Knowing from where?

Exploring western philosophies which have shifted down through time but have also held firm on key features that dominate, separate and shatter at the core I realised this was not us as I tried to "develop the right orientation to ourselves and our place first" (Meyer2003 : 60) as an Arabana udyurla. Thus, despite there being some opportunity here and there within these philosophic positions I turned to the Ularaka -- the Arabana worldview -- to consider methodology and method drawing from our ancient knowledge. The sun shone brightly. I was able to 'See...hear...feel and smell (take it in)' -- think. My approach shifted from a marking out of an Indigenous space within or being an addendum to western philosophies to understanding and therefore doing from an embodiment and embodying within the ontologies and cultural knowledge of the Ularaka. From here while in dialogue with and being 'grown' or mentored by key Elders, I could powerfully experience, engage and interpret 'data' from an Indigenous knowledge position.

Contrasting genetic structuring between colonies of the world's smallest penguin, Eudyptula minor (Aves: Spheniscidae)

The Little Penguin, Eudyptula minor, is a seabird that nests in colonies throughout New Zealand and southern Australia. Individuals from different colonies in southeast Australia differ significantly in morphology and ecology, suggesting that some genetic structuring may exist among colonies. In contrast, the marking of individuals with flipper bands has revealed some, albeit infrequent, movement between colonies. To determine the extent of genetic structuring, we tested the null hypothesis of substantial gene flow within southeast Australia by examining patterns of genetic variation across seven colonies separated by up to 1,500 km. Phylogeographic structuring was absent for mitochondrial control region sequences (2–3 individuals per colony). Microsatellite allele frequencies at five loci and mitochondrial haplotype frequencies (50 individuals per colony) were also homogenous among the majority of colonies sampled, although two colonies at the western periphery of the sampling range were distinct from those to the east. The genetic homogeneity among the majority of colonies can be explained by low but consistent contemporary gene flow among them, or a recent founder event in Bass Strait following the last marine transgression. The genetic break towards the western end of the sampling distribution appears best explained by differences in sea surface temperature and, consequentially breeding phenology, the latter hindering genetically effective migration.

Detecting and tracing DDoS attacks by intelligent decision prototype

Over the last couple of months a large number of distributed denial of service (DDoS) attacks have occurred across the world, especially targeting those who provide Web services. IP traceback, a counter measure against DDoS, is the ability to trace IP packets back to the true source/s of the attack. In this paper, an IP traceback scheme using a machine learning technique called intelligent decision prototype (IDP), is proposed. IDP can be used on both probabilistic packet marking (PPM) and deterministic packet marking (DPM) traceback schemes to identify DDoS attacks. This will greatly reduce the packets that are marked and in effect make the system more efficient and effective at tracing the source of an attack compared with other methods. IDP can be applied to many security systems such as data mining, forensic analysis, intrusion detection systems (IDS) and DDoS defense systems.

Accession of lots : accession per artes magicas?

One of the challenges of being a property law teacher is marking the script of a student who has "spotted" accession for the exam, but answers a question dealing with restrictive conditions by writing shotgun-style everything he or she knows about accession. The same feeling is experienced when one reads the above decision. The only difference is the absence of students in this case.

Lived experience of gay men caring for others with HIV/AIDS : living, loving and dying in the era of HIV/AIDS

This thesis explored gay male carers’ experience of caring for their partner, brother or friend who had HIV/AIDS. Through using phenomenological methodology (van Manen, 1990), the day-to-day caring experiences were uncovered. The data gathered were then analysed through a nursing ‘lens’, with the concept of stigma as an anchoring point. The dual stigmas of homophobia and AIDS phobia impacted on the daily lives of these men as they cared for their loved one. The research identified six themes. These were: 1) the relationship; 2) coping with HIV and AIDS; 3) the corporal impact of HIV/AIDS; 4) experiences of carers including the absence of others; 5) living daily with the virus: Demands of people living with HIV/AIDS (PLWHA); and 6) saying goodbye, but wanting to keep the memory alive. The caring these men undertook, for which they were frequently unprepared, was intensive and complex, but because of their commitment and love they battled on. Because of a sense of shame associated with AIDS phobia on the part of the PLWHA, the carer often had to undertake this care in isolation, without support from family, friends or home health care agencies. The carers struggled with not only the demands of day-to-day care, but also with non-acceptance from family, both of the nature of the relationship with their partner and of their homosexuality. Family members were forced, often with great difficulty, to acknowledge the close commitment the men had to each other. Recognition that one had a terminal disease, HIV/AIDS was also required. The fear of potential transmission was high among carers, friends and family members. Notably, there was an absence of blame on the part of the carer towards his partner for contracting HIV/AIDS. The physical decline and marking of the body further stigmatised the PLWHA, which added to carers’ burdens. They endeavoured to minimise the physical decline in their partner, so he could continue to pass as healthy, and attempted to make the day-to-day living as normal as possible. The methods of combating weight loss and opportunistic infections meant frequent medical appointments, complex intensive medical procedures and help with personal care, which was undertaken at home largely without support from health care staff. Carers frequently struggled also with their partner’s denial of being ill. One strategy all carers used was to escape with their partners from their everyday life in Melbourne and attempt metaphorically to leave the HIV/AIDS behind; this was a time when they could rekindle their life together as it was before HIV/AIDS came into their lives. Some carers chose to holiday without their partner, to give themselves a break from the day-to-day caring, while others planned and took holidays with their partner. The decline of the health in the PLWHA meant that family members had to recognise and accept both the nature of the relationship and the presence of the disease. This recognition and acceptance often came only when the partner was very ill, even at the point of dying. Carers and their partners discussed the potential use of euthanasia, as a means of ending the final phase of life with some dignity. One carer and his partner used euthanasia, despite its illegal status. The main concern for all carers was providing comfort and a reduction in the pain associated with HIV/AIDS for the partner. The widespread grief associated with HIV/AIDS was evident amongst these carers. All had known other gay men who had died, some carers own partner had died, or was about to die. There was an overwhelming sense of grief, which at times was repressed as a means of coping day-to-day. All carers felt it was important and necessary to remember those lost to HIV/AIDS through the various public memorials, as they did not want their partner to be just another faceless person lost to this disease. This phenomenological study of carers’ experience highlights the need for health care workers to be aware of the differing strategies that gay men use to cope with HIV/AIDS. While it may seem that the carers are coping with care of their partner, the outer façade is not always an accurate portrayal of the true situation. Health care workers should enquire as to the assistance these carers need from health care services in order to continue to care for their loved one. Such assistance can be the simple recognition of the partner and acceptance of them as part of the PLWHA’s network; this inclusion and acceptance is half the battle.

Late Palaeozoic sequence stratigraphy and brachiopod faunas of the Tarim Basin, Northwest China

This thesis deals with the stratigraphy and brachiopod systematic palaeontology of the latest Devonian (Famennian) to Early Permian (Kungurian) sedimentary sequences of the Tarim Basin, NW China. Brachiopod faunas of latest Devonian and Carboniferous age have been published or currently in press in the course of the Ph.D candidature and are herein appendixed, while the Early Permian brachiopod faunas are systematically described in this thesis. The described Early Permian brachiopod faunas include 127 species, of which 29 are new and 12 indeterminate, and six new genera (subgenera) are proposed; Tarimella, Bmntonella, Marginifera (Arenaria), Marginifera (Nesiotia), Baliqliqia and Ustritskia. A new integrated brachiopod biostratigraphical zonation scheme is proposed, for the first time, for the latest Devonian-Early Permian sequences of the entire Tarim Basin on the basis of this study as well as previously published information (including the Candidate's own published papers). The scheme consists of twenty three brachiopod acm biozones, most of which replace previously proposed assemblage or assemblage zones. The age and distribution of these brachiopod zones within the Tarim Basin and their relationships with other important fossil groups are discussed. In terms of regional correlations and biostratigraphical affinities, the Late Devonian to Early Carboniferous brachiopod faunas of the Tarim Basin are closest to those from South China, while the Late Carboniferous faunas demonstrate strong similarities to coeval faunas from the Urals, central Asia, North China and South China. During the Asselian-Sakmarian, strong faunal links between the Tarim Basin and those of the Urals persisted, while at the same time links with central Asia, North China and South China weakened. On the other hand, during the Artinskian-Kungurian times, affinities of the Tarim faunas with the Urals/Russian Platform rapidly reduced, when those with peri-Gondwana (South Thailand, northern Tibet) and South China increased. Thirty lithofacies (or microfacies) types of four facies associations are recognised for the Late Devonian to early Permian sediments. Based on detailed lithostratigraphy, biostratigraphy and facies analysis, 23 third-order sequences belonging to four supcrsequences are identified for the Late Devonian to Early Permian successions, from which sea-level fluctuation curves are reconstructed. The sequence stratigraphical analysis reveals that four major regional regressions, each marking a distinct supersequence boundary, can be recognised; they correspond to the end-Serpukhovian, end-Moscovian, late Artinskian and end-Kungurian times, respectively. The development of these sequences is considered to have been formed and regulated by the interplay of both eustasy and tectonism. Using the system tract of a sequence as the mapping time unit, a succession of 47 palaeogeographical maps have been reconstructed through the Late Devonian to Early Permian. These maps reveal that the Tarim Basin was first immersed by southwest-directed (Recent geographical orientation) transgression in the late Famennian after the Caledonian Orogeny. Since then, the basin had maintained its geometry as a large, southwest-mouthed embayment until the late Moscovian when most areas were the uplifted above sea-level. The basin was flooded again in late Asselian-Artinskian times when a new transgression came from a large epicontinental sea lying to its northwest. Thereafter, marine deposition was restricted to local areas (southwestern and northwestern margins until the late Kungurian, while deposition of continental deposits prevailed and continued through the Middle and late Permian into the Triassic.

Issues arising from the implementation of a comprehensive assessment approach in a large, multi-modal Bachelor of Commerce unit

Recent literature in higher education argues university assessment has been too narrow and hasn’t adequately reflected the quality, breadth and depth of students’ learning. Research shows students often prioritise and learn what they need to know for formal, graded assessment and disregard other academic content seen as less relevant to those requirements. The predominance of essays and examinations has therefore tended to constrain learning. The case for a more comprehensive approach has been clearly articulated. So what happens when staff take up the unique challenge of designing fair and uniform assessment for a large, core, multi-modal, multi-campus unit offered nationally and internationally?

When developing an undergraduate Bachelor of Commerce unit at Deakin University, staff considered the most appropriate ways to assess a range of conceptual understandings and communication skills. This resulted in the mapping and adoption of a comprehensive approach incorporating teacher, peer, and self-assessment aspects, individual and group work, oral and written presentations, and the use of portfolios and journals. Particular practices were adopted to control workloads, ensure fairness in marking, and overcome some problems generally associated with group work. When implementing the approach, practical issues arose that demanded adjustments. This paper details the approach taken, outlines research activities, and discusses the practical implications of issues that arose.

Advice on assessing large classes

After a decade of rapid expansion in Australian higher education, student numbers have grown considerably in many courses and subjects, especially at the undergraduate level.
Larger class sizes pose significant teaching challenges, not least in the assessment of student learning. Perhaps most troubling, large classes may limit the amount of feedback provided to students.
In response to the pressures and challenges of assessing larger groups of students, academic staff are responding through:
• greater attention to the communication of clear assessment criteria to students;
• the development and use of marking guides to be used by teaching and assessing teams;
• the increasing use of various forms of exemplars to guide student efforts — as well as to guide marking and grading — including the modelling of discipline-based thinking, writing and performance; and
• the continuous refinement and dissemination of assessment policy and practice in relation to large student groups.
The issue of workload is central in any decisions about assessment of large classes for it is a serious one for students and staff alike. Staff teaching large student groups invariably undertake an informal, qualitative weighing-up of the efficiency of assessment tasks vis-à-vis their educational effectiveness.
There is little doubt that establishing an effective assessment program — developing criteria, guides, exemplars and models; discussing and refining them and communicating them to students and other staff — will have an initial negative impact on workload for staff with coordinating responsibilities.
However, this preparatory work is likely to lead to three gains. The first is a reduction in the time required for marking due to a higher quality of student submission. The second is a resolution of some of the potential issues likely when many staff are involved in marking and grading, through a streamlining of marking and grading practices. Finally, the availability of clear, transparent criteria and examples of work will contribute positively to the overall quality of teaching and learning.

Advice on online assessment

A good deal of investigation and development is underway in Australian universities into the possibilities for effective and efficient on-line and computer-based assessment. The current commercial ‘virtual learning environments’, which integrate various curriculum elements at subject level into a single software portal, usually offer various built-in options for student assessment. As well, many on-line assessment initiatives are being locally developed to suit specific curriculum needs.

There are many reasons why on-line assessment is being adopted by Australian universities. Many academics are seeking to diversify assessment tasks, broaden the range of skills assessed and provide students with more timely and informative feedback on their progress. Others are wishing to meet student expectations for more flexible delivery and to generate efficiencies in assessment that can ease academic staff workloads. All staff involved in such initiatives are discovering they face a large number of technical and educational decisions.

The move to on-line and computer based assessment is a natural outcome of the increasing use of information and communication technologies to enhance learning. As more students seek flexibility in their courses, it seems inevitable there will be growing expectations for flexible assessment as well.

At the same time, in a climate of increasing academic workloads, the adoption of on-line assessment may help to manage large volumes of marking and assessment-related administration efficiently. The automation of routine on-line tasks, in particular, may have the potential in the long-term to provide time/cost-efficient student assessment, though the present evidence suggests that some on-line assessment, at least in the early stages, can add significantly both to staff workload and to overall expenses.

The effect of the introduction of teaching interventions and assessment strategies in first year management units

This Scholarship of Teaching research aimed to ultimately become a report and a series of recommendations on the teaching of first year Management units in universities. Many of the Australian universities benchmark themselves against the leaders in the Course Experience Questionnaires (CEQ) (Ramsden 1991) of graduating students in Australia. Most Australian universities have their own student satisfaction evaluation method. In this study the subject university uses the Student Evaluation of Teachers and Units (SETU) as their internal method of measuring the effectiveness of teaching on units on a cohort by cohort basis. This project, using one of the largest units in a Business and Law Faculty had specific measurable objectives; the results of the unit teams' interventions demonstrate that it is possible to increase student satisfaction during their transition year by as much as 11.5%. The ten recommendations ranging from changes to unit objectives, assessment methods and updated methods of marking, communication and student support, if acted upon, should have ongoing benefits for teaching and learning of first year management units.

The transnational corporation and new corporate citizenship theory : a critical analysis

A recent conceptualisation of corporate citizenship by Matten and Crane (2005) shifts focus onto the corporation's role in providing individuals with the rights they are entitled to as citizens. This expanded corporate role is depicted as filling an institutional vacuum resulting from the withdrawal of the state. Marking an innovation to the corporate citizenship literature, we devise a three-part analytical framework from political institutionalism to question the concept's ideological and empirical groundings. Incorporating a constrained game theory perspective, we use an example of the provision of Western corporate services by low-labour-cost nation-states to argue that the concept as strategy would in some circumstances exacerbate the implications of globalisation on individual citizenship rights. The analytical framework has application for research directed toward proposals to extend the reach of corporations in traditional public services and, more generally, for studies of corporate responsibilities. Future research on corporate citizenship would be strengthened in recognising, as we do, institutional incentives, constraints, decision-making modes and resources as used by the transnational corporation.

Traceback of DDoS attacks using entropy variations

Distributed Denial-of-Service (DDoS) attacks are a critical threat to the Internet. However, the memoryless feature of the Internet routing mechanisms makes it extremely hard to trace back to the source of these attacks. As a result, there is no effective and efficient method to deal with this issue so far. In this paper, we propose a novel traceback method for DDoS attacks that is based on entropy variations between normal and DDoS attack traffic, which is fundamentally different from commonly used packet marking techniques. In comparison to the existing DDoS traceback methods, the proposed strategy possesses a number of advantagesit is memory nonintensive, efficiently scalable, robust against packet pollution, and independent of attack traffic patterns. The results of extensive experimental and simulation studies are presented to demonstrate the effectiveness and efficiency of the proposed method. Our experiments show that accurate traceback is possible within 20 seconds (approximately) in a large-scale attack network with thousands of zombies.

The relationship between emergence of the shortest path and information value using ant-like agents

Ant-like agents forage between two points. These agents' probabilistic movements are based on the use of two pheromones; one marking trails towards the goal and another marking trails back to the starting point. Path selection decisions are influenced by the relative levels of attractive and repulsive pheromone in each agent's local environment. Our work in [5] evaluates three pheromone perception strategies, investigating path formation speed, quality, directionality, robustness and adaptability under different parameter settings(degree of randomness, pheromone evaporation rate and pheromone diffusion rate). We re-evaluate two of these strategies in terms of the amount of information they provide using Shannon's formulation [3, 4, 8, 9, 12, 14, 15, 16, 17]. We determine information as the difference between uncertainty before and after path selection decisions. Our focus in this paper is on investigating relationships between the emergence of the shortest path and the amount of stigmergic information that exists in the form of pheromone. Agents are deployed centrally and emergence measures are determined using the worst, reference and best cases observed in [5]. Additionally, the amount of local and global information that is available to agents in each movement step is evaluated. Furthermore, Pearson's correlation coefficients between measures of emergence and the amount of information are calculated. The significance of these correlation coefficients is tested using a 2 tailed test at 1% level of significance. Consequently the relationship between the amount of information and emergent behaviour is established. Significant relationships between information and the emergence of the shortest path exist when strong emergent behaviour is present.

More than mere numbers: the impact of lethal control on the social stability of a top-order predator

Population control of socially complex species may have profound ecological implications that remain largely invisible if only their abundance is considered. Here we discuss the effects of control on a socially complex top-order predator, the dingo (Canis lupus dingo). Since European occupation of Australia, dingoes have been controlled over much of the continent. Our aim was to investigate the effects of control on their abundance and social stability. We hypothesized that dingo abundance and social stability are not linearly related, and proposed a theoretical model in which dingo populations may fluctuate between three main states: (A) below carrying capacity and socially fractured, (B) above carrying capacity and socially fractured, or (C) at carrying capacity and socially stable. We predicted that lethal control would drive dingoes into the unstable states A or B, and that relaxation of control would allow recovery towards C. We tested our predictions by surveying relative abundance (track density) and indicators of social stability (scent-marking and howling) at seven sites in the arid zone subject to differing degrees of control. We also monitored changes in dingo abundance and social stability following relaxation and intensification of control. Sites where dingoes had been controlled within the previous two years were characterized by low scent-marking activity, but abundance was similar at sites with and without control. Signs of social stability steadily increased the longer an area was allowed to recover from control, but change in abundance did not follow a consistent path. Comparison of abundance and stability among all sites and years demonstrated that control severely fractures social groups, but that the effect of control on abundance was neither consistent nor predictable. Management decisions involving large social predators must therefore consider social stability to ensure their conservation and ecological functioning.

Characterization of mucus-associated proteins from abalone (Haliotis) – candidates for chemical signaling

Living in groups is a widespread phenomenon in the animal kingdom. For free-spawning aquatic animals, such as the abalone (Haliotis), being in the close proximity to potential mating partners enhances reproductive success. In this study, we investigated whether chemical cues could be present in abalone mucus that enable species-specific aggregation. A comparative MS analysis of mucus obtained from trailing or fixed stationary Haliotis asinina, and from seawater surrounding aggregations, indicated that water-soluble biomolecules are present and that these can stimulate sensory activity in conspecifics. Purified extracts of trail mucus contain at least three small proteins [termed H. asinina mucus-associated proteins (Has-MAPs)-1–3], which readily diffuse into the surrounding seawater and evoke a robust cephalic tentacle response in conspecifics. Mature Has-MAP-1 is approximately 9.9 kDa in size, and has a glycine-rich N-terminal region. Has-MAP-2 is approximately 6.2 kDa in size, and has similarities to schistosomin, a protein that is known to play a role in mollusc reproduction. The mature Has-MAP-3 is approximately 12.5 kDa in size, and could only be identified within trail mucus of animals outside of the reproductive season. All three Has-MAP genes are expressed at high levels within secretory cells of the juvenile abalone posterior pedal gland, consistent with a role in scent marking. We infer from these results that abalone mucus-associated proteins are candidate chemical cues that could provide informational cues to conspecifics living in close proximity and, given their apparent stability and hydrophilicity, animals further afield.