Factors affecting the organisational adoption of blockchain technology in australia : a mixed-methods approach
- Authors: Malik, Muhammad Saleem
- Date: 2022
- Type: Text , Thesis , PhD
- Full Text:
- Description: Blockchain (BCT) is an emerging technology that promises many benefits for organisations, such as disintermediation, data security, data transparency, a single version of the truth, and trust among trading partners. Despite its multiple benefits, the adoption rate of BCT among organisations has not reached a significantly high level worldwide. The present thesis addresses this issue in the Australian context. There is a knowledge gap in what specific factors, among the plethora of factors reported in the extant scholarly and commercial literature, affect Australian organisations while deciding to adopt BCT. To fill this gap, this thesis uses a mixed-methods approach known as sequential exploratory mixed methods. In this approach, the research starts with a qualitative phase as an initial phase followed by a quantitative phase. During the qualitative phase, data were collected through semi-structured interviews of the BCT experts and decision-makers working with the ifferent Australian organisations that adopted or were in the process of adopting BCT. The Technology, Organisation, Environment (TOE) framework, based on the qualitative interpretative approach, was used as a theoretical lens during the qualitative phase. The qualitative data were analyzed using the thematic analysis technique with the SQR NVivo software. The analysis shows that the different factors, belonging to the technological, organisational, and environmental contexts, affect the organisational decision to adopt BCT in Australia. The technological factors include perceived benefits, perceived computability, perceived complexity, perceived disintermediation, and perceived information transparency; organisational factors are organisational innovativeness, organisational learning capability, top management support; environmental factors consist of government support, standards uncertainty, competition intensity, and trading partners readiness. The qualitative analysis also shows the direct and moderating effect of the perceived risks between the relationship of the identified factors and organisational adoption of BCT. Based on the findings of the qualitative phase, the thesis develops a theoretical conceptual model, which shows the relationship between the factors and the organisational adoption of BCT. To increase the external validity of the developed conceptual model, the thesis started a quantitative phase with the administration of an online survey for data collection. Certain criteria were set to screen out the irrelevant participants in the survey. During this phase, hypotheses were proposed for the relationship of the factors identified in the qualitative phase and the organisational adoption of BCT. The survey data was analyzed using the PLS Structural Equation Modelling (SEM) technique with the SmartPLS 3 software. The quantitative analysis confirms the findings of the qualitative phase that the perceived benefits, perceived compatibility, perceived information transparency, perceived disintermediation, organisational innovativeness, organisational learning capability, top management support, competitive intensity, government support, and trading partner readiness have a positive effect on the organisational adoption of BCT. Whereas the perceived complexity, standards uncertainty, and perceived risks have a negative effect. The analysis also shows that the moderating effects of perceived risks are significant in the relationship of perceived compatibility, perceived information transparency, perceived disintermediation, organisational innovativeness, organisation innovativeness, competition intensity, and organisational adoption of BCT. Contrary to the qualitative findings, ‘perceived risks’ has no moderating effects on the relationship of perceived benefits, organisational learning capability, top management support, government support, trading partner readiness, and the adoption of BCT. The thesis has both theoretical and practical contributions, which are useful both for theory development and decision-making for the adoption of BCT in Australia. Theoretically, this thesis contributes to the existing IT adoption literature in several ways. Firstly, the thesis provides empirical evidence about the factors affecting organisational adoption of BCT in Australia. This is the first in-depth sequential exploratory mixed methods research that bridges this knowledge gap in the extant literature. The identification of such factors is important, particularly for the Australian government and organisations interested in the value creation of BCT. Second, the thesis reports the effect of new factors, namely, perceived information transparency, perceived disintermediation, organisational innovativeness, organisational learning capability, standards uncertainty, trading partner readiness, and competition intensity on BCT adoption that are exclusively identified in this research. Third, this thesis confirms the findings of the past studies that the factors of perceived benefits and perceived compatibility, perceived complexity, and top management support have an effect on the organisational adoption of BCT. Fourth, according to the best of the authors' knowledge, this is the first research that has used the qualitative interpretive research approach to investigate the organisational adoption of BCT. Therefore, the thesis confirms the suitability of the qualitative interpretive research approach for BCT adoption. Lastly, most of the researchers have used the TOE framework in either in qualitative or quantitative research. This thesis proves its validity in mixed methods research as well. The thesis's practical contributions are discussed in chapter 7.
- Description: Doctor of Philosophy
- Authors: Malik, Muhammad Saleem
- Date: 2022
- Type: Text , Thesis , PhD
- Full Text:
- Description: Blockchain (BCT) is an emerging technology that promises many benefits for organisations, such as disintermediation, data security, data transparency, a single version of the truth, and trust among trading partners. Despite its multiple benefits, the adoption rate of BCT among organisations has not reached a significantly high level worldwide. The present thesis addresses this issue in the Australian context. There is a knowledge gap in what specific factors, among the plethora of factors reported in the extant scholarly and commercial literature, affect Australian organisations while deciding to adopt BCT. To fill this gap, this thesis uses a mixed-methods approach known as sequential exploratory mixed methods. In this approach, the research starts with a qualitative phase as an initial phase followed by a quantitative phase. During the qualitative phase, data were collected through semi-structured interviews of the BCT experts and decision-makers working with the ifferent Australian organisations that adopted or were in the process of adopting BCT. The Technology, Organisation, Environment (TOE) framework, based on the qualitative interpretative approach, was used as a theoretical lens during the qualitative phase. The qualitative data were analyzed using the thematic analysis technique with the SQR NVivo software. The analysis shows that the different factors, belonging to the technological, organisational, and environmental contexts, affect the organisational decision to adopt BCT in Australia. The technological factors include perceived benefits, perceived computability, perceived complexity, perceived disintermediation, and perceived information transparency; organisational factors are organisational innovativeness, organisational learning capability, top management support; environmental factors consist of government support, standards uncertainty, competition intensity, and trading partners readiness. The qualitative analysis also shows the direct and moderating effect of the perceived risks between the relationship of the identified factors and organisational adoption of BCT. Based on the findings of the qualitative phase, the thesis develops a theoretical conceptual model, which shows the relationship between the factors and the organisational adoption of BCT. To increase the external validity of the developed conceptual model, the thesis started a quantitative phase with the administration of an online survey for data collection. Certain criteria were set to screen out the irrelevant participants in the survey. During this phase, hypotheses were proposed for the relationship of the factors identified in the qualitative phase and the organisational adoption of BCT. The survey data was analyzed using the PLS Structural Equation Modelling (SEM) technique with the SmartPLS 3 software. The quantitative analysis confirms the findings of the qualitative phase that the perceived benefits, perceived compatibility, perceived information transparency, perceived disintermediation, organisational innovativeness, organisational learning capability, top management support, competitive intensity, government support, and trading partner readiness have a positive effect on the organisational adoption of BCT. Whereas the perceived complexity, standards uncertainty, and perceived risks have a negative effect. The analysis also shows that the moderating effects of perceived risks are significant in the relationship of perceived compatibility, perceived information transparency, perceived disintermediation, organisational innovativeness, organisation innovativeness, competition intensity, and organisational adoption of BCT. Contrary to the qualitative findings, ‘perceived risks’ has no moderating effects on the relationship of perceived benefits, organisational learning capability, top management support, government support, trading partner readiness, and the adoption of BCT. The thesis has both theoretical and practical contributions, which are useful both for theory development and decision-making for the adoption of BCT in Australia. Theoretically, this thesis contributes to the existing IT adoption literature in several ways. Firstly, the thesis provides empirical evidence about the factors affecting organisational adoption of BCT in Australia. This is the first in-depth sequential exploratory mixed methods research that bridges this knowledge gap in the extant literature. The identification of such factors is important, particularly for the Australian government and organisations interested in the value creation of BCT. Second, the thesis reports the effect of new factors, namely, perceived information transparency, perceived disintermediation, organisational innovativeness, organisational learning capability, standards uncertainty, trading partner readiness, and competition intensity on BCT adoption that are exclusively identified in this research. Third, this thesis confirms the findings of the past studies that the factors of perceived benefits and perceived compatibility, perceived complexity, and top management support have an effect on the organisational adoption of BCT. Fourth, according to the best of the authors' knowledge, this is the first research that has used the qualitative interpretive research approach to investigate the organisational adoption of BCT. Therefore, the thesis confirms the suitability of the qualitative interpretive research approach for BCT adoption. Lastly, most of the researchers have used the TOE framework in either in qualitative or quantitative research. This thesis proves its validity in mixed methods research as well. The thesis's practical contributions are discussed in chapter 7.
- Description: Doctor of Philosophy
Applied aspirations : design and applied art at the Ballarat Technical Art School during the early twentieth century
- Authors: Whetter, Elise
- Date: 2021
- Type: Text , Thesis , PhD
- Full Text:
- Description: Applied art and design schools operate at the nexus of art, industry, and education. During the early decades of the twentieth century, the regionally located Ballarat Technical Art School (BTAS) was the leading institution of its kind in Victoria, Australia, amid shifting economic, cultural, and pedagogical conditions. Emerging from a 1907 amalgamation of institutions, and subsequently administrated by the School of Mines Ballarat (SMB), BTAS was equipped with the assets, experience, and historic reputation necessary to surpass its provincial and metropolitan rivals. This micro-historical case-study employs qualitative analysis of primary sources to investigate the aims, outputs, and importance of BTAS, contextualised by the expectations and influences it operated under during the inaugural principalship of artist and educator, Herbert Henry Smith. Smith oversaw the training of designers, craftspeople, artists, and teachers from 1907 until his retirement in early 1940—a period of tumultuous events, fiscal obstacles, and social and cultural debate. The institution was accountable to diverse stakeholders and arbiters of taste, and successive cohorts learned in a contested space between tradition, origination, and modernisation. Pierre Bourdieu’s cultural theory serves to navigate this web of hierarchies, assumptions, and tensions, while secondary sources help contextualise findings. This thesis also discusses the suite of drawing, design and material-based disciplines delivered at BTAS as single subjects, full courses, and supplementary art-trade training. Throughout, featured students provide examples of regionally trained, Australian designer-maker and artist-teacher experiences. BTAS students learned from ambitious and skilled men and women, benefited from strong professional networks, and fostered a notable esprit-de-corps. The school was significant for its contribution to female technical training. The school’s pre-eminent position was modified during the late 1920s, when much art and art-teacher training was re-centred in Melbourne. Yet, the valuable, compelling, and widespread influence of Ballarat Technical Art School graduates resonated for decades.
- Description: Doctor of Philosophy
- Authors: Whetter, Elise
- Date: 2021
- Type: Text , Thesis , PhD
- Full Text:
- Description: Applied art and design schools operate at the nexus of art, industry, and education. During the early decades of the twentieth century, the regionally located Ballarat Technical Art School (BTAS) was the leading institution of its kind in Victoria, Australia, amid shifting economic, cultural, and pedagogical conditions. Emerging from a 1907 amalgamation of institutions, and subsequently administrated by the School of Mines Ballarat (SMB), BTAS was equipped with the assets, experience, and historic reputation necessary to surpass its provincial and metropolitan rivals. This micro-historical case-study employs qualitative analysis of primary sources to investigate the aims, outputs, and importance of BTAS, contextualised by the expectations and influences it operated under during the inaugural principalship of artist and educator, Herbert Henry Smith. Smith oversaw the training of designers, craftspeople, artists, and teachers from 1907 until his retirement in early 1940—a period of tumultuous events, fiscal obstacles, and social and cultural debate. The institution was accountable to diverse stakeholders and arbiters of taste, and successive cohorts learned in a contested space between tradition, origination, and modernisation. Pierre Bourdieu’s cultural theory serves to navigate this web of hierarchies, assumptions, and tensions, while secondary sources help contextualise findings. This thesis also discusses the suite of drawing, design and material-based disciplines delivered at BTAS as single subjects, full courses, and supplementary art-trade training. Throughout, featured students provide examples of regionally trained, Australian designer-maker and artist-teacher experiences. BTAS students learned from ambitious and skilled men and women, benefited from strong professional networks, and fostered a notable esprit-de-corps. The school was significant for its contribution to female technical training. The school’s pre-eminent position was modified during the late 1920s, when much art and art-teacher training was re-centred in Melbourne. Yet, the valuable, compelling, and widespread influence of Ballarat Technical Art School graduates resonated for decades.
- Description: Doctor of Philosophy
Challenges faced by early-career researchers in the sciences in Australia and the consequent effect of those challenges on their careers : a mixed methods project
- Authors: Christian, Katherine
- Date: 2021
- Type: Text , Thesis , PhD
- Full Text:
- Description: The purpose of the study was to explore the challenges faced by early-career researchers (ECRs) in the sciences in Australia and the consequent effect of those challenges on their careers. Using a realist/postpositivist paradigm, an evaluative approach, and a framework of job satisfaction, this project has explored and compared the views of ECRs to evaluate the factors which shape the ECR experience and contribute to job satisfaction or dissatisfaction and intention to leave, and to define the features which are necessary to keep an ECR in research. Data collection for this mixed methods study entailed a national survey of researchers working in universities and research institutes (n=658), a focus group discussion and semistructured in-depth interviews with eight women from a variety of scientific disciplines who had recently left academic research workplaces. I focussed particularly on the difficulties consequent to job insecurity: the constant need to attracting funding and a permanent position, lack of work-life balance and associated stress; and evidence of workplace difficulties such as bullying, harassment or inequity and support – or lack of it – offered by the research institutions. I examined the factors which contribute to and barriers which prevent job satisfaction of this population, and the consequent intention (if any) for ECRs to leave research or change their career path. I found an interesting situation whereby the satisfaction derived from a “love of science” was counterbalanced by stress and poor working conditions which are a consequence of lack of job security, typified by poor supervision, bullying or harassment, inequitable hiring practices, a concerning rate of impact from “questionable research practices” (impacting 34%-41% of respondents) and evidence of very high (80%) intention of ECRs to leave their position. The most significant predictor of intention to leave is time as a postdoctoral scientist: eventually the job insecurity and its associated stresses become too much and the ECRs leave their chosen career for work elsewhere. This decision, too, provides interesting findings as many of the ECRs have difficulty planning what to do next. They feel ill-prepared for an alternate career and suffer from a sense of failure as a result of having to leave academia. While addressing the shortage of funding is outside the scope of this study, in addition to offering my findings I put forward a range of recommendations which could lead to ar change of culture and benefit the wellbeing of ECRs in STEMM without incurring significant cost. The Australian Government, higher education institutions and the research community need to improve job security and workplace conditions and take better care of our people in STEMM disciplines or we will not have the scientists we need to deliver the “innovative Australia” planned for 2030 (Department of Industry Innovation and Science, 2018)
- Description: Doctor of Philosophy
- Authors: Christian, Katherine
- Date: 2021
- Type: Text , Thesis , PhD
- Full Text:
- Description: The purpose of the study was to explore the challenges faced by early-career researchers (ECRs) in the sciences in Australia and the consequent effect of those challenges on their careers. Using a realist/postpositivist paradigm, an evaluative approach, and a framework of job satisfaction, this project has explored and compared the views of ECRs to evaluate the factors which shape the ECR experience and contribute to job satisfaction or dissatisfaction and intention to leave, and to define the features which are necessary to keep an ECR in research. Data collection for this mixed methods study entailed a national survey of researchers working in universities and research institutes (n=658), a focus group discussion and semistructured in-depth interviews with eight women from a variety of scientific disciplines who had recently left academic research workplaces. I focussed particularly on the difficulties consequent to job insecurity: the constant need to attracting funding and a permanent position, lack of work-life balance and associated stress; and evidence of workplace difficulties such as bullying, harassment or inequity and support – or lack of it – offered by the research institutions. I examined the factors which contribute to and barriers which prevent job satisfaction of this population, and the consequent intention (if any) for ECRs to leave research or change their career path. I found an interesting situation whereby the satisfaction derived from a “love of science” was counterbalanced by stress and poor working conditions which are a consequence of lack of job security, typified by poor supervision, bullying or harassment, inequitable hiring practices, a concerning rate of impact from “questionable research practices” (impacting 34%-41% of respondents) and evidence of very high (80%) intention of ECRs to leave their position. The most significant predictor of intention to leave is time as a postdoctoral scientist: eventually the job insecurity and its associated stresses become too much and the ECRs leave their chosen career for work elsewhere. This decision, too, provides interesting findings as many of the ECRs have difficulty planning what to do next. They feel ill-prepared for an alternate career and suffer from a sense of failure as a result of having to leave academia. While addressing the shortage of funding is outside the scope of this study, in addition to offering my findings I put forward a range of recommendations which could lead to ar change of culture and benefit the wellbeing of ECRs in STEMM without incurring significant cost. The Australian Government, higher education institutions and the research community need to improve job security and workplace conditions and take better care of our people in STEMM disciplines or we will not have the scientists we need to deliver the “innovative Australia” planned for 2030 (Department of Industry Innovation and Science, 2018)
- Description: Doctor of Philosophy
'You Beauty' Alex Jesaulenko An historical exploration of the migrant who became a legend
- Authors: Eddy, Daniel
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text: false
- Description: The Austrian-born Alex Jesaulenko played football in the Victorian Football League (VFL) from 1967 to 1981. His rise to national prominence emerged during a period of great change within both Australian society and Australian rules football. This thesis, through a critical biographical approach, examines for the first time Jesaulenko’s early life, looking at his migrant experience and the role that Australian rules football played in aiding his integration into Australian society. It is not a kick-and-handball analysis of Jesaulenko’s entire football career; that has been extensively covered within copious amounts of primary and secondary sources. Instead, it explores his migrant journey – an important aspect of Jesaulenko’s life which has been largely overlooked – and the key developmental years of sporting education prior to emerging as a VFL champion. It concludes with one of, if not the most, iconic moments in the game’s history: Jesaulenko’s mark in the 1970 VFL grand final, which cemented his name within the Australian sporting consciousness. Australian rules football, and sport more generally, holds a unique place within society. Footballers, it can be argued, are archetypes for our daily dreams and aspirations; exalted figures that we afford status which few will experience in their everyday lives. Therefore, it is through the prism of Jesaulenko’s journey that we can learn more about the role Australian rules football has played for migrants integrating into Australian society.
- Description: Doctor of Philosophy
Latrobe Valley circular industrial ecosystem
- Authors: Ghayur, Adeel
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Climate change, energy security, pollution and increasing unemployment in the face of automation are four critical challenges facing every region in the twenty-first century, including the Latrobe Valley in Victoria, Australia. The Valley – location of the largest brown coal deposits and forest industry in the southern hemisphere – is undergoing unprecedented and rapid changes. Its ageing brown coal power plants are retiring and replacements are not planned, leading to job insecurity. Solutions are needed that ensure continued economic activity in the region whilst allowing for the Valley to contribute its fair share in the fight against the climate change. The aim of this study is to investigate a possible local solution that could help tackle these issues of the Latrobe Valley in addition to plastic pollution and energy insecurity. Transitioning from linear to circular materials flow is one possible solution that favours sustainability and job security. Consequently, a multiproduct succinic acid biorefinery is modelled, acting as an industrial hub in a potential Latrobe Valley circular economy. This allows for employment creation in the value-addition of its platform chemicals into carbon negative and environment-friendly products. Additionally, such a biorefinery concept has the capacity to tackle Post-combustion CO2 Capture (PCC) industry’s wastes. It is anticipated that any future utilisation of brown coal as an energy vector would entail PCC to ensure carbon neutrality. A PCC industry produces CO2 and amine wastes that require adequate disposal. The modelled biorefinery has the capacity to valorise both. The simulation and the techno-economic analysis show the modelled Carbon Negative Biorefinery consumes 656,000 metric tonnes (t) of pulp logs and 42,000 t of CO2 to produce 220,000 t of succinic acid, 115,000 t of acetic acid and 900 t of dimethyl ether, annually. Biorefinery’s CAPEX and OPEX stand at AU$ 635,000,000 and $ 180,000,000 respectively. The calculated Minimum Selling Price for succinic acid is $ 990/t, only 6.4% higher than a typical biorefinery. Subsequently, biorefinery’s capacity as an anchor tenant is also simulated via technical evaluations of four value-added products: • Poly(butylene succinate) as biodegradable polymer replacing petro-plastics – simulation results show 1 t of succinic acid produces 0.19 t of tetrahydrofuran and 0.44 t of poly(butylene succinate); • Carbon fibre for insulation products, sporting goods and foams – 1 t of lignin and 0.8 t of acetic anhydride produce 0.8 t of carbon fibre; • Succinylated lignin adhesive for replacing urea-formaldehyde in the wood industry – simulation results show the biorefinery concept having the capacity to valorise both waste amine and CO2 from a PCC plant; and • Renewable fuels like hydrogen as energy vectors – a small biorefinery can potentially provide dozens of gigawatt hours of stored power for backup and peak demands, annually. In summary, results of this research are: • A biorefinery can valorise PCC plant wastes; • Multiproduct succinic acid biorefinery is economically viable; • Renewable fuels are ideally suited as energy storage vectors for a renewable energy grid both in developing and developed countries; • Bioproducts can reduce CO2 emissions thereby mitigate climate change; • Bioproducts can replace petro-products and reduce pollution; • Bioproducts can replace construction industry materials associated with CO2 emissions; • Biorefineries can help a region transition from a linear to a circular economy; and • Circular economies have the potential to generate secure jobs. In conclusion, this research identifies platform biochemicals as potential key drivers in a linear economy’s transition to a circular economy.
- Description: Doctor of Philosophy
- Authors: Ghayur, Adeel
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Climate change, energy security, pollution and increasing unemployment in the face of automation are four critical challenges facing every region in the twenty-first century, including the Latrobe Valley in Victoria, Australia. The Valley – location of the largest brown coal deposits and forest industry in the southern hemisphere – is undergoing unprecedented and rapid changes. Its ageing brown coal power plants are retiring and replacements are not planned, leading to job insecurity. Solutions are needed that ensure continued economic activity in the region whilst allowing for the Valley to contribute its fair share in the fight against the climate change. The aim of this study is to investigate a possible local solution that could help tackle these issues of the Latrobe Valley in addition to plastic pollution and energy insecurity. Transitioning from linear to circular materials flow is one possible solution that favours sustainability and job security. Consequently, a multiproduct succinic acid biorefinery is modelled, acting as an industrial hub in a potential Latrobe Valley circular economy. This allows for employment creation in the value-addition of its platform chemicals into carbon negative and environment-friendly products. Additionally, such a biorefinery concept has the capacity to tackle Post-combustion CO2 Capture (PCC) industry’s wastes. It is anticipated that any future utilisation of brown coal as an energy vector would entail PCC to ensure carbon neutrality. A PCC industry produces CO2 and amine wastes that require adequate disposal. The modelled biorefinery has the capacity to valorise both. The simulation and the techno-economic analysis show the modelled Carbon Negative Biorefinery consumes 656,000 metric tonnes (t) of pulp logs and 42,000 t of CO2 to produce 220,000 t of succinic acid, 115,000 t of acetic acid and 900 t of dimethyl ether, annually. Biorefinery’s CAPEX and OPEX stand at AU$ 635,000,000 and $ 180,000,000 respectively. The calculated Minimum Selling Price for succinic acid is $ 990/t, only 6.4% higher than a typical biorefinery. Subsequently, biorefinery’s capacity as an anchor tenant is also simulated via technical evaluations of four value-added products: • Poly(butylene succinate) as biodegradable polymer replacing petro-plastics – simulation results show 1 t of succinic acid produces 0.19 t of tetrahydrofuran and 0.44 t of poly(butylene succinate); • Carbon fibre for insulation products, sporting goods and foams – 1 t of lignin and 0.8 t of acetic anhydride produce 0.8 t of carbon fibre; • Succinylated lignin adhesive for replacing urea-formaldehyde in the wood industry – simulation results show the biorefinery concept having the capacity to valorise both waste amine and CO2 from a PCC plant; and • Renewable fuels like hydrogen as energy vectors – a small biorefinery can potentially provide dozens of gigawatt hours of stored power for backup and peak demands, annually. In summary, results of this research are: • A biorefinery can valorise PCC plant wastes; • Multiproduct succinic acid biorefinery is economically viable; • Renewable fuels are ideally suited as energy storage vectors for a renewable energy grid both in developing and developed countries; • Bioproducts can reduce CO2 emissions thereby mitigate climate change; • Bioproducts can replace petro-products and reduce pollution; • Bioproducts can replace construction industry materials associated with CO2 emissions; • Biorefineries can help a region transition from a linear to a circular economy; and • Circular economies have the potential to generate secure jobs. In conclusion, this research identifies platform biochemicals as potential key drivers in a linear economy’s transition to a circular economy.
- Description: Doctor of Philosophy
Malmsbury bluestone and quarries : Finding holes in history and heritage
- Authors: Walter, Susan
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Malmsbury bluestone was used widely from 1856 in buildings in Victoria, throughout Australia, and in New Zealand. It features in many structures listed on heritage registers, yet its presence is barely recognised. This largely results from the stone quarries, buildings and the men who laboured with it being absent from modern Australian historiography. The fame previously associated with the stone was lost when stone use for structural purposes, and the associated stone skills, declined; a situation exacerbated by poor recognition of the stone industry’s role in building our nation through heritage citations of structures. Inspired by E. P. Thompson, this thesis uses Critical Inquiry though microhistory and landscape analysis to regain the stone’s fame and rescue stoneworkers from the condescension of history. A detailed analysis of quarries, structures, the bluestone industry, and a rarely-attempted total reconstitution of the lives of 194 vital stoneworkers, reveals a valuable cultural heritage currently undervalued and at risk. Malmsbury stoneworkers came from diverse backgrounds but worked co-operatively to promote and sustain a local industry which supplied a nationally-vital building material, despite the absence of a regulatory framework to protect their lives and rights. Scientific methods document the geological properties of the stone and demonstrate how, in the absence of science, skilled stoneworkers nevertheless identified and worked a valuable resource. Modern science could however be used to test building stones in a non-destructive manner to determine the sources of currently unidentified building stones. This thesis significantly contributes to the limited discourse on the history and heritage of Australian stone use through the perspectives of cultural landscapes, labour history and built and cultural heritage. Malmsbury bluestone truly was the standard of excellence and, along with stoneworkers, warrants more extensive recognition in Australia’s Heritage registers.
- Description: Doctor of Philosophy
- Authors: Walter, Susan
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Malmsbury bluestone was used widely from 1856 in buildings in Victoria, throughout Australia, and in New Zealand. It features in many structures listed on heritage registers, yet its presence is barely recognised. This largely results from the stone quarries, buildings and the men who laboured with it being absent from modern Australian historiography. The fame previously associated with the stone was lost when stone use for structural purposes, and the associated stone skills, declined; a situation exacerbated by poor recognition of the stone industry’s role in building our nation through heritage citations of structures. Inspired by E. P. Thompson, this thesis uses Critical Inquiry though microhistory and landscape analysis to regain the stone’s fame and rescue stoneworkers from the condescension of history. A detailed analysis of quarries, structures, the bluestone industry, and a rarely-attempted total reconstitution of the lives of 194 vital stoneworkers, reveals a valuable cultural heritage currently undervalued and at risk. Malmsbury stoneworkers came from diverse backgrounds but worked co-operatively to promote and sustain a local industry which supplied a nationally-vital building material, despite the absence of a regulatory framework to protect their lives and rights. Scientific methods document the geological properties of the stone and demonstrate how, in the absence of science, skilled stoneworkers nevertheless identified and worked a valuable resource. Modern science could however be used to test building stones in a non-destructive manner to determine the sources of currently unidentified building stones. This thesis significantly contributes to the limited discourse on the history and heritage of Australian stone use through the perspectives of cultural landscapes, labour history and built and cultural heritage. Malmsbury bluestone truly was the standard of excellence and, along with stoneworkers, warrants more extensive recognition in Australia’s Heritage registers.
- Description: Doctor of Philosophy
Managed identities : How do Australian university students who stutter negotiate their studies?
- Authors: Meredith, Grant
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Previous social research focused on people who stutter has problematised and largely ignored the experiences of university students who stutter, relying heavily upon surveys of teachers and peers while almost ignoring the authentic voices of students who stutter. Using a novel bricolage approach incorporating autoethnography, this project posed the question: “How do students who stutter negotiate their university experiences in Australia?” In 2008, a unique, web-based audit of 39 Australian public universities concluded that little publicly accessible information about stuttering support services was available for prospective university students. In many ways, stuttering is absent from disability classifications and service systems in higher education. An online survey of 102 Australian university students who stutter, and follow-up individual interviews with 15 students, revealed how these students manage their social identities from enrolment through to graduation. Only a minority of students reported ever formally disclosing their functional impairment to university support services or academic staff. This meant they rejected and/or avoided the disability label and associated stigma. The students were found to exercise a high degree of individual agency and creativity throughout their university journey. Many employed ‘concessional bargaining’ techniques to effectively navigate the oral assessment requirements during their degrees. Analysis of the interview and survey data is interspersed with critical self-reflection by the author – as a university lecturer who himself stutters. This thesis makes a significant contribution to shaping our understanding of the social identities and trajectories of university students who stutter. These students have been recast as positive, purposeful, resourceful and creative agents whose actions can be largely understood from a social model of disability. A series of recommendations for supporting and teaching these students are made to key stakeholders in higher education.
- Description: Doctor of Philosophy
- Authors: Meredith, Grant
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Previous social research focused on people who stutter has problematised and largely ignored the experiences of university students who stutter, relying heavily upon surveys of teachers and peers while almost ignoring the authentic voices of students who stutter. Using a novel bricolage approach incorporating autoethnography, this project posed the question: “How do students who stutter negotiate their university experiences in Australia?” In 2008, a unique, web-based audit of 39 Australian public universities concluded that little publicly accessible information about stuttering support services was available for prospective university students. In many ways, stuttering is absent from disability classifications and service systems in higher education. An online survey of 102 Australian university students who stutter, and follow-up individual interviews with 15 students, revealed how these students manage their social identities from enrolment through to graduation. Only a minority of students reported ever formally disclosing their functional impairment to university support services or academic staff. This meant they rejected and/or avoided the disability label and associated stigma. The students were found to exercise a high degree of individual agency and creativity throughout their university journey. Many employed ‘concessional bargaining’ techniques to effectively navigate the oral assessment requirements during their degrees. Analysis of the interview and survey data is interspersed with critical self-reflection by the author – as a university lecturer who himself stutters. This thesis makes a significant contribution to shaping our understanding of the social identities and trajectories of university students who stutter. These students have been recast as positive, purposeful, resourceful and creative agents whose actions can be largely understood from a social model of disability. A series of recommendations for supporting and teaching these students are made to key stakeholders in higher education.
- Description: Doctor of Philosophy
Reciprocal peer tutoring in an Australian undergraduate clinical skills setting : A mixed methods study
- Authors: Gazula, Swapnali
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Background Incorporation of active learning approaches in the preparation of nursing students for future educational roles is an imperative. Reciprocal peer tutoring (RPT) is an active teaching/learning approach, in which individuals from similar academic levels rotate teaching/learning roles. This study aimed to explore the outcomes of RPT on undergraduate nursing students learning. Design/Methods A sequential explanatory mixed methods design, incorporating pre-post intervention surveys and focus groups with a convenience sample of 102 final-year students, from a cohort of 132 (RR = 77.3%), from a regional Australian university campus. Prior to attendance, online resources were provided on teaching fundamentals and two selected clinical skills, namely tracheostomy suctioning and intravenous cannulation. Attending participants were randomly allocated into pairs, rotating teaching and learning roles within clinical skills laboratories. Pre-post intervention survey tools examined knowledge and self-reported attitudes to a peer teaching and clinical teaching preferences (Clinical Teaching Preference Questionnaire). Post-intervention measures included a peer teaching experience (Peer Teaching Experience Questionnaire). Focus group interviews (n = 4) were conducted with 22 participants, to further understand students’ RPT experiences. Results There was positive improvement in attitudes to peer teaching (M = 49.2, SD = 10.0 to M = 52.3, SD = 8.2, p < 0.05, [95% CI = 0.7 to 5.4]). Knowledge scores also increased significantly (M = 6.9, SD = 2.0 to M = 9.7, SD = 1.9), p < 0.05 [95% CI = 2.3 to 3.2]. Aggregate mean knowledge scores increased more for peer teachers (M = 3.3) than they did for peer learners (M = 2.2). Thematic outcomes from focus groups indicated challenging yet beneficial journeys, collective learning outcomes, along with benefits of RPT including enhanced teaching, self-confidence, communication, and independent and collaborative learning. Conclusion This study concludes that RPT is effective in clinical skills teaching and sets a foundation for further research.
- Description: Doctor of Philosophy
- Authors: Gazula, Swapnali
- Date: 2019
- Type: Text , Thesis , PhD
- Full Text:
- Description: Background Incorporation of active learning approaches in the preparation of nursing students for future educational roles is an imperative. Reciprocal peer tutoring (RPT) is an active teaching/learning approach, in which individuals from similar academic levels rotate teaching/learning roles. This study aimed to explore the outcomes of RPT on undergraduate nursing students learning. Design/Methods A sequential explanatory mixed methods design, incorporating pre-post intervention surveys and focus groups with a convenience sample of 102 final-year students, from a cohort of 132 (RR = 77.3%), from a regional Australian university campus. Prior to attendance, online resources were provided on teaching fundamentals and two selected clinical skills, namely tracheostomy suctioning and intravenous cannulation. Attending participants were randomly allocated into pairs, rotating teaching and learning roles within clinical skills laboratories. Pre-post intervention survey tools examined knowledge and self-reported attitudes to a peer teaching and clinical teaching preferences (Clinical Teaching Preference Questionnaire). Post-intervention measures included a peer teaching experience (Peer Teaching Experience Questionnaire). Focus group interviews (n = 4) were conducted with 22 participants, to further understand students’ RPT experiences. Results There was positive improvement in attitudes to peer teaching (M = 49.2, SD = 10.0 to M = 52.3, SD = 8.2, p < 0.05, [95% CI = 0.7 to 5.4]). Knowledge scores also increased significantly (M = 6.9, SD = 2.0 to M = 9.7, SD = 1.9), p < 0.05 [95% CI = 2.3 to 3.2]. Aggregate mean knowledge scores increased more for peer teachers (M = 3.3) than they did for peer learners (M = 2.2). Thematic outcomes from focus groups indicated challenging yet beneficial journeys, collective learning outcomes, along with benefits of RPT including enhanced teaching, self-confidence, communication, and independent and collaborative learning. Conclusion This study concludes that RPT is effective in clinical skills teaching and sets a foundation for further research.
- Description: Doctor of Philosophy
Anti-war, radical youth revolt, Victoria, 1965-1975
- Authors: Butler, Nicholas
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis is a political history of the emergence and evolution of selected radical, left, student and workers movements in Victoria between 1965 and 1975. It examines the development of radical alliances, demonstrations and public actions using documentary materials and oral accounts provided during interviews. It argues that the radical left movement in Victoria began within the Monash University Labor Club, which subsequently generated radical groups outside the university. During this timeframe, both military conscription for the Vietnam War and the war itself became focal points for oppositional political mobilisation in Victoria. In 1967, the Monash Labor Club’s disruptive campaign against university authority was sufficiently popular for the club to turn its attention to disrupting the war effort. Soon, its locus of operations shifted into the general anti-war movement and the Labor Club established new, non-student, and avowedly communist and revolutionary organisations. Roughly termed the “Maoists,” by 1970 these organisations coalesced into the Worker Student Alliance (WSA), which grew rapidly to become a “left-wing” body that challenged the leadership of the established “left” organisations. The cessation of Australia’s involvement in the Vietnam War removed a major cause for radical action and, despite the generation of some important campaigns to replace it, the WSA dissolved itself in 1974.
- Description: Doctor of Philosophy
- Authors: Butler, Nicholas
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis is a political history of the emergence and evolution of selected radical, left, student and workers movements in Victoria between 1965 and 1975. It examines the development of radical alliances, demonstrations and public actions using documentary materials and oral accounts provided during interviews. It argues that the radical left movement in Victoria began within the Monash University Labor Club, which subsequently generated radical groups outside the university. During this timeframe, both military conscription for the Vietnam War and the war itself became focal points for oppositional political mobilisation in Victoria. In 1967, the Monash Labor Club’s disruptive campaign against university authority was sufficiently popular for the club to turn its attention to disrupting the war effort. Soon, its locus of operations shifted into the general anti-war movement and the Labor Club established new, non-student, and avowedly communist and revolutionary organisations. Roughly termed the “Maoists,” by 1970 these organisations coalesced into the Worker Student Alliance (WSA), which grew rapidly to become a “left-wing” body that challenged the leadership of the established “left” organisations. The cessation of Australia’s involvement in the Vietnam War removed a major cause for radical action and, despite the generation of some important campaigns to replace it, the WSA dissolved itself in 1974.
- Description: Doctor of Philosophy
Avenue and Arch : Ballarat's commemoration. How are community attitudes to war and peace reflected in the civic management of the Avenue of Honour and the Arch of Victory?
- Authors: Roberts, Philip
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis examines the importance of memory, commemoration, heritage and militarism in relation to Ballarat’s Avenue of Honour and Arch of Victory. Inspired by Ken Inglis and other historians who have analysed war commemoration, the thesis argues that, led by the Lucas clothing company, Ballarat civic leaders and community members commemorated the war service and sacrifice of local soldiers, airmen, sailors and nurses by planting the 22-kilometre Avenue during 1917–19 and by constructing the prominent Arch in 1920. Although Ballarat voted against conscription in 1916 and 1917 and was a ‘divided’ society, the Avenue and Arch were able to unite members of the local community. From the 1920s, through memory and mythology during the civic maintenance of the Avenue and Arch, Australian community attitudes to war and peace were reflected, and a determined effort was made to remember the service and sacrifice of military personnel for all Australian wars. Discussion of the need for peace remained in the background until recent years. Important influences on the civic management were the collective memory of the so-called Lucas Girls, a group of former female employees of the Lucas clothing company, and of the members of the Arch of Victory/Avenue of Honour Committee. Increasingly, the embracing of the Anzac legend and an emphasis on loss and grief was reflected in the civic management. By 2017 the Avenue and Arch were in pristine condition and, through the Garden of the Grieving Mother, had transformed to symbolise the importance of remembering the sacrifices and grief of war and the need for peace. The project was based on documentary research and oral history, using an examination of newspaper and other documentary accounts from 1917–2017, a study of Arch of Victory/Avenue of Honour Committee papers and conservation management plans, research of relevant books and articles, landscape fieldwork and interviews with 26 people.
- Description: Doctor of Philosophy
- Authors: Roberts, Philip
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis examines the importance of memory, commemoration, heritage and militarism in relation to Ballarat’s Avenue of Honour and Arch of Victory. Inspired by Ken Inglis and other historians who have analysed war commemoration, the thesis argues that, led by the Lucas clothing company, Ballarat civic leaders and community members commemorated the war service and sacrifice of local soldiers, airmen, sailors and nurses by planting the 22-kilometre Avenue during 1917–19 and by constructing the prominent Arch in 1920. Although Ballarat voted against conscription in 1916 and 1917 and was a ‘divided’ society, the Avenue and Arch were able to unite members of the local community. From the 1920s, through memory and mythology during the civic maintenance of the Avenue and Arch, Australian community attitudes to war and peace were reflected, and a determined effort was made to remember the service and sacrifice of military personnel for all Australian wars. Discussion of the need for peace remained in the background until recent years. Important influences on the civic management were the collective memory of the so-called Lucas Girls, a group of former female employees of the Lucas clothing company, and of the members of the Arch of Victory/Avenue of Honour Committee. Increasingly, the embracing of the Anzac legend and an emphasis on loss and grief was reflected in the civic management. By 2017 the Avenue and Arch were in pristine condition and, through the Garden of the Grieving Mother, had transformed to symbolise the importance of remembering the sacrifices and grief of war and the need for peace. The project was based on documentary research and oral history, using an examination of newspaper and other documentary accounts from 1917–2017, a study of Arch of Victory/Avenue of Honour Committee papers and conservation management plans, research of relevant books and articles, landscape fieldwork and interviews with 26 people.
- Description: Doctor of Philosophy
Decision making processes within educated intercultural marriages in Australia
- Authors: Alnaimi, Suleiman
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: In recent years, the world–wide phenomena of globalization and increasingly flexible social norms have contributed to an increase in intercultural relationships, particularly in multicultural societies. Intercultural relationships have a higher risk of failure and lower marital satisfaction than same-culture marriages. The negotiation of important family decisions are known to lead to marital conflict, however few studies have examined how successful, intercultural couples make important decisions and maintain marital satisfaction. Six intercultural couples who met the criteria were recruited and interviewed (ie.12 individuals).Couples were interviewed longitudinally on how they make important family decisions. The educational levels of participants ranged from college degree to PhD degree. The participants represented diverse cultural backgrounds. The various racial and/or ethnic identifications of the intercultural married couples in this study represented the diversity of the racial and/or ethnic mixes in intercultural marriages within the general population. Prior to completing the conjoint, face to face interviews, each couple completed the Schwartz Value Survey to elicit their individual values. Values are known to motivate and underpin decisions and vary from culture to culture. Interviews revealed that, although cultural differences were clearly evident, these differences did not prevent effective decision making amongst intercultural couples. Instead, couples were successfully turning cultural differences into minor issues or even opportunities. Couples often managed three cultures within the nuclear family as all couples had children being raised in Australia. Couples reported that keys to marital success included developing common values, working towards agreed goals and awareness of their spouse’s culture, support and open communication. Intercultural couples interviewed displayed positive attitudes of commitment to their marriage, each other and family. Couples focused on what was best for the family when making decisions. They held firm beliefs that they were not that different from their partner, despite cultural differences. Themes to emerge from qualitative analysis of the interviews as factors underpinning successful inter-cultural marriages across the participants include shared faith, similar values and the creation of a third culture within an emerging global culture. Cultural differences were not found to be a significant factor when major family decisions were made. This thesis is the first to examine decision making among successful intercultural couples. Qualitative study has investigated couple decision-making from the same cultural background. This current study generates new insights on intercultural couple’s decision making processes, and provides unique perspectives on how successful, well-adjusted and highly educated intercultural couples negotiate important family decisions. The findings of this study have the potential to add to the limited knowledge available on intercultural marriage and cross-cultural adjustment and has implications for counsellors and marriage / family therapists working with cross-cultural couples.
- Description: Doctor of Philosophy
- Authors: Alnaimi, Suleiman
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: In recent years, the world–wide phenomena of globalization and increasingly flexible social norms have contributed to an increase in intercultural relationships, particularly in multicultural societies. Intercultural relationships have a higher risk of failure and lower marital satisfaction than same-culture marriages. The negotiation of important family decisions are known to lead to marital conflict, however few studies have examined how successful, intercultural couples make important decisions and maintain marital satisfaction. Six intercultural couples who met the criteria were recruited and interviewed (ie.12 individuals).Couples were interviewed longitudinally on how they make important family decisions. The educational levels of participants ranged from college degree to PhD degree. The participants represented diverse cultural backgrounds. The various racial and/or ethnic identifications of the intercultural married couples in this study represented the diversity of the racial and/or ethnic mixes in intercultural marriages within the general population. Prior to completing the conjoint, face to face interviews, each couple completed the Schwartz Value Survey to elicit their individual values. Values are known to motivate and underpin decisions and vary from culture to culture. Interviews revealed that, although cultural differences were clearly evident, these differences did not prevent effective decision making amongst intercultural couples. Instead, couples were successfully turning cultural differences into minor issues or even opportunities. Couples often managed three cultures within the nuclear family as all couples had children being raised in Australia. Couples reported that keys to marital success included developing common values, working towards agreed goals and awareness of their spouse’s culture, support and open communication. Intercultural couples interviewed displayed positive attitudes of commitment to their marriage, each other and family. Couples focused on what was best for the family when making decisions. They held firm beliefs that they were not that different from their partner, despite cultural differences. Themes to emerge from qualitative analysis of the interviews as factors underpinning successful inter-cultural marriages across the participants include shared faith, similar values and the creation of a third culture within an emerging global culture. Cultural differences were not found to be a significant factor when major family decisions were made. This thesis is the first to examine decision making among successful intercultural couples. Qualitative study has investigated couple decision-making from the same cultural background. This current study generates new insights on intercultural couple’s decision making processes, and provides unique perspectives on how successful, well-adjusted and highly educated intercultural couples negotiate important family decisions. The findings of this study have the potential to add to the limited knowledge available on intercultural marriage and cross-cultural adjustment and has implications for counsellors and marriage / family therapists working with cross-cultural couples.
- Description: Doctor of Philosophy
The contribution of silverfish (insecta: zygentoma) to Australian invertebrate biodiversity and endemism
- Authors: Smith, Graeme
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: Silverfish (Order Zygentoma) are quite abundant in Australia but have been largely overlooked. This thesis examines the biodiversity of the Australian fauna at the level of genus, describing at least one representative species from each named genus and some new genera. The endemism of the fauna is evaluated and likely zoogeographic origins proposed. Over 4000 specimens were examined, either collected by the author, borrowed from or examined within museum collections or supplied by organisations and individuals conducting fauna surveys. Twenty- seven new native species are described and two redescribed, bringing the number of named species recorded in Australia to 74. Five new genera are described and four additional genera recorded in Australia for the first time including autochthonous representatives of three subfamilies previously unrecognised as native to Australia (Acrotelsatinae, Lepismatinae and Coletiniinae). No representatives of the families Maindroniidae, Tricholepidiidae and Protrinemuridae were found. The subfamily Acrotelsatinae was redefined following a revision of the enigmatic genus Anisolepisma Paclt, 1967 with the unique structure of the thoracic sterna identified as diagnostic for the subfamily. Contrary to existing opinion, it is suggested that this is a fundamentally different and plesiomorphic character, rather than an apomorphic reduction of the free thoracic sterna. A monograph of the Australian Zygentoma is presented, including a summary of the biology of the order, a key to and diagnoses of the genera, as well as information on the known habitat and distribution of each genus and a discussion of their zoogeography. At the suprageneric level the fauna is less diverse than seen in other zoogeographic regions but appears to be rich in the number of species. The fauna displays a high degree of endemism with 91% of described species and 52% of the genera known only from Australia. Some genera appear to be ancient and probably represent a Pangean element in the Australian fauna. Others appear to have emerged in the late Jurassic when Africa was still joined to Gondwana, while some may have appeared in the Cretaceous or Palaeocene when Australia and South America were connected to Gondwana. More recent links with the Asian fauna are limited and there appears to be no widespread highly mobile global species other than the six introduced anthropophilic species. Maps of the worldwide distribution records extracted from the taxonomic literature are used to discuss the zoogeography of the subfamilies and tribes present in Australia. Molecular data using two mitochondrial genes (16S and COI) as well as a nuclear gene (28S) were compared with detailed morphological and morphometric analysis to examine populations initially determined as Heterolepisma sclerophylla or close to it. Distances of 0.9– 1.8% or greater in 28S, and 7.2–14% in COI were associated with morphologically distinct species. A southern Queensland population was found to be genetically, morphometrically and morphologically very distinct from those collected in NSW and was described as new (Heterolepisma sp. B). Six well-defined barcode clusters (“lineages”) were identified within the NSW populations, each with >4% divergence in COI sequences and each geographically restricted. Intracluster divergences are also large, and despite the well-supported phylogeny no clear “barcode gap” (distinction between intracluster and intercluster distances) was found for three of the six NSW populations. The 28S data distinguished only four of the six COI clusters from NSW with essentially no variation within each cluster. The 28S data generally aligned well with morphological evidence, clearly identifying Heterolepisma sp. B as a distinct species, and supporting also the description of Heterolepisma sp. A even though it only appears to differ from H. sclerophylla in the number of styli. Similar genetic distances are observed in 28S data for H. sclerophylla populations from North Nowra, Glenbrook/Burralow/Nattai and Megalong, however the Broulee and Wellington populations have identical 28S sequences. The low levels of variation in 28S sequences between NSW populations accord with the lack of unambiguous morphological differences.
- Description: Doctor of Philosophy
- Authors: Smith, Graeme
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: Silverfish (Order Zygentoma) are quite abundant in Australia but have been largely overlooked. This thesis examines the biodiversity of the Australian fauna at the level of genus, describing at least one representative species from each named genus and some new genera. The endemism of the fauna is evaluated and likely zoogeographic origins proposed. Over 4000 specimens were examined, either collected by the author, borrowed from or examined within museum collections or supplied by organisations and individuals conducting fauna surveys. Twenty- seven new native species are described and two redescribed, bringing the number of named species recorded in Australia to 74. Five new genera are described and four additional genera recorded in Australia for the first time including autochthonous representatives of three subfamilies previously unrecognised as native to Australia (Acrotelsatinae, Lepismatinae and Coletiniinae). No representatives of the families Maindroniidae, Tricholepidiidae and Protrinemuridae were found. The subfamily Acrotelsatinae was redefined following a revision of the enigmatic genus Anisolepisma Paclt, 1967 with the unique structure of the thoracic sterna identified as diagnostic for the subfamily. Contrary to existing opinion, it is suggested that this is a fundamentally different and plesiomorphic character, rather than an apomorphic reduction of the free thoracic sterna. A monograph of the Australian Zygentoma is presented, including a summary of the biology of the order, a key to and diagnoses of the genera, as well as information on the known habitat and distribution of each genus and a discussion of their zoogeography. At the suprageneric level the fauna is less diverse than seen in other zoogeographic regions but appears to be rich in the number of species. The fauna displays a high degree of endemism with 91% of described species and 52% of the genera known only from Australia. Some genera appear to be ancient and probably represent a Pangean element in the Australian fauna. Others appear to have emerged in the late Jurassic when Africa was still joined to Gondwana, while some may have appeared in the Cretaceous or Palaeocene when Australia and South America were connected to Gondwana. More recent links with the Asian fauna are limited and there appears to be no widespread highly mobile global species other than the six introduced anthropophilic species. Maps of the worldwide distribution records extracted from the taxonomic literature are used to discuss the zoogeography of the subfamilies and tribes present in Australia. Molecular data using two mitochondrial genes (16S and COI) as well as a nuclear gene (28S) were compared with detailed morphological and morphometric analysis to examine populations initially determined as Heterolepisma sclerophylla or close to it. Distances of 0.9– 1.8% or greater in 28S, and 7.2–14% in COI were associated with morphologically distinct species. A southern Queensland population was found to be genetically, morphometrically and morphologically very distinct from those collected in NSW and was described as new (Heterolepisma sp. B). Six well-defined barcode clusters (“lineages”) were identified within the NSW populations, each with >4% divergence in COI sequences and each geographically restricted. Intracluster divergences are also large, and despite the well-supported phylogeny no clear “barcode gap” (distinction between intracluster and intercluster distances) was found for three of the six NSW populations. The 28S data distinguished only four of the six COI clusters from NSW with essentially no variation within each cluster. The 28S data generally aligned well with morphological evidence, clearly identifying Heterolepisma sp. B as a distinct species, and supporting also the description of Heterolepisma sp. A even though it only appears to differ from H. sclerophylla in the number of styli. Similar genetic distances are observed in 28S data for H. sclerophylla populations from North Nowra, Glenbrook/Burralow/Nattai and Megalong, however the Broulee and Wellington populations have identical 28S sequences. The low levels of variation in 28S sequences between NSW populations accord with the lack of unambiguous morphological differences.
- Description: Doctor of Philosophy
Visiting Friends and Relatives (VFR) travel in Australia : An examination of the role of VFR hosts
- Authors: Yousuf, Mohammad
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: Visiting Friends and Relatives (VFR) travel is a significant form of travel in terms of global travel numbers. However, research on VFR travel is small relative to its size. In particular, research regarding the role of hosts of VFR travellers in shaping their trips including travel decisions and activities has been examined by few researchers. No previous research explored the differences in hosting between immigrant and non-immigrant local residents despite VFR travel being commonly associated with migration in existing literature. Before this research, the differences between hosting friends and relatives had been neglected, resulting in VFR hosts being treated as one homogenous group. Previous research also failed to empirically test the influence of destination on the hosting of VFRs. Thus, this is the first study examining the hosting of VFRs through combining how migration, relationship types, and destination types, impact VFR travel experiences for hosts. Given that VFR travel is a significant component of Australia’s visitor numbers, and that it comprises a large immigrant population, Australia is a suitable setting for this study. Considering the multi-dimensional elements in the study, the “VFR Whole Tourism Systems Model” was used as the conceptual model for this study. Quantitative research was conducted nationally with 331 residents, collected through an online survey, assessing the differences and similarities in hosting behaviours. Qualitative research was undertaken through in-depth interviews with 34 local residents in three contrasting destinations in Victoria understanding the social interactions between VFR hosts and their visiting friends/relatives. Significant differences were found between immigrants and nonimmigrants regarding attracting VFRs and hosting experiences. Differences were also noted between hosting friends versus hosting relatives, and it was also determined that the destination types impact VFR hosting. Such findings have provided valuable insights regarding the economic and social benefits of promoting local marketing campaign targeting local residents.
- Description: Doctor of Philosophy
- Authors: Yousuf, Mohammad
- Date: 2018
- Type: Text , Thesis , PhD
- Full Text:
- Description: Visiting Friends and Relatives (VFR) travel is a significant form of travel in terms of global travel numbers. However, research on VFR travel is small relative to its size. In particular, research regarding the role of hosts of VFR travellers in shaping their trips including travel decisions and activities has been examined by few researchers. No previous research explored the differences in hosting between immigrant and non-immigrant local residents despite VFR travel being commonly associated with migration in existing literature. Before this research, the differences between hosting friends and relatives had been neglected, resulting in VFR hosts being treated as one homogenous group. Previous research also failed to empirically test the influence of destination on the hosting of VFRs. Thus, this is the first study examining the hosting of VFRs through combining how migration, relationship types, and destination types, impact VFR travel experiences for hosts. Given that VFR travel is a significant component of Australia’s visitor numbers, and that it comprises a large immigrant population, Australia is a suitable setting for this study. Considering the multi-dimensional elements in the study, the “VFR Whole Tourism Systems Model” was used as the conceptual model for this study. Quantitative research was conducted nationally with 331 residents, collected through an online survey, assessing the differences and similarities in hosting behaviours. Qualitative research was undertaken through in-depth interviews with 34 local residents in three contrasting destinations in Victoria understanding the social interactions between VFR hosts and their visiting friends/relatives. Significant differences were found between immigrants and nonimmigrants regarding attracting VFRs and hosting experiences. Differences were also noted between hosting friends versus hosting relatives, and it was also determined that the destination types impact VFR hosting. Such findings have provided valuable insights regarding the economic and social benefits of promoting local marketing campaign targeting local residents.
- Description: Doctor of Philosophy
10 Days in 2009 : An auto-ethnographical study of "Communical Resistance" taken by international students in Australia
- Authors: Saunders, Owen
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: The early millennium saw the rise of an educational system in Australia where unchartered private educational provider institutions teach degree courses via contractual arrangements with parent universities. This study examines an incident where students at several such institutions collectively declined to submit a required online assessment piece to the possible detriment of the successful completion of their degrees. The research questions that arose from this incident were; what went wrong; how can we understand what happened here; and, what does this mean for me personally? Students’ perceptions of an online assessment piece are examined in the study of this incident. The study covers identical units offered at six private providers in three different Australian cities and the parent university. The students at the private institutions were all international students; those at the parent were a mix of international and domestic students. The assessment piece, a mandatory requirement for completion of the degree, was given to a collective cohort of approximately 400 students. The majority of students from four of the private institutions declined to submit the assessment piece. Initial research indicated that the students were uncomfortable with the format of a new blended-learning delivery introduced that year (2009). Upon deeper investigation, it was revealed that the declination to submit was, in fact, a complex situation involving conflicts, cultural clashes, social upheaval, and legislative misunderstandings that combined to create an environment where the students felt they had no option but to openly protest against perceived injustices. The author of this work is also the educator at the centre of this event, thus the thesis has been written in an auto-ethnographical method, viewed through the educator’s lens. To protect sensitive information, pseudonyms have been used and identifying details removed. The parent university at the centre of the event, named Newgarth University, is fictitious. Auto-ethnography has been used to present the empirical data (quantitative and qualitative), and the reader will be taken through a “detective story” that reveals various characters, plots, and protest. The study documents a previously unrecorded incident in the international student education industry in Australia. The study offers explanations as to why this incident occurred and adds to the cumulative knowledge of the international student education industry in Australia by offering suggestions to prevent such incidents occurring again. The study demonstrates that when a group of students are placed in an unfamiliar uncomfortable environment with little or no access to pastoral care or welfare services, they will create support groups of allegiance to protect their interests. These allegiance groups will employ tried and tested methods of communal resistance practised by the dominant culture of that field of endeavour.
- Description: Doctor of Philosophy
- Authors: Saunders, Owen
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: The early millennium saw the rise of an educational system in Australia where unchartered private educational provider institutions teach degree courses via contractual arrangements with parent universities. This study examines an incident where students at several such institutions collectively declined to submit a required online assessment piece to the possible detriment of the successful completion of their degrees. The research questions that arose from this incident were; what went wrong; how can we understand what happened here; and, what does this mean for me personally? Students’ perceptions of an online assessment piece are examined in the study of this incident. The study covers identical units offered at six private providers in three different Australian cities and the parent university. The students at the private institutions were all international students; those at the parent were a mix of international and domestic students. The assessment piece, a mandatory requirement for completion of the degree, was given to a collective cohort of approximately 400 students. The majority of students from four of the private institutions declined to submit the assessment piece. Initial research indicated that the students were uncomfortable with the format of a new blended-learning delivery introduced that year (2009). Upon deeper investigation, it was revealed that the declination to submit was, in fact, a complex situation involving conflicts, cultural clashes, social upheaval, and legislative misunderstandings that combined to create an environment where the students felt they had no option but to openly protest against perceived injustices. The author of this work is also the educator at the centre of this event, thus the thesis has been written in an auto-ethnographical method, viewed through the educator’s lens. To protect sensitive information, pseudonyms have been used and identifying details removed. The parent university at the centre of the event, named Newgarth University, is fictitious. Auto-ethnography has been used to present the empirical data (quantitative and qualitative), and the reader will be taken through a “detective story” that reveals various characters, plots, and protest. The study documents a previously unrecorded incident in the international student education industry in Australia. The study offers explanations as to why this incident occurred and adds to the cumulative knowledge of the international student education industry in Australia by offering suggestions to prevent such incidents occurring again. The study demonstrates that when a group of students are placed in an unfamiliar uncomfortable environment with little or no access to pastoral care or welfare services, they will create support groups of allegiance to protect their interests. These allegiance groups will employ tried and tested methods of communal resistance practised by the dominant culture of that field of endeavour.
- Description: Doctor of Philosophy
A financial stress index to model and forecast financial stress in Australia
- Authors: Mukulu, Sandra
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: The series of financial crises that cascaded through and rocked much of the world over the past decade created opportunities to draw meaning from the pattern of countries succumbing to crisis and those who appear to be wholly or partially immune. This thesis examines the case of Australia, a developed country that has seldom experienced an endogenous crisis in the last few decades, but has experienced crisis by contagion. This study designs a financial stress index to measure and forecast the health of the Australian economy and proposes a custom-made stress index to: Gauge the potential for a crisis; and Signal when a timely intervention may minimise fear and contagion losses in the Australian financial market. Financial and economic data is used to design indicators for stress in the banking sector and equity, currency and bond markets. Further, this study explores how movements in equity markets of key trading partners of Australia can be used to predict movements in the Australian equity market. The variance-equal weights (VEW) and principal components approach (PCA) are used to subsume 22 stress indicators into a composite stress index. The VEW and PCA stress indexes were examined to determine monitoring and their forecasting capabilities. It was found that the VEW stress index performed better than the PCA stress index, because it provided more consistent estimates for the level of Australian financial stress. Although, both models show some promise, each model fell short of giving adequate forecasts in financial stress especially at the peak time of the 2007-2009 GFC. Thus, more research is needed to understand the complex nature of financial crisis, how crises develop and the techniques that can be used to predict the onset of financial crises.
- Description: Doctor of Philosophy
- Authors: Mukulu, Sandra
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: The series of financial crises that cascaded through and rocked much of the world over the past decade created opportunities to draw meaning from the pattern of countries succumbing to crisis and those who appear to be wholly or partially immune. This thesis examines the case of Australia, a developed country that has seldom experienced an endogenous crisis in the last few decades, but has experienced crisis by contagion. This study designs a financial stress index to measure and forecast the health of the Australian economy and proposes a custom-made stress index to: Gauge the potential for a crisis; and Signal when a timely intervention may minimise fear and contagion losses in the Australian financial market. Financial and economic data is used to design indicators for stress in the banking sector and equity, currency and bond markets. Further, this study explores how movements in equity markets of key trading partners of Australia can be used to predict movements in the Australian equity market. The variance-equal weights (VEW) and principal components approach (PCA) are used to subsume 22 stress indicators into a composite stress index. The VEW and PCA stress indexes were examined to determine monitoring and their forecasting capabilities. It was found that the VEW stress index performed better than the PCA stress index, because it provided more consistent estimates for the level of Australian financial stress. Although, both models show some promise, each model fell short of giving adequate forecasts in financial stress especially at the peak time of the 2007-2009 GFC. Thus, more research is needed to understand the complex nature of financial crisis, how crises develop and the techniques that can be used to predict the onset of financial crises.
- Description: Doctor of Philosophy
Algae-based models to configure consumptive flows for ecological benefit in the highly regulated MacKenzie River, south-east Australia
- Authors: Atazadeh, Ehsan
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Many river ecosystems, especially those in arid and semi-arid, are experiencing severe stress due to the increasing demands on the ecosystem services they provide, coupled with anthropogenic catchment impacts and factors associated with climate change and weather extremes. The flow regime of the Mackenzie River was substantially modified since the construction of a water supply reservoir on its upper reach in 1887. Water is now regulated at several locations downstream of the reservoir, creating a substantially modified flow regime, impacting key environmental values of the river. The river receives an environmental flow allocation and the river channel is used to transfer water dedicated for consumptive use. Water Quality and algal monitoring formed the basis of models that were developed evaluate the ecological condition of this working river under base flow and before, during and after freshes that deliver water to users. Samples of diatoms, soft algae and measurements of water quality were analysed at ten sampling sites for three years (between February 2012 and November 2014) along the MacKenzie River in different seasons and under different flow regimes to understand the spatial and temporal variation in the relationship between algal communities and water quality, and so stream condition. Baseline information on algal communities and water quality was collected during base flow conditions, while experiments on the effect of water releases on algal communities were based on flow regime variations (manipulated flow regimes), specifically on the algae community structure, water quality and ecosystem function. These comprised cease to flow (0 ML/day), low flows (10-15 ML/day), freshes (35-40 ML/day) and high flow (55ML/day) conditions. Physical and chemical characteristics of water, including pH, temperature, turbidity, electrical conductivity, dissolved oxygen, total nitrogen, phosphorus and cations and anions were measured. Biological properties of the algal periphyton communities, including dry mass, ash-free dry mass, chlorophyll-a concentration and species composition, were also measured. Furthermore, the DSIAR (Diatom Species Index for Australian Rivers) score was calculated to classify the condition of the waterway. The results showed the algal species composition changed under different flow regimes along the river. The sensitivity of diatoms to changes in water quality and flow rates deemed them useful indicators of river condition. The results indicated that flows tended to improve DSIAR scores and diatoms versus green algae and cyanobacteria biomass measures in the mid and lower reaches. The biological properties of the algal periphyton communities, and the species composition, varied between sites under different flow regimes. The accumulation of dry mass (not ash-free) decreased downstream during freshes, however the accumulation of AFDM (ash-free dry mass) gradually increased downstream. The results showed that the concentration of chlorophyll-a decreased downstream under water release events. The Pearson’s correlation matrix revealed flow regimes had a significant influence on the water chemistry characteristics and biological properties. The principal component analysis (PCA) illustrated that upstream species of algae were associated with low pH and temperature and higher DO. In contrast downstream species were associated with higher turbidity, TSS, conductivity, TN, and TDS. The correspondence analysis (CA) and detrended correspondence analysis (DCA) showed a split between algal assemblages during water release events in comparison with before and after water release. The canonical correspondence analysis (CCA) identified five significant environmental variables including pH, TSS, Turbidity, TN and TP explaining algal assemblage and structure along the river. The collected data were used to develop ecological response models based on algae communities living under different flow regimes in the MacKenzie River. The algae-based models across a hydraulic gradient may be useful in water management efforts to find sustainable solutions in the river by balancing environmental and human values. The empirical data and models showed the lower reaches of the river to be in poor condition under low flows, but this condition improved under flows of 35 ML/day, as indicated by the reduction in green algae and cyanobacteria and improvement in DSIAR scores. The results are presented to tailor discharge and duration of the river flows by amalgamation of consumptive and environmental flows to improve the condition of the stream thereby supplementing the flows dedicated to environmental outcomes. Ultimately the findings can be used by management to configure consumptive flows to enhance the for ecological condition of the MacKenzie River.
- Description: Doctor of Philosophy
- Authors: Atazadeh, Ehsan
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Many river ecosystems, especially those in arid and semi-arid, are experiencing severe stress due to the increasing demands on the ecosystem services they provide, coupled with anthropogenic catchment impacts and factors associated with climate change and weather extremes. The flow regime of the Mackenzie River was substantially modified since the construction of a water supply reservoir on its upper reach in 1887. Water is now regulated at several locations downstream of the reservoir, creating a substantially modified flow regime, impacting key environmental values of the river. The river receives an environmental flow allocation and the river channel is used to transfer water dedicated for consumptive use. Water Quality and algal monitoring formed the basis of models that were developed evaluate the ecological condition of this working river under base flow and before, during and after freshes that deliver water to users. Samples of diatoms, soft algae and measurements of water quality were analysed at ten sampling sites for three years (between February 2012 and November 2014) along the MacKenzie River in different seasons and under different flow regimes to understand the spatial and temporal variation in the relationship between algal communities and water quality, and so stream condition. Baseline information on algal communities and water quality was collected during base flow conditions, while experiments on the effect of water releases on algal communities were based on flow regime variations (manipulated flow regimes), specifically on the algae community structure, water quality and ecosystem function. These comprised cease to flow (0 ML/day), low flows (10-15 ML/day), freshes (35-40 ML/day) and high flow (55ML/day) conditions. Physical and chemical characteristics of water, including pH, temperature, turbidity, electrical conductivity, dissolved oxygen, total nitrogen, phosphorus and cations and anions were measured. Biological properties of the algal periphyton communities, including dry mass, ash-free dry mass, chlorophyll-a concentration and species composition, were also measured. Furthermore, the DSIAR (Diatom Species Index for Australian Rivers) score was calculated to classify the condition of the waterway. The results showed the algal species composition changed under different flow regimes along the river. The sensitivity of diatoms to changes in water quality and flow rates deemed them useful indicators of river condition. The results indicated that flows tended to improve DSIAR scores and diatoms versus green algae and cyanobacteria biomass measures in the mid and lower reaches. The biological properties of the algal periphyton communities, and the species composition, varied between sites under different flow regimes. The accumulation of dry mass (not ash-free) decreased downstream during freshes, however the accumulation of AFDM (ash-free dry mass) gradually increased downstream. The results showed that the concentration of chlorophyll-a decreased downstream under water release events. The Pearson’s correlation matrix revealed flow regimes had a significant influence on the water chemistry characteristics and biological properties. The principal component analysis (PCA) illustrated that upstream species of algae were associated with low pH and temperature and higher DO. In contrast downstream species were associated with higher turbidity, TSS, conductivity, TN, and TDS. The correspondence analysis (CA) and detrended correspondence analysis (DCA) showed a split between algal assemblages during water release events in comparison with before and after water release. The canonical correspondence analysis (CCA) identified five significant environmental variables including pH, TSS, Turbidity, TN and TP explaining algal assemblage and structure along the river. The collected data were used to develop ecological response models based on algae communities living under different flow regimes in the MacKenzie River. The algae-based models across a hydraulic gradient may be useful in water management efforts to find sustainable solutions in the river by balancing environmental and human values. The empirical data and models showed the lower reaches of the river to be in poor condition under low flows, but this condition improved under flows of 35 ML/day, as indicated by the reduction in green algae and cyanobacteria and improvement in DSIAR scores. The results are presented to tailor discharge and duration of the river flows by amalgamation of consumptive and environmental flows to improve the condition of the stream thereby supplementing the flows dedicated to environmental outcomes. Ultimately the findings can be used by management to configure consumptive flows to enhance the for ecological condition of the MacKenzie River.
- Description: Doctor of Philosophy
Historical mine sites as modern-day sources of contamination : Measurement and characterisation of arsenic in historical gold mine wastes to identify the potential for mobility and human exposure
- Authors: Martin, Rachael
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Centuries of metalliferous mining activities have resulted in a legacy of contamination throughout the world. Unremediated mine wastes and tailings, as well as contaminated soils, water and sediments, represent ongoing sources of environmental degradation and human exposure, long after mine closure and abandonment. Despite global concern over these contaminant sources, there remain uncertainties surrounding the nature of human exposure to mine wastes and their toxicologically relevant characteristics. As urbanisation expands into areas proximal to abandoned mine sites, an understanding of the human-contaminant interface at this boundary is critical for assessing the potential health risks. This thesis addresses this knowledge gap by investigating the importance of particle size as a factor governing the distribution of metals and metalloids in historical gold mine wastes in regional Victoria, Australia, with an emphasis on arsenic as a contaminant of potential concern. By characterising those particle size fractions that are relevant to dust mobilisation and human exposure, this thesis examines the human-contaminant interface using a multi-pathway approach. In particular, this thesis focuses on the potential for exposure via inhalation of mine waste particulates. The outcomes of the studies presented in this body of work demonstrate that historical gold mine wastes in regional Victoria represent a source of readily ingestible and inhalable particulates characterised by extremely elevated levels of arsenic (and other contaminants) well above their bulk (in situ) concentrations. Although lung bioaccessibility testing and mineralogical analyses revealed that most of the arsenic in inhalable dust has been naturally immobilised, the lung-soluble fraction should be considered when undertaking risk assessments for chronic exposure. This thesis provides a framework for the development of targeted management strategies for unremediated historical gold mining wastes in regional Victoria. The findings suggest there is a need for environmental regulations to shift from generic guideline values to exposure-specific guidelines that more accurately reflect the human health risks posed by historical mine sites. This thesis has emphasised the notion that in order for remedial action to accurately match the level of risk, the sourcepathway- receptor linkage must be evaluated using a systematic size-resolved approach.
- Description: Doctor of Philosophy
- Authors: Martin, Rachael
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Centuries of metalliferous mining activities have resulted in a legacy of contamination throughout the world. Unremediated mine wastes and tailings, as well as contaminated soils, water and sediments, represent ongoing sources of environmental degradation and human exposure, long after mine closure and abandonment. Despite global concern over these contaminant sources, there remain uncertainties surrounding the nature of human exposure to mine wastes and their toxicologically relevant characteristics. As urbanisation expands into areas proximal to abandoned mine sites, an understanding of the human-contaminant interface at this boundary is critical for assessing the potential health risks. This thesis addresses this knowledge gap by investigating the importance of particle size as a factor governing the distribution of metals and metalloids in historical gold mine wastes in regional Victoria, Australia, with an emphasis on arsenic as a contaminant of potential concern. By characterising those particle size fractions that are relevant to dust mobilisation and human exposure, this thesis examines the human-contaminant interface using a multi-pathway approach. In particular, this thesis focuses on the potential for exposure via inhalation of mine waste particulates. The outcomes of the studies presented in this body of work demonstrate that historical gold mine wastes in regional Victoria represent a source of readily ingestible and inhalable particulates characterised by extremely elevated levels of arsenic (and other contaminants) well above their bulk (in situ) concentrations. Although lung bioaccessibility testing and mineralogical analyses revealed that most of the arsenic in inhalable dust has been naturally immobilised, the lung-soluble fraction should be considered when undertaking risk assessments for chronic exposure. This thesis provides a framework for the development of targeted management strategies for unremediated historical gold mining wastes in regional Victoria. The findings suggest there is a need for environmental regulations to shift from generic guideline values to exposure-specific guidelines that more accurately reflect the human health risks posed by historical mine sites. This thesis has emphasised the notion that in order for remedial action to accurately match the level of risk, the sourcepathway- receptor linkage must be evaluated using a systematic size-resolved approach.
- Description: Doctor of Philosophy
Rainfall prediction in Australia : Clusterwise linear regression approach
- Authors: Mahmood, Arshad
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Accurate rainfall prediction is a challenging task because of the complex physical processes involved. This complexity is compounded in Australia as the climate can be highly variable. Accurate rainfall prediction is immensely benecial for making informed policy, planning and management decisions, and can assist with the most sustainable operation of water resource systems. Short-term prediction of rainfall is provided by meteorological services; however, the intermediate to long-term prediction of rainfall remains challenging and contains much uncertainty. Many prediction approaches have been proposed in the literature, including statistical and computational intelligence approaches. However, finding a method to model the complex physical process of rainfall, especially in Australia where the climate is highly variable, is still a major challenge. The aims of this study are to: (a) develop an optimization based clusterwise linear regression method, (b) develop new prediction methods based on clusterwise linear regression, (c) assess the influence of geographic regions on the performance of prediction models in predicting monthly and weekly rainfall in Australia, (d) determine the combined influence of meteorological variables on rainfall prediction in Australia, and (e) carry out a comparative analysis of new and existing prediction techniques using Australian rainfall data. In this study, rainfall data with five input meteorological variables from 24 geographically diverse weather stations in Australia, over the period January 1970 to December 2014, have been taken from the Scientific Information for Land Owners (SILO). We also consider the climate zones when selecting weather stations, because Australia experiences a variety of climates due to its size. The data was divided into training and testing periods for evaluation purposes. In this study, optimization based clusterwise linear regression is modified and new prediction methods are developed for rainfall prediction. The proposed method is applied to predict monthly and weekly rainfall. The prediction performance of the clusterwise linear regression method was evaluated by comparing observed and predicted rainfall values using the performance measures: root mean squared error, the mean absolute error, the mean absolute scaled error and the Nash-Sutclie coefficient of efficiency. The proposed method is also compared with the clusterwise linear regression based on the maximum likelihood estimation, linear support vector machines for regression, support vector machines for regression with radial basis kernel function, multiple linear regression, artificial neural networks with and without hidden layer and k-nearest neighbours methods using computational results. Initially, to determine the appropriate input variables to be used in the investigation, we assessed all combinations of meteorological variables. The results confirm that single meteorological variables alone are unable to predict rainfall accurately. The prediction performance of all selected models was improved by adding the input variables in most locations. To assess the influence of geographic regions on the performance of prediction models and to compare the prediction performance of models, we trained models with the best combination of input variables and predicted monthly and weekly rainfall over the test periods. The results of this analysis confirm that the prediction performance of all selected models varied considerably with geographic regions for both weekly and monthly rainfall predictions. It is found that models have the lowest prediction error in the desert climate zone and highest in subtropical and tropical zones. The results also demonstrate that the proposed algorithm is capable of finding the patterns and trends of the observations for monthly and weekly rainfall predictions in all geographic regions. In desert, tropical and subtropical climate zones, the proposed method outperform other methods in most locations for both monthly and weekly rainfall predictions. In temperate and grassland zones the prediction performance of the proposed model is better in some locations while in the remaining locations it is slightly lower than the other models.
- Description: Doctor of Philosophy
- Description: Accurate rainfall prediction is a challenging task because of the complex physical processes involved. This complexity is compounded in Australia as the climate can be highly variable. Accurate rainfall prediction is immensely benecial for making informed policy, planning and management decisions, and can assist with the most sustainable operation of water resource systems. Short-term prediction of rainfall is provided by meteorological services; however, the intermediate to long-term prediction of rainfall remains challenging and contains much uncertainty. Many prediction approaches have been proposed in the literature, including statistical and computational intelligence approaches. However, finding a method to model the complex physical process of rainfall, especially in Australia where the climate is highly variable, is still a major challenge. The aims of this study are to: (a) develop an optimization based clusterwise linear regression method, (b) develop new prediction methods based on clusterwise linear regression, (c) assess the influence of geographic regions on the performance of prediction models in predicting monthly and weekly rainfall in Australia, (d) determine the combined influence of meteorological variables on rainfall prediction in Australia, and (e) carry out a comparative analysis of new and existing prediction techniques using Australian rainfall data. In this study, rainfall data with five input meteorological variables from 24 geographically diverse weather stations in Australia, over the period January 1970 to December 2014, have been taken from the Scientific Information for Land Owners (SILO). We also consider the climate zones when selecting weather stations, because Australia experiences a variety of climates due to its size. The data was divided into training and testing periods for evaluation purposes. In this study, optimization based clusterwise linear regression is modified and new prediction methods are developed for rainfall prediction. The proposed method is applied to predict monthly and weekly rainfall. The prediction performance of the clusterwise linear regression method was evaluated by comparing observed and predicted rainfall values using the performance measures: root mean squared error, the mean absolute error, the mean absolute scaled error and the Nash-Sutclie coefficient of efficiency. The proposed method is also compared with the clusterwise linear regression based on the maximum likelihood estimation, linear support vector machines for regression, support vector machines for regression with radial basis kernel function, multiple linear regression, artificial neural networks with and without hidden layer and k-nearest neighbors methods using computational results. Initially, to determine the appropriate input variables to be used in the investigation, we assessed all combinations of meteorological variables. The results confirm that single meteorological variables alone are unable to predict rainfall accurately. The prediction performance of all selected models was improved by adding the input variables in most locations. To assess the influence of geographic regions on the performance of prediction models and to compare the prediction performance of models, we trained models with the best combination of input variables and predicted monthly and weekly rainfall over the test periods. The results of this analysis confirm that the prediction performance of all selected models varied considerably with geographic regions for both weekly and monthly rainfall predictions. It is found that models have the lowest prediction error in the desert climate zone and highest in subtropical and tropical zones. The results also demonstrate that the proposed algorithm is capable of finding the patterns and trends of the observations for monthly and weekly rainfall predictions in all geographic regions. In desert, tropical and subtropical climate zones, the proposed method outperform other methods in most locations for both monthly and weekly rainfall predictions. In temperate and grassland zones the prediction performance of the proposed model is better in some locations while in the remaining locations it is slightly lower than the other models.
- Authors: Mahmood, Arshad
- Date: 2017
- Type: Text , Thesis , PhD
- Full Text:
- Description: Accurate rainfall prediction is a challenging task because of the complex physical processes involved. This complexity is compounded in Australia as the climate can be highly variable. Accurate rainfall prediction is immensely benecial for making informed policy, planning and management decisions, and can assist with the most sustainable operation of water resource systems. Short-term prediction of rainfall is provided by meteorological services; however, the intermediate to long-term prediction of rainfall remains challenging and contains much uncertainty. Many prediction approaches have been proposed in the literature, including statistical and computational intelligence approaches. However, finding a method to model the complex physical process of rainfall, especially in Australia where the climate is highly variable, is still a major challenge. The aims of this study are to: (a) develop an optimization based clusterwise linear regression method, (b) develop new prediction methods based on clusterwise linear regression, (c) assess the influence of geographic regions on the performance of prediction models in predicting monthly and weekly rainfall in Australia, (d) determine the combined influence of meteorological variables on rainfall prediction in Australia, and (e) carry out a comparative analysis of new and existing prediction techniques using Australian rainfall data. In this study, rainfall data with five input meteorological variables from 24 geographically diverse weather stations in Australia, over the period January 1970 to December 2014, have been taken from the Scientific Information for Land Owners (SILO). We also consider the climate zones when selecting weather stations, because Australia experiences a variety of climates due to its size. The data was divided into training and testing periods for evaluation purposes. In this study, optimization based clusterwise linear regression is modified and new prediction methods are developed for rainfall prediction. The proposed method is applied to predict monthly and weekly rainfall. The prediction performance of the clusterwise linear regression method was evaluated by comparing observed and predicted rainfall values using the performance measures: root mean squared error, the mean absolute error, the mean absolute scaled error and the Nash-Sutclie coefficient of efficiency. The proposed method is also compared with the clusterwise linear regression based on the maximum likelihood estimation, linear support vector machines for regression, support vector machines for regression with radial basis kernel function, multiple linear regression, artificial neural networks with and without hidden layer and k-nearest neighbours methods using computational results. Initially, to determine the appropriate input variables to be used in the investigation, we assessed all combinations of meteorological variables. The results confirm that single meteorological variables alone are unable to predict rainfall accurately. The prediction performance of all selected models was improved by adding the input variables in most locations. To assess the influence of geographic regions on the performance of prediction models and to compare the prediction performance of models, we trained models with the best combination of input variables and predicted monthly and weekly rainfall over the test periods. The results of this analysis confirm that the prediction performance of all selected models varied considerably with geographic regions for both weekly and monthly rainfall predictions. It is found that models have the lowest prediction error in the desert climate zone and highest in subtropical and tropical zones. The results also demonstrate that the proposed algorithm is capable of finding the patterns and trends of the observations for monthly and weekly rainfall predictions in all geographic regions. In desert, tropical and subtropical climate zones, the proposed method outperform other methods in most locations for both monthly and weekly rainfall predictions. In temperate and grassland zones the prediction performance of the proposed model is better in some locations while in the remaining locations it is slightly lower than the other models.
- Description: Doctor of Philosophy
- Description: Accurate rainfall prediction is a challenging task because of the complex physical processes involved. This complexity is compounded in Australia as the climate can be highly variable. Accurate rainfall prediction is immensely benecial for making informed policy, planning and management decisions, and can assist with the most sustainable operation of water resource systems. Short-term prediction of rainfall is provided by meteorological services; however, the intermediate to long-term prediction of rainfall remains challenging and contains much uncertainty. Many prediction approaches have been proposed in the literature, including statistical and computational intelligence approaches. However, finding a method to model the complex physical process of rainfall, especially in Australia where the climate is highly variable, is still a major challenge. The aims of this study are to: (a) develop an optimization based clusterwise linear regression method, (b) develop new prediction methods based on clusterwise linear regression, (c) assess the influence of geographic regions on the performance of prediction models in predicting monthly and weekly rainfall in Australia, (d) determine the combined influence of meteorological variables on rainfall prediction in Australia, and (e) carry out a comparative analysis of new and existing prediction techniques using Australian rainfall data. In this study, rainfall data with five input meteorological variables from 24 geographically diverse weather stations in Australia, over the period January 1970 to December 2014, have been taken from the Scientific Information for Land Owners (SILO). We also consider the climate zones when selecting weather stations, because Australia experiences a variety of climates due to its size. The data was divided into training and testing periods for evaluation purposes. In this study, optimization based clusterwise linear regression is modified and new prediction methods are developed for rainfall prediction. The proposed method is applied to predict monthly and weekly rainfall. The prediction performance of the clusterwise linear regression method was evaluated by comparing observed and predicted rainfall values using the performance measures: root mean squared error, the mean absolute error, the mean absolute scaled error and the Nash-Sutclie coefficient of efficiency. The proposed method is also compared with the clusterwise linear regression based on the maximum likelihood estimation, linear support vector machines for regression, support vector machines for regression with radial basis kernel function, multiple linear regression, artificial neural networks with and without hidden layer and k-nearest neighbors methods using computational results. Initially, to determine the appropriate input variables to be used in the investigation, we assessed all combinations of meteorological variables. The results confirm that single meteorological variables alone are unable to predict rainfall accurately. The prediction performance of all selected models was improved by adding the input variables in most locations. To assess the influence of geographic regions on the performance of prediction models and to compare the prediction performance of models, we trained models with the best combination of input variables and predicted monthly and weekly rainfall over the test periods. The results of this analysis confirm that the prediction performance of all selected models varied considerably with geographic regions for both weekly and monthly rainfall predictions. It is found that models have the lowest prediction error in the desert climate zone and highest in subtropical and tropical zones. The results also demonstrate that the proposed algorithm is capable of finding the patterns and trends of the observations for monthly and weekly rainfall predictions in all geographic regions. In desert, tropical and subtropical climate zones, the proposed method outperform other methods in most locations for both monthly and weekly rainfall predictions. In temperate and grassland zones the prediction performance of the proposed model is better in some locations while in the remaining locations it is slightly lower than the other models.
A conceptual re-alignment of methodology underpinning tax effect accounting : An Australian exploration of the contemporary normalising effect
- Authors: Morton, Elizabeth
- Date: 2016
- Type: Text , Thesis , PhD
- Full Text:
- Description: This research examines the presence and effectiveness of the ‘normalising effect’, traditionally offered as the main justification for tax effect accounting’s (TEA) adoption. TEA can be seen as a technical facet of accounting practice, ‘normalising’ the timing differences between the accounting and taxation systems. That is, income tax is recognised according to when transactions are recognised for accounting purposes in order to ‘normalise’ reported profits, thereby reflecting an income statement focus. It has been contended that this will improve the usefulness of financial reports by ‘correcting’ misleading and ‘unreal’ fluctuations in income tax. Australia’s adoption of AIFRS in 2005 entailed a major conceptual re-alignment of the methodology underpinning TEA, moving away from the income statement focus in favour of a balance sheet focus. This implied a different normalisation emphasis. It is within this contemporary setting, based on a study of 90 companies over the two regulatory periods between 2002 and 2011 (AGAAP and AIFRS), that a quantitative measure of the presence and effectiveness of the normalising effect was undertaken, additionally considering the subsequent balance sheet impact. Effective normalisation was revealed during the AGAAP period, whilst only effective after the removal of loss makers during the AIFRS period. These findings suggest that the relaxation of recognition criteria under AIFRS may have had a meaningful impact on the effectiveness of the new standard. However, when normalisation was given a more narrow definition in light of prima facie tax, deferred taxes had a more substantial impact, particularly during the AIFRS period. Such findings are consistent with the notion thatTEA enables reported tax to be ‘as if’ it were a function of accounting, without a substantial build up on the balance sheet as a consequence. These findings have implications for evaluating the efficacy of TEA and comprehending the nature of contemporary financial statements.
- Description: Doctor of Philosophy
- Authors: Morton, Elizabeth
- Date: 2016
- Type: Text , Thesis , PhD
- Full Text:
- Description: This research examines the presence and effectiveness of the ‘normalising effect’, traditionally offered as the main justification for tax effect accounting’s (TEA) adoption. TEA can be seen as a technical facet of accounting practice, ‘normalising’ the timing differences between the accounting and taxation systems. That is, income tax is recognised according to when transactions are recognised for accounting purposes in order to ‘normalise’ reported profits, thereby reflecting an income statement focus. It has been contended that this will improve the usefulness of financial reports by ‘correcting’ misleading and ‘unreal’ fluctuations in income tax. Australia’s adoption of AIFRS in 2005 entailed a major conceptual re-alignment of the methodology underpinning TEA, moving away from the income statement focus in favour of a balance sheet focus. This implied a different normalisation emphasis. It is within this contemporary setting, based on a study of 90 companies over the two regulatory periods between 2002 and 2011 (AGAAP and AIFRS), that a quantitative measure of the presence and effectiveness of the normalising effect was undertaken, additionally considering the subsequent balance sheet impact. Effective normalisation was revealed during the AGAAP period, whilst only effective after the removal of loss makers during the AIFRS period. These findings suggest that the relaxation of recognition criteria under AIFRS may have had a meaningful impact on the effectiveness of the new standard. However, when normalisation was given a more narrow definition in light of prima facie tax, deferred taxes had a more substantial impact, particularly during the AIFRS period. Such findings are consistent with the notion thatTEA enables reported tax to be ‘as if’ it were a function of accounting, without a substantial build up on the balance sheet as a consequence. These findings have implications for evaluating the efficacy of TEA and comprehending the nature of contemporary financial statements.
- Description: Doctor of Philosophy
Assessing productive soil - landscapes in Victoria using digital soil mapping
- Authors: Robinson, Nathan
- Date: 2016
- Type: Text , Thesis , PhD
- Full Text:
- Description: Spatial soil information is used to support questions on agriculture and the environment from global to local scales. Historically, soil mapping has been used to inform and guide a multitude of land users with their decisions. Demand for specific spatial soil information is increasing in response from a wider range of users operating across agricultural and environmental domains. To satisfy these demands, users must be provided with practical and relevant spatial soil information. Novel approaches are required to deal with global deficiencies in available soil information. A major limitation to this is the plethora of incongruent legacy data with poor spatial and temporal coverage. This research study initially identifies the specific needs of users for spatial soil information with a focus on the requirements of biophysical modellers. Secondly, error sources that hamper Digital Soil Mapping (DSM) are identified, described and assessed using pH in practical and relevant examples. A final aim is to spatially predict soil properties (e.g. clay mineralogy) that underpin soil chemical behaviour. This is achieved by harmonising legacy data in combination with new spectroscopy techniques and a spatial inference approach. The spatial soil information needs of biophysical modellers in Victoria, Australia were found to be consistent with global needs for information including soil water characteristics, organic carbon and effective rooting depth. To accommodate stochastic and epistemic uncertainties in spatial soil information, uncertainty frameworks proved effective to deal with, and understand the limitations of legacy data in spatial inference models. Robust and reliable spectroscopic models for properties that are linked to functions and services delivered by soil were achieved and used in 3D spatial models. These findings will enable a tactical response through the delivery of pertinent spatial soil information that is contemporary, quality assured and sought by users. Learnings presented should enable producers of spatial soil information to be more comprehensive in their delivery of products that are easy to use, accessible and understood by a growing user community.
- Description: Doctor of Philosphy
- Authors: Robinson, Nathan
- Date: 2016
- Type: Text , Thesis , PhD
- Full Text:
- Description: Spatial soil information is used to support questions on agriculture and the environment from global to local scales. Historically, soil mapping has been used to inform and guide a multitude of land users with their decisions. Demand for specific spatial soil information is increasing in response from a wider range of users operating across agricultural and environmental domains. To satisfy these demands, users must be provided with practical and relevant spatial soil information. Novel approaches are required to deal with global deficiencies in available soil information. A major limitation to this is the plethora of incongruent legacy data with poor spatial and temporal coverage. This research study initially identifies the specific needs of users for spatial soil information with a focus on the requirements of biophysical modellers. Secondly, error sources that hamper Digital Soil Mapping (DSM) are identified, described and assessed using pH in practical and relevant examples. A final aim is to spatially predict soil properties (e.g. clay mineralogy) that underpin soil chemical behaviour. This is achieved by harmonising legacy data in combination with new spectroscopy techniques and a spatial inference approach. The spatial soil information needs of biophysical modellers in Victoria, Australia were found to be consistent with global needs for information including soil water characteristics, organic carbon and effective rooting depth. To accommodate stochastic and epistemic uncertainties in spatial soil information, uncertainty frameworks proved effective to deal with, and understand the limitations of legacy data in spatial inference models. Robust and reliable spectroscopic models for properties that are linked to functions and services delivered by soil were achieved and used in 3D spatial models. These findings will enable a tactical response through the delivery of pertinent spatial soil information that is contemporary, quality assured and sought by users. Learnings presented should enable producers of spatial soil information to be more comprehensive in their delivery of products that are easy to use, accessible and understood by a growing user community.
- Description: Doctor of Philosphy