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Access control on provenance
No full textEmpirical thesis.Bibliography: pages 185-201.1. Introduction -- 2. Literature review -- 3. PACLP : a Partition-Based Access Control Policy Language for Provenance -- 4. A fine-grained Policy Model for Provenance-based Access Control -- 5. Purpose-based Access Policy on Provenance and Data Algebra -- 6. Provenance-based Classification Policy based on Encrypted Search -- 7. Provenance-based Encryption Scheme for Fine-grained Access Control -- 8. Conclusion -- Appendices -- References.Though provenance has long played a major role in the context of art and archaeology (in terms of lineage or pedigree), more recently it has become more important for data in various sectors such as finance and medicine. It is not just about the origin or creator of data but also what sort of operations have been performed by whom and in what context, especially when it comes to security and privacy. As provenance research on security stays at its initial stage,some open problems and research challenges have been identified for provenance research, specifically in terms of security issues. Access control involving provenance is treated as a primary security issue, and is the main area to which we are trying to contribute. Integrity and non-repudiation should also be ensured for provenance.This thesis mainly focuses on preserving the security of provenance as well as utilising provenance as conditions to control proper access to data. The contributions of the thesis are illustrated as follows:We propose three frameworks of access control policies on provenance. The Partition-based Access Control Policy Language on Provenance is tailored based on our extended provenance model (OPM+). The fine-grained policies determine access for provenance, based on our defined provenance partitions instead of whole provenance graphs. Moreover, Algorithms for merging policy results and transferring provenance graphs according to policy results are provided as well. Following this, The Provenance-based Access Control policies employs provenance partitions as conditions to evaluate accessibility for data. Our proposed policies distinguish different types of attributes extracted from provenance, where the result of each policy is a value in the "four-valued" decisions set. Policy algebras for the "four-valued" decision set are tailored accordingly. Further, to provide a comprehensive scope for access control policies involving provenance, Purpose-based Access Policies on provenance are proposed. This defines allowed/prohibited access purposes for data based on attributes in provenance. A series of corresponding internal and external policy algebras is provided to merge purpose sets.We also provide two cryptographic schemes to implement access control policies involving provenance. One scheme implements Provenance-based file Classification Policies which sort files based on given provenance partitions (keywords) from their provenance. The scheme enables to search given provenance partitions in the ciphertext of provenance as well as check authentication of users. The other scheme is derived from attribute-based access control encryption schemes. It allows data owners to encrypt data based on Provenance-based Access Control policies.Mode of access: World wide web1 online resource (xxii, 201 pages) diagrams, table
Gerontological hygiene: the role of anti-aging somatechnologies in the abolition of old age
No full textTheoretical thesis.Bibliography: pages 329-350.Introduction -- Chapter One. The biopolitics of somatechnologies and diseased bodies -- Chapter Two. Gerontological hygiene : emergence and contemporary practice -- Chapter Three. Questions of the 'human' -- Chapter Four. Gerontological treatment protocols : an ethical inquiry -- Conclusion -- Reference list.The central concern of this thesis is to expose and critique the myriad ways in which old age has become pathologised as a disease-state. The pathologisation of old age, I argue, has been enabled and legitimised by a number of scientific and medical discourses and, most notably, through the inclusion of old age as a listing in the International Classification of Diseases index. Informed primarily by the Foucauldian concepts of biopolitics and governmentality, I aim to explore the problematic discursive and technological regimes that perpetuate what I name as 'gerontological hygiene.' As will be seen, I also deploy a neoliberal framework to complicate common understandings of age and our approaches to bodies deemed 'old'. It is my contention that old age - and aging more broadly - is currently under attempted abolition; that is, through governmental, institutional and medico-scientific frameworks, there is an attempt to abolish age and aging because it has been framed as a pathology that needs to be 'cured.' As such, this thesis is concerned with addressing the over-arching research question: 'do anti-aging somatechnologies play a role in the abolition of old age?' In the course of the thesis, I seek to examine the intricate nexus between ever-growing anti-aging discourses and practices.In the course of my thesis, I tease out the inter-relations between biopolitical governance and anti-aging somatechnologies in order to examine the critical space between biopolitics and ethics. In this way, my thesis identifies a gap in the field of biopolitical studies in its failure, largely, to address old age and, specifically, the biopolitical and related somatechnological moves to abolish it. Further, while several texts critique the ethical use of technologies in and on the disabled body, there is a further gap that fails to address ethical implications upon both the body of elderly individuals and related subjectivities. I stage a number of interventions in this field, as evidenced by the below chapter descriptions.Primarily deploying a Foucauldian lens in Chapter 1, I develop a framework of 'gerontological hygiene' to expose the manifold ways in which old age is currently undergoing both discursive and practical abolition. I proceed to elaborate on ongoing discursive practices designed to abolish old age in Chapter 2, where I examine medicalised somatechnologies such as telomere and genetic therapy, and institutionalised policy such as the World Health Organisation's Global strategy and action plan on ageing and health (2014). It is my contention that these strategies are oriented toward the abolition of old age, thus enacting a neo-eugenic regime of biopolitical hygiene. In Chapter 3, the thesis further examines the inter-connection between neoliberal self-surveillance and idealised notions of normative humanity through a critique of Heideggerian and Arendtian theories of what constitutes the human. Finally, Chapter 4 of this thesis undertakes an ethical examination of emerging anti-aging somatechnologies, drawing on Levinasian philosophy to critique anti-aging medical practice.Mode of access: World wide web1 online resource (350 pages
Integration of the ecosystem approach in legal and policy framework for the sustainable conservation of mangrove forest in Bangladesh: a case study of the Sundarbans ecosystem
No full textTheoretical thesis.Bibliography: pages 302-351.Chapter 1. Sustainable conservation of the Sundarbans ecosystem : an overview -- Chapter 2. Ecosystem approach : genesis, theoretical basis and relevance for Bangladesh -- Chapter 3. Ecosystem approach in the international legal framework -- Chapter 4. Ecosystem approach in legal and policy framework of Bangladesh -- Chapter 5. Institutional framework for implementation of ecosystem approach in the Sundarbans -- Chapter 6. Integration of ecosystem approach in legal and policy frameworks of Bangladesh for sustainable conservation of the Sundarbans : a way forward -- Bibliography --Appendices.Mangrove's role in maintenance of global ecological integrity and the provision of human wellbeing in coastal areas and beyond is well recognised. Increased human exploitation and climatic interventions make mangroves the world's most vulnerable tropical ecosystem. The Sundarbans, the mangrove forest of Bangladesh having economic, social, environmental and international significance, is gradually showing signs of substantial deterioration. Despite a century-old forest management plan and a web of policies and legislation, depletion of forest resources has continued unabated, illustrating gaps in the legal regimes and management approaches governing or applied to the Sundarbans. As law and policy helps to bring substantial changes in the behaviour of ecosystem-dependent communities or equip ecosystem managers with emerging concepts of natural resource management, the globally agreed conservation principles must be recognised in the legal framework as an overarching policy goal for making those principles enforceable on the ground. Therefore, it is crucial to re-examine the legal and policy frameworks of Bangladesh regulating the Sundarbans in light of the international legal framework to ensure sustainable conservation of the Sundarbans and maintenance of Bangladesh's ecological balance.In this context, this thesis focuses on promotion of a conservation-development-climate-resilient approach for the protection of the ecosystem, environment and dependents of the Sundarbans. In doing so, this thesis reviews the legal framework governing mangrove management to identify the gaps therein. It examines the relevance of the ecosystem approach, considering the local geo-ecological condition and socio-economic reality. This thesis argues for the application of the ecosystem approach and integration of its principles in the legal and policy frameworks for ensuring ecologically sustainable development in the Sundarbans. Subsequently, the thesis analyses the Sundarbans' biodiversity-environment-climate change policy, legal and institutional frameworks to evaluate the status of the ecosystem approach's principles. It then identifies areas that require modification to incorporate those principles into the policy and legal framework. Finally, it offers certain recommendations for law and policy responses to applying the principles of the ecosystem approach in achieving sustainable conservation of the Sundarbans.This thesis demonstrates the significance of integrating six dominant principles of the ecosystem approach in addressing the different challenges permeated within the Sundarbans for maintaining its ecological integrity. However, implementing these requires unambiguous conservation priorities, responsive policies, dynamic legislation and a supportive institutional framework. Thus, this thesis suggests setting clear conservation priorities, substantial policy and legislative reform, strengthening of institutional frameworks and allocation of an adequate budget to meaningfully align the ecosystem approach principles and integrate them into management of the Sundarbans. The development of a value-based marketing and trading system is found to be an effective vehicle in promoting environmental justice among the Sundarbans resource users. The suggested legal and policy recommendations for reform provide information for researchers and policymakers in reconsidering the legal frameworks regulating the Sundarbans for making the Sundarbans's conservation-development paradigm inclusive, equitable and adaptive.Mode of access: World wide web1 online resource (xxxi, 403 pages
The electrical properties of the Woodroffe Thrust: a resistive shear zone
No full textTheoretical thesis.Bibliography: pages i-viii.1. Introduction -- 2. Background -- 3. Methods -- 4. Results -- 5. Discussion -- 6. Conclusions.Shear zones are a geological feature of interest due to their unique electrochemical and structural properties. However, consensus on the causation of their conductivity anomalies at large is not unified. There are many factors to consider when understanding the electrical features of a given shear zone. Composition, including minerals and grain boundary films, as well as particle size and the presence of fluids are some key factors. Generally, shear zones are conductive in geophysical exploration and the above factors are sometimes used to explain conductivity features associated with certain shear zones. However, the cause of this conductivity is often poorly constrained. My work uses rock samples and geophysical data gathered at a surface expression of the Woodroffe Thrust, NT, Australia. Using micro X-ray fluorescence, I evaluate compositional (mineral) and structural properties (grainsize) of my survey area. The conductivities of samples from the thrust are examined in lab conditions using electrochemical impedance spectroscopy. I then compare these conductivity values with the field geophysical data (time domain electromagnetics and magnetotellurics). By constraining the data in this way, I can consider in detail the causation and expression of the electrical response. My conductivity results highlight a disparity between my field and lab results of over seven orders of magnitude whilst also hinting at an anisotropy of conductivity mechanisms. These results contribute to a larger narrative of conductivity, with lab/petrophysical analysis on one side and field/geophysical results on the other. My work highlights that there is no property of a shear zone that makes it inherently conductive and that understanding the electrochemical response of a shear zone requires detailed analysis.1 online resource (iii, 50, viii pages : illustrations, maps
Characterising asymmetric lenses using internal categories
No full textEmpirical thesis."Centre of Australian Category Theory (CoACT), Department of Computing" -- title page.Bibliography: pages 49-50.1. Introduction -- 2. Background -- 3. Internal characterisation of set-based lenses -- 4. Internal characterisation of c-lenses -- 5. Internal characterisation of d-lenses -- 6. Conclusion -- References.Asymmetric lenses were originally defined in Computer Science as a solution to the view update problem, and are mathematically well understood as a generalisation of split opfibrations. In this thesis, we utilise internal category theory to unify three kinds of asymmetric lens — set-based, c-lenses, and d-lenses — through the construction of an internal category of view updates produced using the well-known lens laws. We show that this category forms the head of a span of internal functors, which induces a commutative triangle with the Get of a lens. The composition of these commuting triangles is used to characterise the three categories Lens, Clens, and Dlens.Mode of access: World wide web1 online resource (x, 50 pages
The spillover effects of major Chinese macro-economic announcements on regional stock
No full textEmpirical thesis.Bibliography: pages 64-71.1. Introduction -- 2. Literature review -- 3. Hypothesis development -- 4. Data -- 5. Methodology -- 6. Empirical results -- 7. Summary and conclusion -- References -- Appendices.The advancement of the Chinese economy into the world’s second largest advocates a need to better understand how macro-economic events flow onto interconnected regional economies. This research aims to investigate the announcement spillover effects of Chinese economic indicators on major stock indices in the Asia–Pacific region from January 2011 to December 2017. Using intraday financial data, official Chinese macro-economic announcements and Bloomberg analyst market consensus data, this study examines the extent of interconnectivity between China and surrounding nations. More specifically, announcements are divided into five groups based on release time, and regional index futures markets include Japan, Australia, Korea, Hong Kong, Taiwan and Thailand. Empirical results reveal that the release of gross domestic product, industrial production, exports and imports cause corresponding movements in regional index futures markets. Due to China’s recent economic transition from manufacturing to the service industry, the economic significance of the manufacturing Purchasing Managers’ Index on regional stock markets is also decreasing.Mode of access: World wide web1 online resource (vii, 78 pages) graphs, table
Critical thinking in English language teaching in the Vietnamese context: perceptions and university students' competence
No full textEmpirical thesis.Bibliography: pages 58-65.Chapter 1. Introduction -- Chapter 2. Literature review -- Chapter 3. Methodology -- Chapter 4. Data analysis and findings -- Chapter 5. Discussion -- Chapter 6. Conclusion -- References -- Appendices.This study examines the importance and feasibility of critical thinking (CT) in English language teaching (ELT) in the Vietnamese tertiary context. CT, which has now become a worldwide phenomenon, is considered to be one of the essential skills that students must learn in order to succeed in their studies at university and in their life after university. However, there exists a mismatch between a growing tendency in Vietnamese universities, due to globalization, to build CT into the curriculum of different disciplines, even the discipline of English Linguistics and Literature, on the one hand, and limited, dated literature on CT in ELT on the other hand. This study investigates CT in ELT in the perceptions of teachers and students at a leading public university in Vietnam, and examines senior students’ competence in CT.Evidence was collected through two questionnaires, two CT tasks and interviews in a qualitative case study within an interpretive research paradigm. Findings revealed (1) that CT, which all the participants could formulate an idea of, was perceived to be especially important in ELT, appropriate for Vietnamese students, and congruent with the Vietnamese context of ELT; (2) that a majority of the participants adopted positive attitudes towards the specification of CT as a programme/course learning outcome; and (3) that senior students’ CT competence was evaluated to vary along a continuum, though mainly gathering around the average level.Mode of access: World wide web1 online resource (x, 136 pages) graphs, table
Contributions to mass incarceration: a study on the tough-on-crime policies of the Clinton Administration and their institutional effects
No full textTheoretical thesis.Bibliography: pages 56-66.Chapter One. Introduction -- Chapter Two. The politics of crime & punishment -- Chapter Three. Violent crime control & Law Enforcement Act of 1994 -- Chapter Four. Tough-on-crime : an American political imperative -- Chapter Five. Clinton & the activation of tough-on-crime ideas -- Chapter Six. Material outcomes -- Chapter Seven. Symbolic consequences -- Conclusion -- References.Over the past 50 years, the United States has produced an exceptionally punitive criminal justice system resulting in the world’s largest prison population. Attempts to explain its rapid emergence have amassed an extensive and interdisciplinary body of research. Generally speaking, there is presently no determined causal theory of “mass incarceration” phenomena. Nonetheless, institutional frameworks have provided greater insight into the epistemic underpinnings of crime and punishment. Social, historical and economic theories have shown that institutions engender meaning and context which can shape action and ideas and facilitate systematic change accordingly.Analysis of penal policy development from a political institutional perspective is somewhat lacking within such literature. As a result, it will be the framework of this paper. Discursive institutionalism operates under the principle that political institutions are built upon a dynamic force of structure and agency that enable power. Accordingly, ideas and discourse are privileged as explanatory tools because they represent the various contextual nuances of policy development in a holistic way.Utilizing the methodological toolkit of discursive institutionalism, we will undertake a case-study analysis of the discursive processes and outcomes of the Clinton administration approach to crime. Our specific analytical focus will be upon the executive-level politics engaged in during the policy-development stages preceding the passage of the largest, most costly anticrime bill in American history.The Violent Crime Control and Law Enforcement Act of 1994 represented the Democratic Party’s first “tough-on-crime” foray. It was also enacted at a time when crime was in decline. Yet examination of the Clinton administration’s pursuit of punitive criminal justice and mass incarceration outcomes is perceptibly incomplete if not in terms of academic rigour then at least focus. Our intention is to evaluate the material and symbolic consequences of these outcomes in terms of both structure and agency.Mode of access: World wide web1 online resource (iii, 66 pages
The shadow education market in Australia: a study of online tutoring intermediaries
No full textTheoretical thesis.Bibliography: pages 72-84.Chapter One. Introduction -- Chapter Two. Literature review -- Chapter Three. Methods and methodology -- Chapter Four. Intermediary structure -- Chapter Five. Results and discussion of interviews -- Chapter Six. Conclusion -- Reference list -- Appendices.This research examines the private tutoring market in NSW. While other researchers have conducted research on ‘learning centres’, this research focuses specifically on one-on-one ‘in home’ tutoring facilitated through online intermediaries. The methods encompass a content analysis of 65 websites that facilitate tutoring lessons, together with interviews with tutors who utilise these websites to find work. Within this thesis, the different intermediaries that exist within this market are classified and compared in relation to the functions that they perform. Research on online labour markets is used to try to explain how these intermediaries operate. This thesis also draws on classical economic sociology to explore the impact of different kinds of intermediation on tutors’ work and their relationships with their students. This shows the influence of intermediaries on the flexibility of the job of being a tutor and the way that tutors find students to tutor. I also demonstrate how tutors generate a trusting relationship between themselves and their students and show how intermediaries attempt to foster a similar relationship between their users.Mode of access: World wide web1 online resource (103 pages) table
Indigenous eco-cultural knowledge of freshwater turtles in South-East Arnhem Land, Australia
No full textTheoretical thesis.Bibliography: pages 49-55.1. Introduction -- 2. Methods -- 3. Results -- 4. Discussion -- 5. Conclusions -- References -- Appendix.Freshwater turtles play a significant role in Indigenous culture as food and totems. Following requests by Indigenous communities of the South East Arnhem Land Indigenous Protected Area (SEAL IPA), this project documented freshwater turtle knowledge of Traditional Knowledge Custodians (TKCs) to gain a better understanding of freshwater turtle species distribution, habitat preferences, potential threats and cultural values. Through participatory mapping workshops and semi-structured interviews, three turtle species were recorded in the IPA: Northern Long-neck Turtle (Chelodina oblonga), Short-neck Turtle (Emydura worrelli) and Stinky Turtle (Chelodina canni). Freshwater turtles are embedded in local Aboriginal culture which is expressed in this region mainly through stories and songlines. TKCs mentioned four main threats to freshwater turtles: climate change, natural predators, feral animals and habitat change. Climate change impact was primarily attributed to lower rainfall. Natural predators were dingo and birds of prey, while feral animal threats were mentioned as buffalo, pig and cattle. The eco-cultural and participatory approaches used in this project greatly improved knowledge of freshwater turtle distribution, cultural association and threats for which there was previously very little documented data in this remote part of northern Australia.Mode of access: World wide web1 online resource (iv, 56 pages) colour illustrationss, colour map