re- sulted in a growing interest in the study of interconnection networks design. Network design affects the performance, cost, scalability, and availability of parallel computers. Therefore, discovering a good structure of the network is one of the basic issues. From modeling point of view, the structure of networks can be naturally stud- ied in terms of graph theory. Several common desirable features of networks, such as large number of processing elements, good throughput, short data com- munication delay, modularity, good fault tolerance and diameter vulnerability correspond to properties of the underlying graphs of networks, including large number of vertices, small diameter, high connectivity and overall balance (or regularity) of the graph or digraph. The first part of this thesis deals with the issue of interconnection networks ad- dressing system. From graph theory point of view, this issue is mainly related to a graph labeling. We investigate a special family of graph labeling, namely antimagic labeling of a class of disconnected graphs. We present new results in super (a; d)-edge antimagic total labeling for disjoint union of multiple copies of special families of graphs. The second part of this thesis deals with the issue of regularity of digraphs with the number of vertices close to the upper bound, called the Moore bound, which is unobtainable for most values of out-degree and diameter. Regularity of the underlying graph of a network is often considered to be essential since the flow of messages and exchange of data between processing elements will be on average faster if there is a similar number of interconnections coming in and going out of each processing element. This means that the in-degree and out-degree of each processing element must be the same or almost the same. Our new results show that digraphs of order two less than Moore bound are either diregular or almost diregular.
- Description: Doctor of Philosophy
The causes and prevention of airline baggage handler back injuries : Safe designs required where behaviour and administrative solutions have had limited effect
- Authors: Dell, Geoff
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: "Back injuries have consistently been the most common types of injuries suffered by people at work. They have been a significant worker injury problem in most, if not all, industrialised countries for many years and manual handling has long been established as a significant task related back injury causal factor.[...] This research project established that the manufacturers of the jet airlines used by the airlines in this study had not previously been acquainted with the issue of baggage handler back injuries.[...] This study also canvassed the opinion of airline safety professionals and airline baggage handlers concerning baggage handling tasks and working environment related causal factors. [...] A major focus of this research project was also to measure the effect of ACE and Sliding Carpet, two commercially available retro-fit baggage systems, on the risk of back injuries to baggage handlers stacking baggage within Boeing B737 narrow-body aircraft."
- Description: Doctor of Philosophy
- Authors: Dell, Geoff
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: "Back injuries have consistently been the most common types of injuries suffered by people at work. They have been a significant worker injury problem in most, if not all, industrialised countries for many years and manual handling has long been established as a significant task related back injury causal factor.[...] This research project established that the manufacturers of the jet airlines used by the airlines in this study had not previously been acquainted with the issue of baggage handler back injuries.[...] This study also canvassed the opinion of airline safety professionals and airline baggage handlers concerning baggage handling tasks and working environment related causal factors. [...] A major focus of this research project was also to measure the effect of ACE and Sliding Carpet, two commercially available retro-fit baggage systems, on the risk of back injuries to baggage handlers stacking baggage within Boeing B737 narrow-body aircraft."
- Description: Doctor of Philosophy
The comprehension of emotions in narrative texts : The role of embodied knowledge
- Authors: Marmolejo-Ramos, Fernando
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "This work explores how current embodied theories of cognition can account for the comprehension of narrative texts. Theoretically, this thesis develops a framework for the study of narrative text comprehension by linking current advances in embodied theories of cognition, discourse processing, and neurosciences. Experimentally, two experiments are reported in which participants were required to read passages of text implying emotional states. The coherence of critical sentences in relation to the preceding text was manipulated in terms of both the emotional adjectives used and the sensory-motor component. In the first experiment, three tasks were used to index the effect of the manipulations on the critical sentences. The first was an on-line naming task in which response times to name emotional labels which matched the implied emotional state of the texts were recorded. [...] The second experiment used backward masking in the naming task with the aim of providing a more sensitive index of the effect of the text manipulations on on-line processing."
- Description: Master of Applied Science by research
- Authors: Marmolejo-Ramos, Fernando
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "This work explores how current embodied theories of cognition can account for the comprehension of narrative texts. Theoretically, this thesis develops a framework for the study of narrative text comprehension by linking current advances in embodied theories of cognition, discourse processing, and neurosciences. Experimentally, two experiments are reported in which participants were required to read passages of text implying emotional states. The coherence of critical sentences in relation to the preceding text was manipulated in terms of both the emotional adjectives used and the sensory-motor component. In the first experiment, three tasks were used to index the effect of the manipulations on the critical sentences. The first was an on-line naming task in which response times to name emotional labels which matched the implied emotional state of the texts were recorded. [...] The second experiment used backward masking in the naming task with the aim of providing a more sensitive index of the effect of the text manipulations on on-line processing."
- Description: Master of Applied Science by research
The landscape of my life
- Authors: Woodfield, Linda
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The investigations surrounding the topic ‘The Landscape of My Life’ questions whether it is possible for a landscape to delineate the way in which we live our lives. For a period of thirty-two years my home has been a historic rural property comprising a dwelling and outbuildings on twenty acres of undulating countryside at Carngham. The work conveys the story of my life at this locale and pursues the motives behind the purchase of the country property, the experiences and remembrances that exist from this period of time and reflects upon the implications of a way of life over the last three decades. While considering the impact that a landscape can have on individual lives, it became important to consolidate the insights that surfaced for me with respect to my own life and works and compare it with that of other selected landscape artists. This comparison took into account personal and family backgrounds, artistic techniques, relationships with the land and the motivations that resulted in the depiction of particular landscapes. The result of these observations led to a consideration that not only can a landscape define the way in which we live our lives but, also identifies an affinity between human beings and the environment.
- Description: Master of Arts
- Authors: Woodfield, Linda
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The investigations surrounding the topic ‘The Landscape of My Life’ questions whether it is possible for a landscape to delineate the way in which we live our lives. For a period of thirty-two years my home has been a historic rural property comprising a dwelling and outbuildings on twenty acres of undulating countryside at Carngham. The work conveys the story of my life at this locale and pursues the motives behind the purchase of the country property, the experiences and remembrances that exist from this period of time and reflects upon the implications of a way of life over the last three decades. While considering the impact that a landscape can have on individual lives, it became important to consolidate the insights that surfaced for me with respect to my own life and works and compare it with that of other selected landscape artists. This comparison took into account personal and family backgrounds, artistic techniques, relationships with the land and the motivations that resulted in the depiction of particular landscapes. The result of these observations led to a consideration that not only can a landscape define the way in which we live our lives but, also identifies an affinity between human beings and the environment.
- Description: Master of Arts
The role of dissonance in the experience of mothering
- Authors: Wing-Quay, Vanessa
- Date: 2007
- Type: Text , Thesis , Doctorate
- Full Text:
- Description: Maternal dissonance, a specific type of maternal cognition, has been researched little in terms of its importance for the mother. This lack of research has occurred despite the fact that general social discourse assumes the vital importance of dissonant cognitions, based on the notion of the 'perfect mother' image. In the research reported here, maternal dissonance was studies in relation to maternal well-being.
- Description: Professional Doctorate in Psychology
- Authors: Wing-Quay, Vanessa
- Date: 2007
- Type: Text , Thesis , Doctorate
- Full Text:
- Description: Maternal dissonance, a specific type of maternal cognition, has been researched little in terms of its importance for the mother. This lack of research has occurred despite the fact that general social discourse assumes the vital importance of dissonant cognitions, based on the notion of the 'perfect mother' image. In the research reported here, maternal dissonance was studies in relation to maternal well-being.
- Description: Professional Doctorate in Psychology
The Sexual beliefs, attitudes and script of men convicted of sexual offences against children : An empirical investigation
- Authors: Owen, Karen
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Community concern about sexual offending places continued pressure on correctional services to refine treatment and reduce re-offending. While cognitive processes have been identified as a key element in the development and maintenance of sexual offending, more research on the precise nature of these processes is required. The current study, based on Ward and Siegert’s Pathways Model, involved 100 male offenders of various types: 25 intra – familial sex offenders against children, 25 extra-familial sex offenders against children, 25 sex offenders who chose adult victims, and 25 convicted of non-sexual offences. There was also a control group of 25 non-offenders. The quantitative data, derived from a series of questionnaires concerning childhood and sexual experiences, provided evidence that the two types of child sex offender differed from the other groups with respect to their expectations of sexual behaviour among children, their experience of sexual abuse and neglect as children themselves, and, paradoxically, their current high self-esteem. In addition, scripts relating to hypothetical consenting adult sexual relations and sexual contact with a child were collected from the 50 sex offenders against children. The script content suggested that, compared with intra - familial offenders, extra-familial offenders had notably unrealistic, naïve and romanticised scripts for adult relationships and more sophisticated scripts for offences against children. The latter suggested that scripts might serve as a mediating function in offending behaviour and that offenders acquired a degree of task domain expertise. Despite some inherent problems undertaking research with the sex-offender population, the findings confirmed that sex-offenders do not constitute a homogenous group and that the pathways model offers a unique perspective on how males become and develop their capacity as sex-offenders, how they sustain a positive view of themselves, and how they continue to commit offences. Finally, the model was considered in terms of its capacity to suggest ways to better target treatment efforts to specific groups of sexual offenders to further reduce their rate of recidivism
- Description: Doctor of Psychology (Clinical)
- Authors: Owen, Karen
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Community concern about sexual offending places continued pressure on correctional services to refine treatment and reduce re-offending. While cognitive processes have been identified as a key element in the development and maintenance of sexual offending, more research on the precise nature of these processes is required. The current study, based on Ward and Siegert’s Pathways Model, involved 100 male offenders of various types: 25 intra – familial sex offenders against children, 25 extra-familial sex offenders against children, 25 sex offenders who chose adult victims, and 25 convicted of non-sexual offences. There was also a control group of 25 non-offenders. The quantitative data, derived from a series of questionnaires concerning childhood and sexual experiences, provided evidence that the two types of child sex offender differed from the other groups with respect to their expectations of sexual behaviour among children, their experience of sexual abuse and neglect as children themselves, and, paradoxically, their current high self-esteem. In addition, scripts relating to hypothetical consenting adult sexual relations and sexual contact with a child were collected from the 50 sex offenders against children. The script content suggested that, compared with intra - familial offenders, extra-familial offenders had notably unrealistic, naïve and romanticised scripts for adult relationships and more sophisticated scripts for offences against children. The latter suggested that scripts might serve as a mediating function in offending behaviour and that offenders acquired a degree of task domain expertise. Despite some inherent problems undertaking research with the sex-offender population, the findings confirmed that sex-offenders do not constitute a homogenous group and that the pathways model offers a unique perspective on how males become and develop their capacity as sex-offenders, how they sustain a positive view of themselves, and how they continue to commit offences. Finally, the model was considered in terms of its capacity to suggest ways to better target treatment efforts to specific groups of sexual offenders to further reduce their rate of recidivism
- Description: Doctor of Psychology (Clinical)
The sun-moths (lepidoptera: castniidae) of Victoria, with a detailed study of the pale sun-moth (Synemon selene klug, 1850)
- Authors: Douglas, Fabian
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The sun-moths (family Castniidae) are a distinctive group of monocot-feeding diurnal Lepidoptera that contains a high proportion of threatened species worldwide. Seven of the eight Victorian Synemon species are considered as threatened. This study has determined through extensive fieldwork that most of these species are now restricted to very small remnants of their particular habitats. These findings have been integrated into a review of the current distribution, biology and habitat requirements of all the Victorian species. This has enabled recommendations for their long-term conservation and management to be made. Special attention was paid to the Pale Sun-moth (Synemon selene Klug, 1850) because it appeared to be nationally endangered and without a government strategy for its conservation. Also, there was strong circumstantial evidence of complete parthenogenesis within all of its Victorian populations. The Victorian occurrences are shown to be parthenogenetic, although specimens of both sexes are known from a ?now-extinct population near Two Wells, South Australia. It was also established that these parthenogenetic populations include five distinct morphs, two or three of which occur sympatrically at four localities in the Wimmera area. Parthenogenetic populations of these morphs cannot interbreed, this potentially restricting their genetic diversity. The extent of genetic diversity was examined with all parthenogenetic Victorian morphs of S. selene. DNA sequencing of 1515 bp of the COI gene revealed a maximum divergence level of 12 bp between some of the morphs and 1 to 2 bp within some morphs. This level of genetic diversity implies that these morphs have continued to evolve in the absence of males through time. This study has highlighted the special academic interest of S. selene and the urgent need for its adequate conservation. Some important directions for future research on the species are also discussed.
- Description: Master of Applied Science
- Authors: Douglas, Fabian
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: The sun-moths (family Castniidae) are a distinctive group of monocot-feeding diurnal Lepidoptera that contains a high proportion of threatened species worldwide. Seven of the eight Victorian Synemon species are considered as threatened. This study has determined through extensive fieldwork that most of these species are now restricted to very small remnants of their particular habitats. These findings have been integrated into a review of the current distribution, biology and habitat requirements of all the Victorian species. This has enabled recommendations for their long-term conservation and management to be made. Special attention was paid to the Pale Sun-moth (Synemon selene Klug, 1850) because it appeared to be nationally endangered and without a government strategy for its conservation. Also, there was strong circumstantial evidence of complete parthenogenesis within all of its Victorian populations. The Victorian occurrences are shown to be parthenogenetic, although specimens of both sexes are known from a ?now-extinct population near Two Wells, South Australia. It was also established that these parthenogenetic populations include five distinct morphs, two or three of which occur sympatrically at four localities in the Wimmera area. Parthenogenetic populations of these morphs cannot interbreed, this potentially restricting their genetic diversity. The extent of genetic diversity was examined with all parthenogenetic Victorian morphs of S. selene. DNA sequencing of 1515 bp of the COI gene revealed a maximum divergence level of 12 bp between some of the morphs and 1 to 2 bp within some morphs. This level of genetic diversity implies that these morphs have continued to evolve in the absence of males through time. This study has highlighted the special academic interest of S. selene and the urgent need for its adequate conservation. Some important directions for future research on the species are also discussed.
- Description: Master of Applied Science
Vessels for miracles : a tangible expression of an unwillingness to disallow belief
- Authors: O'Loughlin, John
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "Through a review of the art of late antiquity and early Christianity, the study examines the nature of, and tension between, superstion and belief. It debates the implicit question 'is all religion superstition?' in an attempt to provide a sound basis for the presentation of reasons for my personal unwilingness to 'disallow belief' in the mysteries of the Faith, despite doubts on their content."
- Description: Master of Arts (Visual Arts)
- Authors: O'Loughlin, John
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "Through a review of the art of late antiquity and early Christianity, the study examines the nature of, and tension between, superstion and belief. It debates the implicit question 'is all religion superstition?' in an attempt to provide a sound basis for the presentation of reasons for my personal unwilingness to 'disallow belief' in the mysteries of the Faith, despite doubts on their content."
- Description: Master of Arts (Visual Arts)
Window on an era : Geelong : a post-industrial city
- Authors: McNiece, Kelly
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "Non-economical industrial sites are being demolished in Geelong, making way for alternative economic development. Whilst progress is inevitable, I question the wisdom of short-term financial gain over long-term loss of identity. The association of industrial buildings with the concept of cultural heritage, art and architecture does not seem so incongrous in other parts of the world."--leaf 2.
- Description: Master of Arts (Visual Arts)
- Authors: McNiece, Kelly
- Date: 2007
- Type: Text , Thesis , Masters
- Full Text:
- Description: "Non-economical industrial sites are being demolished in Geelong, making way for alternative economic development. Whilst progress is inevitable, I question the wisdom of short-term financial gain over long-term loss of identity. The association of industrial buildings with the concept of cultural heritage, art and architecture does not seem so incongrous in other parts of the world."--leaf 2.
- Description: Master of Arts (Visual Arts)
Work/life balance through a critical ‘gender lens’ : A cross-country comparison of parental leave provisions and take-up in Australia and Sweden
- Authors: Zacharias, Nadine
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Work/life balance researchers have documented the low take-up rates of corporate work/life balance policies at the same time as there are reports of persistent work/life pressures. This research aims to provide more comprehensive explanations of the phenomenon of low policy take-up than those currently available in the work/life balance literature which focus on organisational and individual factors. The research project is based on a critical review of the work/life balance literature which focuses on organisational solutions and starts from the assumption that the organisational approach to researching and addressing work/life conflicts is inherently limited, mainly because it does not theorise gender as a social structure and does not take into consideration the social and political context in which work/life arrangements are negotiated but focuses, instead, on individual employees and organisations. I integrated my critical review of the organisational work/life balance literature with concepts in the feminist literature, most importantly the gendered public/private divide, to create an explicit ‘gender lens’ which guides the interpretations of my findings. I applied this gender lens to Habermas’ model of societal evolution to operationalise it as an analytical tool for this research. From this theoretical basis, I designed a comparative research project, using Australia and Sweden as country case studies, which compares the approaches to work/life balance in the two countries. The focus of the analysis is on parental leave as one important example of work/life balance policies. The data for this research includes the parental leave legislation, public documents released by governments and associated bodies as well as national surveys on the take-up of parental leave provisions in both countries. This material is analysed in the light of the conceptual framework. [...]
- Description: Doctor of Philosophy
- Authors: Zacharias, Nadine
- Date: 2007
- Type: Text , Thesis , PhD
- Full Text:
- Description: Work/life balance researchers have documented the low take-up rates of corporate work/life balance policies at the same time as there are reports of persistent work/life pressures. This research aims to provide more comprehensive explanations of the phenomenon of low policy take-up than those currently available in the work/life balance literature which focus on organisational and individual factors. The research project is based on a critical review of the work/life balance literature which focuses on organisational solutions and starts from the assumption that the organisational approach to researching and addressing work/life conflicts is inherently limited, mainly because it does not theorise gender as a social structure and does not take into consideration the social and political context in which work/life arrangements are negotiated but focuses, instead, on individual employees and organisations. I integrated my critical review of the organisational work/life balance literature with concepts in the feminist literature, most importantly the gendered public/private divide, to create an explicit ‘gender lens’ which guides the interpretations of my findings. I applied this gender lens to Habermas’ model of societal evolution to operationalise it as an analytical tool for this research. From this theoretical basis, I designed a comparative research project, using Australia and Sweden as country case studies, which compares the approaches to work/life balance in the two countries. The focus of the analysis is on parental leave as one important example of work/life balance policies. The data for this research includes the parental leave legislation, public documents released by governments and associated bodies as well as national surveys on the take-up of parental leave provisions in both countries. This material is analysed in the light of the conceptual framework. [...]
- Description: Doctor of Philosophy
'And for harmony most ardently we long' : Musical life in Ballarat, 1851-1871
- Authors: Doggett, Anne
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: "The study examines two decades in the musical life of Ballarat, a regional city in south-eastern Australia. Beginning at the time of the 1851 gold rush, it covers the period in which Ballarat grew from a rough mining camp to an established city with a socially and ethnically diverse population of over 40,000 people. The thesis pursues the aim of looking at the music practices of the community in ways that will further our understanding of the significance of music in the lives of the people."--Abstract.
- Description: Doctor of Philosphy
- Authors: Doggett, Anne
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: "The study examines two decades in the musical life of Ballarat, a regional city in south-eastern Australia. Beginning at the time of the 1851 gold rush, it covers the period in which Ballarat grew from a rough mining camp to an established city with a socially and ethnically diverse population of over 40,000 people. The thesis pursues the aim of looking at the music practices of the community in ways that will further our understanding of the significance of music in the lives of the people."--Abstract.
- Description: Doctor of Philosphy
A comprehensive profile of elite tennis and strategies to enhance match play performance
- Authors: Hornery, Daniel
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: "This dissertation illustrates an interdisciplinary sport science approach to further understand the interaction between physiology and performance in tennis. An integral theme throughout the experimental phases was the emphasis on obtaining information from actual competitive scenarios or settings that simulated a match environment. [...] This study extended the work of similar investigations through the multifaceted methods in which performance was quantified. Overall the thesis provides unique insight into the physiological demands of professional tournament tennis and the constraints these impose on performance. Furthermore, evidence was accrued to support some of the common preparatory and in-match behaviours used by players to enhance performance."
- Description: Doctor of Philosophy
- Authors: Hornery, Daniel
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: "This dissertation illustrates an interdisciplinary sport science approach to further understand the interaction between physiology and performance in tennis. An integral theme throughout the experimental phases was the emphasis on obtaining information from actual competitive scenarios or settings that simulated a match environment. [...] This study extended the work of similar investigations through the multifaceted methods in which performance was quantified. Overall the thesis provides unique insight into the physiological demands of professional tournament tennis and the constraints these impose on performance. Furthermore, evidence was accrued to support some of the common preparatory and in-match behaviours used by players to enhance performance."
- Description: Doctor of Philosophy