Hydrology or floristics? Mapping and classification of wetlands in Victoria, Australia, and implications for conservation planning

A national approach to the conservation of biodiversity in Australia’s freshwater ecosystems is a high priority. This requires a consistent and comprehensive system for the classification, inventory, and assessment of wetland ecosystems. This paper, using the State of Victoria as a case study, compares two classification systems that are commonly utilized to delineate and map wetlands—one based on hydrology (Victorian Wetland Database [VWD]) and one based on indigenous vegetation types and other natural features (Ecological Vegetation Classes [EVC]). We evaluated the extent of EVC mapping of wetlands relative to the VWD classification system using a number of datasets within a geographical information system. There were significant differences in the coverage of extant EVCs across bioregions, different-sized wetlands, and VWD wetland types. Resultant depletion levels were markedly different when examined using the two systems, with depletion levels, and therefore perceived conservation status, of EVCs being significantly higher. Although there is little doubt that many wetland ecosystems in Victoria are in fact threatened, the extent of this threat cannot accurately be determined by relying on the EVC mapping as it currently stands. The study highlighted the significant impact wetland classification methods have in determining the conservation status of freshwater ecosystems.

Mapping the hot deformation microstructure of Ni-30Fe alloy

The evolution of structure during the hot working of an austenitic Ni-30%Fe alloy is studied using EBSD analysis of samples tested in torsion. A microstructural map in temperature-strain space that plots grain size, cell size, fracture and dynamic recrystallization is presented.

Mapping Attribution Metadata to the Open Provenance Model

A description of a data item's provenance can be provided in dierent forms, and which form is best depends on the intended use of that description. Because of this, dierent communities have made quite distinct underlying assumptions in their models for electronically representing provenance. Approaches deriving from the library and archiving communities emphasise agreed vocabulary by which resources can be described and, in particular, assert their attribution (who created the resource, who modied it, where it was stored etc.) The primary purpose here is to provide intuitive metadata by which users can search for and index resources. In comparison, models for representing the results of scientific workflows have been developed with the assumption that each event or piece of intermediary data in a process' execution can and should be documented, to give a full account of the experiment undertaken. These occurrences are connected together by stating where one derived from, triggered, or otherwise caused another, and so form a causal graph. Mapping between the two approaches would be benecial in integrating systems and exploiting the strengths of each. In this paper, we specify such a mapping between Dublin Core and the Open Provenance Model. We further explain the technical issues to overcome and the rationale behind the approach, to allow the same method to apply in mapping similar schemes.

Experimental study of ostensibly shamanic journeying imagery in naďve participants II: phenomenological mapping and modified affect bridge

This study develops the methodological framework advanced in Rock, Baynes, and Casey's (2005) experimental study of ostensibly shamanic journeying imagery in naïve participants. Specifically, the present study experimentally investigates the impact of the word landscape, featured in Harner's (1990) shamanic journeying to the Lower World instructions, on the number of landscape-related images reported; examines the origins of ostensibly shamanic journeying images; and maps the phenomenological state effects of shamanic journeying to the Lower World. Sixtyeight naïve participants were randomly assigned to one of three conditions: either the original or a revised version of Harner's (1990) instructions coupled with monotonous percussion drumming at 8 beats-per-second for 15 minutes, or sitting quietly with eyes open for 15 minutes. Each participant's subjective experience was retrospectively assessed using the Phenomenology of Consciousness Inventory (PCI) (Pekala 1991) and a mental imagery checklist. Subsequently, participants were administered the Modified Affect Bridge for the purpose of exploring the origins of mental imagery experienced during the experimental conditions. The results indicated that there was a statistically significant difference between conditions with regard to the number of ostensibly shamanic journeying images reported, but not between treatment conditions with regard to the number of landscaperelated images reported. There were no significant relationships between condition and mental imagery derived from autobiographical memories. There were statistically significant differences between conditions with regard to the PCI dimensions of fear, altered state of awareness, and arousal.

Mapping pedagogy to technology - a simple model

As academics we are often encouraged to “go online” by our institution, by either moving or supplementing our teaching in an online environment. We have several options. We could simply attempt to replicate our face-to-face teaching, in effect changing nothing; we can enhance our face-to-face teaching with the available technology; or we can transform our face-to-face teaching by the available technology. The approach we choose will be determined by several factors, one of which will be our existing knowledge of the technological environment we are using. In this paper I propose a simple framework which provides novice eTeachers in particular with a simple mapping from classroom activity to technological functionality, reducing the need to have extensive technological literacy of the learning environment when designing online activities initially.

Optimization of MLP parameters on mineral potential mapping tasks

Mineral potential mapping is the process of combining a set of input maps, each representing a distinct geo-scientific variable, to produce a single map which ranks areas according to their potential to host deposits of a particular type. The maps are combined using a mapping function which must be either provided by an expert (knowledge-driven approach), or induced from sample data (data-driven approach). Current data-driven approaches using multilayer perceptrons (MLPs) to represent the mapping function have several inherent problems: they rely heavily on subjective judgment in selecting training data and are highly sensitive to this selection; they do not utilize the contextual information provided by unlabeled data; and, there is no objective interpretation of the values output by the MLP. This paper presents a novel approach which overcomes these three problems.

Mapping the Australian archaic: reflections on black medea

Wesley Enoch’s Black Medea is explicit about what is, and what is not, its project: the chorus implores the audience not to read the narrative of its infanticidal heroine as one that demonises black women. Instead, the play affirms that its narrative can be understood differently and in a way that has a wider social significance. Taking my cue from the claim that the story is somehow ‘about everyone,’ I would like to begin unravelling the play’s relevance to contemporary contentions of Australian and indeed ‘Unaustralian’ subjectivity, particularly in relation to the discourses that seek to construct ‘Australian’ identity through an appeal to antiquity and what I describe as ‘the archaic.’ It seems to me that Black Medea presents an opportunity for thinking about the ways in which the discourses of aboriginal and classical antiquity operate to inform contemporary, contesting definitions of Australian identity. Regardless of whether these discourses of antiquity are claimed as ‘Australian’ or abjected as Other or ‘Unaustralian’ – and they have been used in both ways – they remain, I argue, formative to current conceptions of Australian identity and are positioned in the economy of discourses that comprise that arena. As will be seen, the mixed reception or ambivalence with which these complementary discourses of antiquity are treated in Australian culture gives Black Medea the potential to be situated among them in subversive and questioning ways, and in ways that may highlight the reasons for their ambivalent status.

Mapping cultural dimensions in Australian sporting organisations

No research focusing on sport has yet provided a method of charting cultureʼs potential dimensions. The aim of this study was to redress this gap by identifying a set of dimensions that could describe the cultures of Australian sporting organisations. The population for this study included Australian National Sport Organisations (NSOs), State Sport Organisations (SSOs) and clubs participating in national league competitions. Eight sport organisations formed the sample. Data were collected via 24 in-depth interviews. This study revealed 12 dimensions and 68 sub-dimensions of culture, which may be used to begin the process of mapping sport cultures. These results reveal some unique sport dimensions with no single existing dimensional model that captures the collective elements revealed in this study. The unique dimensions revealed in this study include “Rituals”, “Symbols”, “Size”, “History and tradition”, with support for these dimensions found within the sub-dimensional codes. This suggests that the dimensions recorded here might provide a useful launching pad for future studies on sport culture.

Marine benthic habitat mapping using multibeam data, georeferenced video and image classification techniques in Victoria, Australia

This paper contributes to a better understanding of geophysical characteristics and benthic communities in the Hopkins site in Victoria, Australia. An automated decision tree classification system was used to classify substrata and dominant biota communities. Geophysical sampling and underwater video data collected in this study reveals a complex bathymetry and biological structure which complements the limited information of benthic marine ecosystems in coastal waters of Victoria. The technique of combining derivative products from the backscatter and the bathymetry datasets was found to improve separability for broad biota and substrata categories over the use of either of these datasets alone.

Hippocampal deformation mapping in MRI-negative PET-positive temporal lobe epilepsy

Objectives: To compare hippocampal surface structure, using large deformation high dimensional mapping (HDM-LD), in subjects with temporal lobe epilepsy (TLE) with (HS+ve) and without (HS−ve) hippocampal sclerosis.

Methods: The study included 30 HS−ve subjects matched with 30 HS+ve subjects from the previously reported epilepsy patient cohort. To control for normal right–left asymmetries of hippocampal surface structure, subjects were regrouped based on laterality of onset of epileptic seizures and presence of HS. Gender ratio, age, duration of epilepsy and seizure frequency were calculated for each of the four groups. Final HDM-LD surface maps of the right and left TLE groups were compared to define differences in subregional hippocampal involvement within the groups.

Results: There were no significant differences in comparisons of the left TLE (left HS−ve compared with HS+ve) or right TLE (right HS−ve compared with HS+ve) groups with respect to age, duration of epilepsy or seizure severity scores. HDM-LD maps showed accentuated surface changes over the lateral hippocampal surface, in the region of the Sommer sector, in the hippocampi affected by HS. However, HS−ve hippocampi showed maximal surface changes in a different pattern, and did not involve the region of Sommer sector.

Conclusion: We conclude that differences in segmental volume loss between the HS−ve and HS+ve groups are suggestive that the underlying pathophysiology of hippocampal changes in the two groups is different, and not related to chronic seizure duration or severity.

Mapping postgraduate nurse education in Australia 2001-2002

Workforce planning at a national level within nursing and midwifery has been largely fragmented and uncoordinated with health-care organisations, state health authorities, peak nursing organisations and the tertiary sector often engaging in independent decision making and planning. In order to gain an increased understanding of the complexity of contemporary nurse education and to quantify the number of graduates of nursing education courses into categories that are meaningful for workforce planning, the federal Department of Education, Science and Training commissioned a national study in 2002. The aim of this study was to map and quantify current and projected numbers of Australian domestic nursing postgraduate students within their respective specialisation according to each State/Territory. All Australian universities offering postgraduate courses in nursing were electronically surveyed (n=30). Two non-university providers of postgraduate nursing education were also asked to participate, but only one responded. Data were gathered on the number of domestic postgraduate nursing students enrolled in 2002, the number of course completions in 2001 and projected completions for 2002. Of the 13 broad band specialty categories developed for the study, the specialties of Midwifery and High Dependency were dominant in both student enrolments and course completions, including projected completions. The range of specialties that were offered varied by State/Territory, as did the number and percentage of students enrolled, completing and projected to complete each specialty program. Generic courses (without listed specialisations) continue to complicate the process of attempting to tease out and quantify accurately the number of enrolled and completing postgraduate students according to area of specialty practice.

Mapping of Diepoxybutane Damage in the Cytochrome b Domain of Mitochondrial DNA and the β-globin Domain of Nuclear Chicken DNA Using Quantitative PCR

Diepoxybutane (DEB), a known industrial carcinogen, reacts with DNA primarily at the N7 position of deoxyguanosine residues and creates interstrand cross-links at the sequence 5'-GNC. Since N7-N7 cross-links cause DNA to fragment upon heating, quantative polymerase chain reaction (QPCR) is being used in this experiment to measure the amount of DEB damage (lesion frequency) with three different targets-mitochondrial (unpackaged), open chromatin region, and closed chromatin region. Initial measurements of DEB damage within these three targets were not consistent because the template DNA was not the limiting reagent in the PCR. Follow-up PCR trials using a limiting amount of DNA are still in progress although initial experimentation looks promising. Sequencing of these three targets to confirm the primer targets has only been successfully performed for the closed chromatin target and does not match the sequence from NIH used to design that primer pair. Further sequencing trials need to be conducted on all three targets to assure that a mitochondrial, open chromatin, and closed chromatin region are actually being amplified in this experimental series.