Learning from large data : bias, variance, sampling, and learning curves

One of the fundamental machine learning tasks is that of predictive classification. Given that organisations collect an ever increasing amount of data, predictive classification methods must be able to effectively and efficiently handle large amounts of data. However, it is understood that present requirements push existing algorithms to, and sometimes beyond, their limits since many classification prediction algorithms were designed when currently common data set sizes were beyond imagination. This has led to a significant amount of research into ways of making classification learning algorithms more effective and efficient. Although substantial progress has been made, a number of key questions have not been answered. This dissertation investigates two of these key questions. The first is whether different types of algorithms to those currently employed are required when using large data sets. This is answered by analysis of the way in which the bias plus variance decomposition of predictive classification error changes as training set size is increased. Experiments find that larger training sets require different types of algorithms to those currently used. Some insight into the characteristics of suitable algorithms is provided, and this may provide some direction for the development of future classification prediction algorithms which are specifically designed for use with large data sets. The second question investigated is that of the role of sampling in machine learning with large data sets. Sampling has long been used as a means of avoiding the need to scale up algorithms to suit the size of the data set by scaling down the size of the data sets to suit the algorithm. However, the costs of performing sampling have not been widely explored. Two popular sampling methods are compared with learning from all available data in terms of predictive accuracy, model complexity, and execution time. The comparison shows that sub-sampling generally products models with accuracy close to, and sometimes greater than, that obtainable from learning with all available data. This result suggests that it may be possible to develop algorithms that take advantage of the sub-sampling methodology to reduce the time required to infer a model while sacrificing little if any accuracy. Methods of improving effective and efficient learning via sampling are also investigated, and now sampling methodologies proposed. These methodologies include using a varying-proportion of instances to determine the next inference step and using a statistical calculation at each inference step to determine sufficient sample size. Experiments show that using a statistical calculation of sample size can not only substantially reduce execution time but can do so with only a small loss, and occasional gain, in accuracy. One of the common uses of sampling is in the construction of learning curves. Learning curves are often used to attempt to determine the optimal training size which will maximally reduce execution time while nut being detrimental to accuracy. An analysis of the performance of methods for detection of convergence of learning curves is performed, with the focus of the analysis on methods that calculate the gradient, of the tangent to the curve. Given that such methods can be susceptible to local accuracy plateaus, an investigation into the frequency of local plateaus is also performed. It is shown that local accuracy plateaus are a common occurrence, and that ensuring a small loss of accuracy often results in greater computational cost than learning from all available data. These results cast doubt over the applicability of gradient of tangent methods for detecting convergence, and of the viability of learning curves for reducing execution time in general.

Providence and method : Herbert Butterfield and the interpretation of history

This thesis presents an extended critical analysis of the methodological thought of the Cambridge historian Herbert Butterfield (1900-1979). It is based on the full range of his published works, as well as unpublished material. It is a contribution to the history of historiography, and to the theory of history. The thesis concentrates on the relationship between Butterfield’s views on historical research and historiographical narration, and his concept of a ‘historical process’ which was the expression of a ‘providential order’. The principal problem in Butterfield’s writings is the contradiction between his advocacy of a ‘technical history’ seen as free and independent of any interpretative presupposition, and his belief in Providence and its utilisation in the course of his historiography. Firstly, the thesis argues that Butterfield employs his own presuppositions even without making explicit references to his belief in Providence. Secondly, it explains why he embraced and advocated two contradictory standpoints. Butterfield’s position is best clarified with reference to the content of his Christian beliefs. It is argued that Butterfield regarded all non-Christian interpretations of history as distorting oversimplifications. They were for him not fully scientific and rigorous, because they selected some phenomenon, or principle, or institution arising within human history and made it the central interpretative principle. He saw his own practice as exempt from this criticism. This thesis argues that Butterfield’s position is nevertheless interpretative. However, it is argued that Butterfield’s critique of ideologically based historiographic distortions and oversimplifications is important in the assessment of rival interpretations of history.

Intersection of autonomy and social control : negotiating teenage motherhood

Contrary to popular belief, teenage mothers are a declining proportion of birthing women; however they receive much negative public attention. Of particular public concern is the high cost of supporting teenage mothers, in terms of financial, health and welfare resources. Historically, the typical founding mother of white Australia was single, but post-war changes in the family structure incorporated the expectation that children be born into two-parent households with the male as the breadwinner. Policy changes in the seventies saw the introduction of the Sole Parents Pension which meant that many birthing teenage women could choose to keep their infants rather than have a clandestine adoption or an enforced marriage. The parenting practices of teenage mothers have been criticised for being less than optimal, and mother and child are reported as being disadvantaged cognitively, psychosocially, and educationally. One widespread nursing service which provides support for new mothers in Victoria is the Maternal and Child Health Service; however, teenage mothers appear reluctant to use such services. Why this should be so became an important question for this research, since little is known about the parenting practices of teenage mothers. This study therefore sought to explore mothering from the perspective of five sole supporting teenage mothers each of whom had a child over six months of age. The research methodology took an interpretive ethnographic approach and was guided by feminist principles. The data were collected through repeated interviewing, participant observation, informal discussions with key informants, field notes and journalling. Data analysis was aided by the use of the software, program NUD-IST. It was found that the young women in this study each chose to give birth with full realisation that their existence was dependent on the Welfare State. Unanticipated, however, were the many structural barriers which made their lives cataclysmic, but these reinforced their determination to prove themselves worthy and capable mothers. The young women negotiated motherhood through a range of social supports and through maternal practice. Unquestionably, their social dependency on the welfare system forced them into marginal citizen status. Moreover, absolute and intrinsic poverty levels were experienced, brought about by inadequate welfare payments. Formal support agencies, such as the Maternal and Child Health nurses were rarely approached to provide childrearing support beyond the initial months following birthing, since the teenagers' basic needs such as shelter, food and clothing took precedence over their parenting needs. Additionally, some nurses were perceived to hold judgmental attitudes towards teenage mothers. It was far easier to forestall confrontation with nurses and the other 'older' women clientele by avoiding them. Thus XI they turned to charitable agencies who provided a safety net in the form of emergency supplies of money, food, or equipment. Informal networks of friends provided alternative modes of support when family help failed to materialise. The children, however, provided the young women with an opportunity to transform their lives by breaking free of the past, and by creating a new, mature existence for themselves. Despite being abandoned by family, friends, lovers and society, in the privacy and isolation of their own homes, they attempted to provide a more nurturing environment for their children than they themselves had received. Each bestowed unconditional maternal love on the child and were rewarded through the pleasures of watching their children grow and develop into worthwhile individuals. The children became the focus of their attention and their reason for living. In the course of their welfare dependency, the young women became public property, targets of surveillance, and were subjected to stigmatising and condescending public attitudes wherever they went. In this way, it was evident that they were an oppressed group, but each found ways of resisting. Rather than focussing on their oppressive or disabling lives, or dwelling on their disadvantaged status, the young women sought their identities as mature women through motherhood and by demonstrating that they could do this important job well. Through motherhood their lives had meaning and a sense of purpose. The thesis concludes that motherhood in the teenage years is difficult. However, if appropriate supports are made available, teenage mothers need be no different from non-teenage mothers. But with state resources shrinking, and their own resources limited, teenage mothers are disadvantaged. In some ways, this study showed that all levels of support were inadequate, although those provided through the charitable organizations were seen to be the most appropriate. This reflects the current policy of economic rationalism adopted by most Western liberal democracies in the 1980s and 1990s and no less by the former Keating Labor Government in Australia.

Presbyterian ethos and environment in the novels of John Buchan : a religious and historical study

The aim of this thesis is to establish, from a historical and religious perspective, that the Presbyterian ethos and environment in which John Buchan was reared was the predominating influence in the writing of his novels. Presbyterianism was not the only influence on Buchan that determined the character of his stories. Buchan was by temperament a romantic, and this had considerable influence on his literature. His novels are romances, peopled by romantic figures who pursue romantic adventures. There are the signs of Buchan's romantic nature in the contents of the novels: creative imagination, sensitivity to nature, and expectations of the intrusion of other worlds, with destiny-determining events to follow. But Buchan had also an acquired classicism. His studies at Glasgow and Oxford Universities brought him in touch with a whole range of the master-pieces of classical literature, especially the works of Plato and Virgil. This discipline gave him clarity and conciseness in style, and balanced the romantic element in him, keeping his work within the bounds of reason. At the heart of Buchan's life and work, however, was his deeply religious nature and this, while influenced by romanticism and classicism, was the dominant force behind his work. Buchan did not accept in its entirety the Presbyterian doctrine conveyed to him by his father and his Church. He was moderate by temperament and shrank from excesses in religious matters, and, being a romantic, he shied away from any fixed creeds. He did embrace the fundamentals of Christianity, however, which he learned from his father and his Church, even if he did put aside the Rev. John's orthodox Calvinism. The basic Christianity which underlies all Buchan's novels has the stamp of Presbyterianism upon it, and that stamp is evident in his characters and their adventures. The expression of Christianity which Buchan embraced was the Christian Platonism of seventeenth century theologians, who taught and preached at Cambridge University, They gave prominence to the place of reason and conscience in man's search for God, They believed that reason and conscience were the ‘candle of the Lord’ which was existed every one. It was their conviction that, if that light was followed, it would lead men and women to God. They were against superstition and fanaticism in religion, against all forms of persecution for religious beliefs, and insisted that God could only be known by renouncing evil and setting oneself to live according to God’s will. This teaching Buchan received, but the stamp of his Presbyterianism was not obliterated. The basic doctrines which arose from his father's Presbyterianism and are to be found in Buchan's novels are as follows: a. the fear (or awe) of God, as life's basic religious attitude; b. the Providence of God as the ultimate determinative force in the outcome of events; c. the reality, malignity and universality of evil which must be forcefully and constantly resisted; d. the dignity of human beings in bearing God's image; e. the conviction that life has meaning and that its ultimate goal, therefore, is a spiritual one - as opposed to the accumulation of wealth, the achieving of recognition from society, and the gaining access to power; f. the necessity of challenge in life for growth and fulfilment, and the importance of fortitude in successfully meeting such challenge; g. the belief that, in the purpose of God, the weak confound the strong. These emphases of Presbyterianism are to be found in all Buchan's novels, to a greater or lesser degree. All his characters are serious people, with a moral purpose in life. Like the pilgrims of the Bible, they seek a country: true fulfilment. This quest becomes more spiritual and more dearly defined as Buchan grows in age and maturity. The progress is to be traced from his early novels, where fulfilment is sought in honour and self-approving competence, as advocated by classicism; to the novels of his middle years, where fulfilment is sought in adventures suggested by romanticism. In his final novel Sick Heart River. Buchan appears to have moved somewhat from his earlier classicism and his romanticism as the road to fulfilment. In this novel, Buchan expresses what, for him, is ultimate fulfilment: a conversion to God that produces self-sacrificing love for others. The terminally-ill Edward Leithen sets out on a romantic adventure that will enable him to die with dignity, and so, in classic style, justify his existence. He has a belief in God, but in a God who is almighty, distant and largely irrelevant to Leithen's life. In the frozen North of Canada, where he expects to find his meagre beliefs in God's absolute power confirmed by the icy majesty of mountain and plain, he finds instead God's mercy and it melts his heart. In a Christ-like way, he brings life to others through his death, believing that, through death, he will find life. There is sufficient evidence to give plausibility to the view that Buchan is describing in Leithen his own pilgrimage. If so, it means that Buchan found his way back to the fundamental experience of the Christian life, conversion, so strongly emphasised in his orthodox Presbyterianism home and Church. However, Buchan reaches this conclusion in a Christian Platonist way, through the natural world, rather than through the more orthodox pathway of Scripture.

Community-based environmental education : government and community, economics and environment

This thesis contends that government focus on policy implicitly defines community education as a means of overcoming barriers to government-initiated change, rather than as an input to governmental decision-making. The role of education is thus viewed as instrumentalist rather than as dialectical in nature. I argue that this role has been reinforced and driven by economic rationalism, as a mechanism related to scientific theory and practice. The thesis addresses the role of government in non-institutional community-based environmental education. Of interest is environmental education under the dominance of economic rationalism and as expressed in government-derived policy, in its own right, and as enacted in two government funded animal management projects. The main body of data, then, includes a review of some contemporary environmental policies and two case studies of 'policy in practice'. Chapter One provides an overview of environmentalism as it has emerged as part of the discourse of Western political systems. Recognised as part of this change is a move to environmentalism embued with the rhetoric of economic theory. The manifestation of this change can be seen in an emphasis on management for the natural environment's use as a resource for humans. Education under this arrangement is valued in terms of its ability to support initiatives that are perceived as economically viable and economically advantageous, maintaining centralised control of decision-making and serving the interests of those who profit from this arrangement. Government-derived environmental policies are presented in Chapter Two. They provide evidence of the conjoining of environment with economic rationalism and the adoption of a particular stance which is both utilitarian and instrumentalist. Emerging from this is an understanding of the limitations placed on environmental debates that do not respond to complex understandings of context and instead support and legitimate centralisation of decision-making and control. Chapter Three presents an argument for an historical approach to environmental education research to accommodate contextual dimensions, as well as scientific, economic and technical dimensions, of the subject under study. An historical approach to research, inclusive of biographical, intergenerational and geographical histories, goes some way to providing an understanding of current individual and collective responses to policy enactment within the two study sites. It also responds to the concealing of history which results from the reduction of environmental debates to economic terms. With this in mind, Chapters Four and Five provide two historical case studies of 'policy in practice'. Chapter Four traces the workings of a rabbit control project in the Sutton Grange district of Victoria and Chapter Five provides an account of a mouse plague project in the Wimmera and Mallee regions of Victoria. The Sutton Grange rabbit project is organised and controlled by district landholders while the Wimmera and Mallee mouse project is organised and controlled by representatives from a scientific organisation and a government agency. Considered in juxtaposition, the two case studies enable an analysis of two somewhat different expressions of the 'role of government'. Chapter Six investigates the competing processes of community participation in governmental decision-making and Australia's system of representative democracy, Despite a call for increased community participation, the majority of policies remain dominated by governmental rhetoric and ideology underpinned by a belief in impartiality. The primacy of economics is considered in terms of government and community interaction, with specific reference to the emergence of particular conceptual constructions, such as cost-benefit analysis, that support this dominance. Of specific importance to this thesis is the argument that economic theory is essentially anthropocentric and individualist and, thus, necessarily marginalises particular conceptions of environment that are non-anthropocentric and non-individualistic. Finally, Chapter Six examines two major interrelated tensions; those of central interests and community interests, and economic rationalism and environmentalist. Chapter Seven looks at examples of theories and practices that fall outside the rationality determined by scientistic knowledge. It is clear from the examination of environmental policy within this thesis that the role ascribed to environmental education is instrumentalist. The function of education is often to support, promote and implement policy and its advocated practices. It is also clear from the examination of policy and advocated processes that policy defines community education as a means of manifesting change as determined by policy, rather than as an input to governmental decision-making. The domination of scientific, economic and technocratic processes (and legitimation of processes) allows only for an instrumentalist approach to education from government. What is encouraged by government through the process of change is continuity rather than reform. It promotes change that will not disrupt the governing hegemony. Particular perspectives and practices, such as a critical approach to education, are omitted or considered only within the unquestioned rationale of the dominant worldview. Chapter Seven focuses on the consequence of government attention to policy which implicitly defines community education as a means of overcoming barriers to change, rather than as an input to governmental decision-making. Finally a list of recommendations is put forward as a starting point to reconstruct community-based environmental education. The role considered is one that responds to, and encourages engagement in, debates which expose disparate views, assumptions and positions. Community ideology must be challenged through the public practices of communication and understanding, decision-making, and action. Intervention is not on a level that encourages a preordinate outcome but, rather, what is encouraged is elaborate consideration of disparate views and rational opinions, and the exposure of assumptions and interests behind ideological positions.

Correlates of screening mammography for Italian and Anglo-Australian women

The first aim of the research was to determine the applicability of certain variables from the Health Belief Model (HBM), the Theory of Reasoned Action (TRA), the risk dimensions from the Psychometric Paradigm, the Common-Sense Model of Illness Representations and the Locus of Control to Italian women’s beliefs and behaviours in relation to screening mammography. These models have predominantly been derived and evaluated with English-speaking persons. The study used quantitative and qualitative methods to enable explanation of research-driven and participant-driven issues. The second aim was to include Italian women in health behaviour research and to contrast the Italian sample with the Anglo-Australian sample to determine if differences exist in relation to their beliefs. In Australia many studies in health behaviour research do not include women whose first language is not English. The third aim was to evaluate the Anti-Cancer Council of Victoria’s (ACCV) Community Language Program (CLP) by: (a) identifying the strengths and weaknesses of the program as seen by the participants; and (b) assessing the impact of the program on women’s knowledge and beliefs about breast cancer, early detection of breast cancer, self-reported and intended breast screening behaviours. The CLP is an information service that uses women’s first language to convey information to women whose first language is not English. The CLP was designed to increase knowledge about breast and cervical cancer. The research used a pre-test-intervention-post-test design with 174 Italian-born and 138 Anglo-Australian women aged 40 years and over. Interviews for the Italian sample were conducted in Italian. The intervention was an information session that related to breast health and screening mammography. Demographic variables were collected in the Pre-Test only. Qualitative open-ended questions that related specifically to the information session were collected in the Post-Test phase of the study. Direct logistic regression was used with the participants’ beliefs and behaviours to identify the relevant variables for language (Italian speaking and English-speaking), attendance to an information session, mammography screening and breast self-examination (BSE) behaviour. Pre- and Post-Test comparisons were conducted using chi-square tests for the non-parametric data and paired sample t-tests for the parametric data. Differences were found between the Italian and Anglo-Australian women in relation to their beliefs about breast cancer screening. The Italian women were: (1) more likely to state that medical experts understood the causes of breast cancer; (2) more likely to feel that they had less control over their personal risk of getting breast cancer; (3) more likely to be upset and frightened by thinking about breast cancer; (4) less likely to perceive breast cancer as serious; (4) more likely to only do what their doctor told them to do; and (5) less likely to agree that there were times when a person has cancer and they don’t know it. A pattern emerged for the Italian and Anglo-Australian women from the logistic regression analyses. The Italian women were much more likely to comply with medical authority and advice. The Anglo-Australian women were more likely to feel that they had some control over their health. Specifically, the risk variable ‘dread’ was more applicable to the Italian women’s behaviour and internal locus of control variable was more relevant to the Anglo-Australian women. The qualitative responses also differed for the two samples. The Italian women’s comments were more general, less specific, and more limited than that of the Anglo-Australian women. The Italian women talked about learning how to do BSE whereas the Anglo-Australian women said that attending the session had reminded them to do BSE more regularly. The key findings and contributions of the present research were numerous. The focus on one cultural group ensured comprehensive analyses, as did the inclusion of an adequate sample size to enable the use of multivariate statistics. Separating the Italian and Anglo-Australian samples in the analyses provided theoretical implications that would have been overlooked if the two groups were combined. The use of both qualitative and quantitative data capitalised on the strengths of both techniques. The inclusion of an Anglo-Australian group highlighted key theoretical findings, differences between the two groups and unique contributions made by both samples during the collection of the qualitative data. The use of a pre-test-intervention-post-test design emphasised the reticence of the Italian sample to participate and talk about breast cancer and confirmed and validated the consistency of the responses across the two interviews for both samples. The inclusion of non-cued responses allowed the researcher to identify the key salient issues relevant to the two groups. The limitations of the present research were the lack of many women who were not screening and reliance on self-report responses, although few differences were observed between the Pre- and Post-Test comparisons. The theoretical contribution of the HBM and the TRA variables was minimal in relation to screening mammography or attendance at the CLP. The applicability of these health behaviour theories may be less relevant for women today as they clearly knew the benefits of and the seriousness of breast cancer screening. The present research identified the applicability of the risk variables to the Italian women and the relevance of the locus of control variables to the Anglo-Australian women. Thus, clear cultural differences occurred between the two groups. The inclusion of the illness representations was advantageous as the responses highlighted ideas and personal theories salient to the women not identified by the HBM. The use of the illness representations and the qualitative responses further confirmed the relevance of the risk variables to the Italian women and the locus of control variables to the Anglo-Australian women. Attendance at the CLP did not influence the women to attend for mammography screening. Behavioural changes did not occur between the Pre- and Post-Test interviews. Small incremental changes as defined by the TTM and the stages of change may have occurred. Key practical implications for the CLP were identified. Improving the recruitment methods to gain a higher proportion of women who do not screen is imperative for the CLP promoters. The majority of the Italian and Anglo-Australian women who attended the information sessions were women who screen. The fact that Italian women do not like talking or thinking about cancer presents a challenge to promoters of the CLP. The key theoretical finding that Italian women dread breast cancer but comply with their doctor provides clear strategies to improve attendance at mammography screening. In addition, the inclusion of lay health advisors may be one way of increasing attendance to the CLP by including Italian women already attending screening and likely to have attended a CLP session. The present research identified the key finding that improving Anglo-Australian attendance at an information session is related to debunking the myth surrounding familial risk of breast cancer and encouraging the Anglo-Australian women to take more control of their health. Improving attendance for Italian women is related to reducing the fear and dread of breast cancer and building on the compliance pattern with medical authority. Therefore, providing an information session in the target language is insufficient to attract non-screeners to the session and then to screen for breast cancer. Suggestions for future research in relation to screening mammography were to include variables from more than one theory or model, namely the risk, locus of control and illness representations. The inclusion of non-cued responses to identify salient beliefs is advantageous. In addition, it is imperative to describe the profile of the cultural sample in detail, include detailed descriptions of the translation process and be aware of the tendency of Italian women to acquiesce with medical authority.

Women, religion and social change in the Philippines : refractions of the past in urban filipinas' religious practices today

This research is an exploration of the place of religious beliefs and practices in the life of contemporary, predominantly Catholic, Filipinas in a large Quezon City Barangay in Metro Manila. I use an iterative discussion of the present in the light of historical studies, which point to women in pre-Spanish ‘Filipino’ society having been the custodians of a rich religious heritage and the central performers in a great variety of ritual activities. I contend that although the widespread Catholic evangelisation, which accompanied colonisation, privileged male religious leadership, Filipinos have retained their belief in feminine personages being primary conduits of access to spiritual agency through which the course of life is directed. In continuity with pre-Hispanic practices, religious activities continue to be conceived in popular consciousness as predominantly women’s sphere of work in the Philippines. I argue that the reason for this is that power is not conceived as a unitary, undifferentiated entity. There are gendered avenues to prestige and power in the Philippines, one of which directly concerns religious leadership and authority. The legitimacy of religious leadership in the Philippines is heavily dependent on the ability to foster and maintain harmonious social relations. At the local level, this leadership role is largely vested in mature influential women, who are the primary arbiters of social values in their local communities. I hold that Filipinos have appropriated symbols of Catholicism in ways that allow for a continuation and strengthening of their basic indigenous beliefs so that Filipinos’ religious beliefs and practices are not dichotomous, as has sometimes been argued. Rather, I illustrate from my research that present day urban Filipinos engage in a blend of formal and informal religious practices and that in the rituals associated with both of these forms of religious practice, women exercise important and influential roles. From the position of a feminist perspective I draw on individual women’s articulation of their life stories, combined with my observation and participation in the religious practices of Catholic women from different ethnic and socio-economic backgrounds, to discuss the role of Filipinas in local level community religious leadership. I make interconnections between women’s influence in this sphere, their positioning in family social relations, their role in the celebration of All Saints and All Souls Days in Metro Manila’s cemeteries and the ubiquity and importance of Marian devotions. I accompany these discussions with an extensive body of pictorial plates.

The halloween effect and Japanese equity prices : myth or exploitable anomaly

Bouman and Jacobsen (American Economic Review 92(5), 1618–1635, 2002) examine monthly stock returns for major world stock markets and conclude that returns are significantly lower during the May–October periods versus the November–April periods in 36 of 37 markets examined. They argue that, in general, the Halloween strategy outperforms the buy and hold strategy thereby casting doubt on the validity of the efficient market paradigm. More recently, Maberly and Pierce (Econ Journal Watch 1(1), 29–46, 2004) re-examine the evidence for U.S. equity prices and conclude that Bouman and Jacobsen’s results are not robust to alternative model specifications. Extending prior research, this paper examines the robustness of the Halloween strategy to alternative model specifications for Japanese equity prices. The Halloween effect is concentrated in the period prior to the introduction of Nikkei 225 index futures in September 1986. After the internationalization of Japanese financial markets in the mid-1980s, the Halloween effect disappears.

Evaluation of the performance and development culture initiative 2005-2008

An evaluation of the P&D Culture initiative 2005-2008 was contracted to Deakin University in 2009. The findings from the evaluation indicated a belief that the P&D Culture initiative had a significant impact on:

* Establishing effective school policies, processes and structures
* Strengthening school culture related to continuous improvement
* Improved instructional practice
* Improved student learning
* Implementation of other DEECD initiatives.

Deficient "disadvantage students" or media-savvy new meaning makers?: engaging new metaphors for redesigning classrooms and pedagogies.

Words work in powerful ways in the world. We work from and with an understanding that the ways we talk about people, places and practices matter. If this was ever in doubt, witness recent media reports of the 'attacks on America' and the aftermath of the 'war on terrorism': the world's people have been re-divided both metaphorically and materially in these phrases. Meaning is constructed in and through language as categories, metaphors, rationales, stories, and tropes (Game & Metcalfe, 1996) and, while these are just representations of ideas, practices and material events and circumstances (Hall, 1997), we nevertheless act on those meanings (Fairclough, 1989; Gee, 1999). For example, whether people are described as 'border crossers,' 'invaders,' 'nomads,' 'gypsies,' 'asylum seekers' or 'refugees' affects how they treated, what they can be and what they can do. And in education, whether it's the 'literacy hour' or 'catching children in the net' or reading 'recovery,' words are inevitably tied to programs and proposals for solutions. How the problems are described and defined are crucial in how decisions are made.

The work of death in Brontë's and Dickinson's poetry

Death determines distinctly different, almost inverse, responses and outcomes for Emily Dickinson and Emily Brontë. Death is an imaginative poetic solution for Dickinson, demonstrating her belief that art is the only way to transcend death. But death is the ultimate solution for Brontë, for whom freedom of the imagination leads to mystical unity and continuity.

A survey of rural nurses and post registration tertiary education

Explores the participation in tertiary education by registered nurses in a rural city. The impact of tertiary education for nurses who are already registered has been poorly investigated in Australia. The main barriers to future study included family commitments, financial concern, lack of available time and a belief that tertiary study lacked relevance,

Evaluation of Bayesian belief networks for diagnosis of psychotic disorders

The thesis examined the inter-rater reliability and procedural validity of four computerised Bayesian belief networks (BBNs) which were developed to assist with the diagnosis of psychotic disorders. The results of this research indicated that BBNs can significantly improve diagnostic reliability and may represent an important advance over current diagnostic methods. The professional portfolio investigated, through the presentation of case studies and review of literature relevant to each case study, how comorbidity and context of depression may impact on cognitive behavioural therapy treatment.

If in doubt - disclose

This thesis develops a conceptual model to explain executive conflict of interest in the AFL, including: a definition of conflict of interest in sport management; a process for managing conflict of interest; and the impact of social expections on the management process.

Radical epistemological skepticism about justified belief

"Radical epistemological skepticism" designates the philosophical position that all our beliefs, and knowledge based upon them, are groundless. Skeptics claims have been recorded throughout history and, despite their threat to the security of human knowledge, they endure. The thesis hypothesises that skepticism is a consequence of our development of symbolic capability.