Critical reflections on professional education for the environment

Evidence exists to suggest that in Australia many environmental issues remain unresolved even though the community has apparently become more environmentally aware. Although universities have undertaken responsibility to educate future environmental professionals to address this concern, there are numerous tensions underpinning professional environmental education. This folio explores my perceptions of these tensions and their effect on my professional practice as an academic. I refer to this as the relationships among theories and practices experienced in my work. Four perspectives are taken in this research as I appraise professional environmental education. This Dissertation (Vol. 1) focuses on views informing my professional environmental education, inclusive of my own reflexivity. From interviews with students, academics, professionals and environmentalists, and other sources of information, I consider various tensions arising from what I regard as dehumanising social and political forces. The conventional elite and authoritative roles for universities and professionals dominate most participants' understanding of professional activities. Professional practices often endorse these conventions. Juxtaposed to this authoritative view of professional education, and prescribing a different interpretation for professional practice, is my theoretical position informed by criticality and a need to challenge the status quo. I suggest that Leopold's The Land Ethic is an exemplar of criticality and a suitable basis for examining professional environmental education. The Land Ethic is used as a foundation to my thesis because it encapsulates suitable arguments to examine ideologies supportive of my understanding of professional environmental education. My thesis investigates the nature of participants' (including my own) understanding of their land ethic or land ethics suggesting that interpretations of 'place' provide an emotional and ethical appreciation of the land. I suggest that 'place', as a culturally derived construct, is central to the concept of a land ethic or land ethics, and a characteristic of an environmental ethic or ethics. To incorporate these different perspectives into professional environmental education perhaps land could be viewed, not just as a 'client' as in Schön's (1983) reflective contract, but expanded so that professionals form ethical partnerships with the land, which implies a greater equity between roles and responsibilities. This perspective challenges elite interpretations of the roles for environmental professionals by asking them to be advocates for their land, and to work with the land. Searching for my own land ethic or land ethics has promoted a discourse that encompasses a language of possibility and opportunity. This language of possibility and opportunity stands in contrast to the constraining language of reproduction that has promoted stasis. My reflexivity, a holistic and ecological view that in this thesis is an expression of my searching for a land ethic or land ethics, has encouraged me to develop critical and ethical questions to challenge my professional environmental education practice. As such the process of theorising about my theory and practice has been personally transformative as it encourages my development as a 'critical person'. Elective 1 (Vol. 2 ) reviews public information promoting a selected range of Australian environmental courses. Analysis demonstrates environmental courses are mainly technocratic, promoting technical-scientific and vocational perspectives. This orientation, I consider, is aligned to an emerging corporate agenda as universities attempt to be more accountable to the government within a competitive market dominated by economic interests. Elective 2 (Vol. 2 ) considers the providers of professional environmental education where I explore a diversity of tensions undermining current academic life found in many Australian universities. I suggest that corporatisation and vocationalisation dominate university culture to such an extent that any examination of professional environmental education is prejudiced. Professional environmental education appears to be biased toward maintaining the status quo. My conclusion is that professional environmental education does not promote graduates as 'critical persons' (Barnett 1997), and this may affect graduates' understandings of the purpose and aspirations of environmental professionalism. I suggest that elite and technical understandings of professionalism may affect the professionals' ability to implement environmental policy. Australia has an admirable record of developing environmental policy. However, public concern about a lack of resolution for many environmental issues suggests that professionals may be struggling to successfully implement policy in any meaningful way. Such challenges for environmental professionals may be a result of a professional environmental education that does not engage graduates within ideas that professional practice may require community participation and collaboration as key themes. Elective 3 (Vol. 2) is a case study investigating the development of conservation policies by the Ballarat community. The case demonstrates how the dominant social paradigm informs community views about environmental issues emphasising a technical emphasis and hierarchical arrangements of power and authority between local government and the community. The community view appears to be that environmental action should be mainly individualistic and behaviourist, which I suggest may have resulted from a technical framework for environmental knowledge. The community view of environmental issues resonates with the dominant view promoted by professional environmental education in most universities. In conclusion, my thesis is a representation of my challenges to critically engage in possible relationships among theories, practices and circumstances in my workplace, with a view to addressing what I perceive as a 'gap' between my own theory and practice. The motivation for this critical examination is to question the purpose of my professional environmental education practice in relation to the challenges of my emergent environmental ideology. The difficulty of promoting my critical theorising in a traditional small science faculty, within a corporate university, with my scientific background, is acknowledged. Nevertheless, based on my own experiences, I recommend that academics involved in professional environmental education should be encouraged to explore relationships between their own theories and practices in their own professional settings. I suggest that the search for a land ethic or land ethics, and one's 'place' in the 'land', can be an effective platform for this process.

Instructional strategies integrating cognitive style construct : a meta-knowledge processing model

The overarching goal of this dissertation was to evaluate the contextual components of instructional strategies for the acquisition of complex programming concepts. A meta-knowledge processing model is proposed, on the basis of the research findings, thereby facilitating the selection of media treatment for electronic courseware. When implemented, this model extends the work of Smith (1998), as a front-end methodology, for his glass-box interpreter called Bradman, for teaching novice programmers. Technology now provides the means to produce individualized instructional packages with relative ease. Multimedia and Web courseware development accentuate a highly graphical (or visual) approach to instructional formats. Typically, little consideration is given to the effectiveness of screen-based visual stimuli, and curiously, students are expected to be visually literate, despite the complexity of human-computer interaction. Visual literacy is much harder for some people to acquire than for others! (see Chapter Four: Conditions-of-the-Learner) An innovative research programme was devised to investigate the interactive effect of instructional strategies, enhanced with text-plus-textual metaphors or text-plus-graphical metaphors, and cognitive style, on the acquisition of a special category of abstract (process) programming concept. This type of concept was chosen to focus on the role of analogic knowledge involved in computer programming. The results are discussed within the context of the internal/external exchange process, drawing on Ritchey's (1980) concepts of within-item and between-item encoding elaborations. The methodology developed for the doctoral project integrates earlier research knowledge in a novel, interdisciplinary, conceptual framework, including: from instructional science in the USA, for the concept learning models; British cognitive psychology and human memory research, for defining the cognitive style construct; and Australian educational research, to provide the measurement tools for instructional outcomes. The experimental design consisted of a screening test to determine cognitive style, a pretest to determine prior domain knowledge in abstract programming knowledge elements, the instruction period, and a post-test to measure improved performance. This research design provides a three-level discovery process to articulate: 1) the fusion of strategic knowledge required by the novice learner for dealing with contexts within instructional strategies 2) acquisition of knowledge using measurable instructional outcome and learner characteristics 3) knowledge of the innate environmental factors which influence the instructional outcomes This research has successfully identified the interactive effect of instructional strategy, within an individual's cognitive style construct, in their acquisition of complex programming concepts. However, the significance of the three-level discovery process lies in the scope of the methodology to inform the design of a meta-knowledge processing model for instructional science. Firstly, the British cognitive style testing procedure, is a low cost, user friendly, computer application that effectively measures an individual's position on the two cognitive style continua (Riding & Cheema,1991). Secondly, the QUEST Interactive Test Analysis System (Izard,1995), allows for a probabilistic determination of an individual's knowledge level, relative to other participants, and relative to test-item difficulties. Test-items can be related to skill levels, and consequently, can be used by instructional scientists to measure knowledge acquisition. Finally, an Effect Size Analysis (Cohen,1977) allows for a direct comparison between treatment groups, giving a statistical measurement of how large an effect the independent variables have on the dependent outcomes. Combined with QUEST's hierarchical positioning of participants, this tool can assist in identifying preferred learning conditions for the evaluation of treatment groups. By combining these three assessment analysis tools into instructional research, a computerized learning shell, customised for individuals' cognitive constructs can be created (McKay & Garner,1999). While this approach has widespread application, individual researchers/trainers would nonetheless, need to validate with an extensive pilot study programme (McKay,1999a; McKay,1999b), the interactive effects within their specific learning domain. Furthermore, the instructional material does not need to be limited to a textual/graphical comparison, but could be applied to any two or more instructional treatments of any kind. For instance: a structured versus exploratory strategy. The possibilities and combinations are believed to be endless, provided the focus is maintained on linking of the front-end identification of cognitive style with an improved performance outcome. My in-depth analysis provides a better understanding of the interactive effects of the cognitive style construct and instructional format on the acquisition of abstract concepts, involving spatial relations and logical reasoning. In providing the basis for a meta-knowledge processing model, this research is expected to be of interest to educators, cognitive psychologists, communications engineers and computer scientists specialising in computer-human interactions.

Superhydrophobic polyimide films with a hierarchical topography : combined replica molding and layer-by-layer assembly

Artificial superhydrophobic surfaces with a hierarchical topography were fabricated by using layer-by-layer assembly of polyelectrolytes and silica nanoparticles on microsphere-patterned polyimide precursor substrates followed with thermal and fluoroalkylsilane treatment. In this special hierarchical topography, micrometer-scale structures were provided by replica molding of polyamic acid using two-dimensional arrays of polystyrene latex spheres as templates, and nanosized silica particles were then assembled on these microspheres to construct finer structures at the nanoscale. Heat treatment was conducted to induce chemical cross-linking between polyelectrolytes and simultaneously convert polyamic acid to polyimide. After surface modification with fluoroalkylsilane, the as-prepared highly hydrophilic surface was endowed with superhydrophobicity due to the bioinspired combination of low surface energy materials and hierarchical surface structures. A superhydrophobic surface with a static water contact angle of 160 degrees and sliding angle of less than 10 degrees was obtained. Notably, the polyimide microspheres were integrated with the substrate and were mechanically stable. In addition, the chemical and mechanical stability of the polyelectrolyte/silica nanoparticle multilayers could be increased by heat-induced cross-linking between polyelectrolytes to form nylon-like films, as well as the formation of interfacial chemical bonds.

Adaptive hierarchical scheduling policy for enterprise grid computing systems

In an enterprise grid computing environments, users have access to multiple resources that may be distributed geographically. Thus, resource allocation and scheduling is a fundamental issue in achieving high performance on enterprise grid computing. Most of current job scheduling systems for enterprise grid computing provide batch queuing support and focused solely on the allocation of processors to jobs. However, since I/O is also a critical resource for many jobs, the allocation of processor and I/O resources must be coordinated to allow the system to operate most effectively. To this end, we present a hierarchical scheduling policy paying special attention to I/O and service-demands of parallel jobs in homogeneous and heterogeneous systems with background workload. The performance of the proposed scheduling policy is studied under various system and workload parameters through simulation. We also compare performance of the proposed policy with a static space–time sharing policy. The results show that the proposed policy performs substantially better than the static space–time sharing policy.

Socioeconomic position and the tracking of physical activity and cardiorespiratory fitness from childhood to adulthood

This study examined the influence of childhood socioeconomic position (SEP) and social mobility on activity and fitness tracking from childhood into adulthood. In a prospective cohort of 2,185 Australian adults (aged 26–36 years), first examined in 1985 (at ages 7–15 years), self-reported physical activity and cardiorespiratory fitness (subsample only) were measured. SEP measures included retrospectively reported parental education (baseline) and own education (follow-up). There was little evidence of a relation between childhood SEP and activity tracking, but high childhood SEP (maternal education) was associated with a 59% increased likelihood of persistent fitness, and medium childhood SEP (paternal and parental education) was associated with a 33%–36% decreased likelihood of persistent fitness. Upward social mobility was associated with a greater likelihood of increasing activity (38%–49%) and fitness (90%), and persistently high SEP was associated with a greater likelihood of increasing activity (males: 58%) and fitness (males and females combined: 89%). In conclusion, persistently high SEP and upward social mobility were associated with increases in activity and fitness from childhood to adulthood. Findings highlight socioeconomic differentials in activity and fitness patterns and suggest that improvements in education may represent a pathway through which physical activity levels can be increased and health benefits achieved

Mining multi-modal crime patterns at different levels of granularity using hierarchical clustering

The appearance of patterns could be found in different modalities of a domain, where the different modalities refer to the data sources that constitute different aspects of a domain. Particularly, the domain of our discussion refers to crime and the different modalities refer to the different data sources such as offender data, weapon data, etc. in crime domain. In addition, patterns also exist in different levels of granularity for each modality. In order to have a thorough understanding a domain, it is important to reveal the hidden patterns through the data explorations at different levels of granularity and for each modality. Therefore, this paper presents a new model for identifying patterns that exist in different levels of granularity for different modes of crime data. A hierarchical clustering approach - growing self organising maps (GSOM) has been deployed. Furthermore, the model is enhanced with experiments that exhibit the significance of exploring data at different granularities.

Exercise and Sports Science Australia position statement on exercise training and chronic heart failure

Chronic heart failure (CHF) is a complex syndrome characterised by progressive decline in left ventricular function, low exercise tolerance and raised mortality and morbidity. Regular exercise participation has been shown to be a safe and effective treatment modality in the majority of CHF patients, partially reversing some of the maladaptations evident in myocardial and skeletal muscle function, and resulting in improvements in physical fitness and quality of life, and perhaps reduced mortality. The volume and intensity of exercise that is recommended depends on the syndrome severity, however in most patients it should consist of a combination of low-to-moderate intensity aerobic (endurance) exercise on most days of the week and individually prescribed low-to-moderate intensity resistance (strength) training at least twice per week. Additionally, all patients should be closely monitored prior to and during exercise for contraindications by an appropriately trained health professional. The purpose of this statement is to inform and guide exercise practitioners and health professionals in the safe and effective prescription and supervision of exercise for patients with CHF.