Characterization of conducting polymer coated synthetic fabrics for heat generation

Heat generation in fabrics coated with the conductive polymer polypyrrole was investigated. The PET fabrics were coated by chemical synthesis using four different oxidizing agent–dopant combinations. The samples from the four different dopant systems all show an increase in temperature when a fixed voltage is applied to the fabric. The antraquinone-2-sulfonic acid (AQSA) sodium salt doped polypyrrole coating was the most effective in heat generation whereas the sodium perchlorate dopant system was the least effective. The power density per unit area achieved in polypyrrole coated polyester–Lycra® fabric with 0.027 mol/l of AQSA acting as dopant was 430 W/m². The power density per unit area achieved for the sodium perchlorate system, using the same synthesis conditions, was 55 W/m².

The power of the 6 three model for enhancing academic teachers' capacities for effective online teaching and learning: benefits, initiatives and future directions

To gain the full educational benefits of the major new investments in corporate technologies supporting online teaching and learning it is argued that a strategic, systems based approach to academic professional development (APD) is required. Such an approach requires a clear view of the key areas of potential and enduring teaching and learning benefit which can be realised from online developments, including an understanding of the changing role of the academic teacher in higher education, the identification of the desired professional capacities to educate online, and the implementation of a number of coordinated initiatives to develop these professional capacities in order to engage constructively with the learning and technology opportunities. Based on previous work, we propose a 6three model of Academic Professional Capacities Development for effective APD of online teaching and learning. The model can help inform the actions of policy makers, executives and practitioners in ways that promote an authentic learning organisation.

The 6 by the power of 3 model for enhancing academic teachers' capacities for effective online teaching and learning: benefits, initiatives and future directions

To gain the full educational benefits of the major new investments in corporate technologies supporting online teaching and learning it is argued that a strategic, systems based approach of academic professional development (APD) is required. Such an approach requires a clear view of the key areas of potential and enduring teaching and learning benefit which can be realised from online developments, including an understanding of the changing role of the academic teacher in higher education, the identification of the desired professional capacities to educate online and the implementation of a number of coordinated initiatives to develop these professional capacities in order to engage constructively with the learning and technology opportunities. Based on previous work, we propose a '6' by the power of '3' model of Academic Professional Capacities Development for effective APD of online teaching and learning. The model can help inform the actions of policy makers, executives and practitioners in ways that promote an authentic learning organisation.

Managing complexity and insitutionalization : power and politics in ERP implementation in an Australian university

This chapter reports a case study of ERP implementation in an institution of higher education. The ERP is one based on integration of administrative tasks based on Oracle® systems and is successful both in terms of its embeddedness in institutionalized practice and in supporting that university's operations. The key issue that emerged from the study showed that understanding complexity, institutionalized practice, and the power relations in existence enable the implementation to be more effective, as it can be managed when understood. The chapter argues that organizations reproduce practice and that an ERP challenges that. To deal with that challenge, social dramas emerge wherever power exists, and the resulting conflicts challenge the effectiveness of the systems put in place. In this case study, the key role of the project champion in resolving the social dramas became evident.

The power of rhythm and words : from little things big things grow

Primary literacy teacher educators need to re-conceptualise the ways in which they work together to model effective interdisciplinary practice. This paper reports on such practice in a team teaching unit for postgraduate students undertaking the Bachelor of Teaching (Primary/Secondary) at Deakin University, Melbourne. The interdisciplinary (Social Education, Language and Music) unit, a first in the Faculty of Education was conceptualised to challenge both lecturer and student (local and international) to 'rethink' their understandings of pedagogy, multi-literacies and teacher preparedness. For the purpose of this paper, the authors reflect on a particular team teaching experience whereby a text (song) was used to teach both the elements of music and literacy pedagogy. It opened up new possibilities for students to engage and participate with each discipline as well as how one area can inform and further deepen the understanding for learners of the other. For example, musical notation and score was used to explain and use the 4 resource model (Luke and Freebody, 1990). The authors contend that crossdisciplinary work cannot be reduced to simple cooperation among disciplines but that primary literacy teacher educators need to develop new conceptual frameworks for learning that will enhance their understandings of pedagogy and assist in preparing teachers in a challenging world.

Location based power control for energy critical sensors in a disconnected network

This paper provides a location based power control strategy for disconnected sensory nodes deployed for long term service. Power conservation is of importance particularly when sensors communicate with a mobile robot used for data collection. The proposed algorithm uses estimations from a Robust Extended Kalman Filter (REKF) with RSSI measurements, in implementing a sigmoid function based power control algorithm which essentially approaches a desired power emission trajectory based on carrier-to-interference ratios(CIR) to ensure interferenceless reception. The more realistic modelling we use incorporates physical dynamics between the mobile robot and the sensors together with the wireless propagation parameters between the transmitter and receiver to formulate a sophisticated and effective power control strategy for the exclusive usage of energy critical disconnected nodes in a sensory network increasing their life span.

Nursing work and nursing knowledge : exploring the work of women's health nurses, patterns of power and praxis

The majority of women's health nurses in this study work in generalist community health centres. They have developed their praxis within the philosophy and policies of the broader women's health movement and primary health care principles in Australia. The fundamental assumption underlying this study is that women's health nurses possess a unique body of knowledge and clinical wisdom that has not been previously documented and explored. The epistemological base from which these nurses' operate offers important insights into the substantive issues that create and continually shape the practice world of nurses and their clients. Whether this represents a (re)construction of the dominant forms of health care service delivery for women is examined in this study. The study specifically aims at exploring the practice issues and experience of women's health service provision by women's health nurses in the context of the provision of cervical cancer screening services. In mapping this particular group of nurses practice, it sets out to examine the professional and theoretical issues in contemporary nursing and women's health care. In critically analysing the powerful discourses that shape and reshape nursing work, the study raises the concern that previous analyses of pursing work tend to universalise the structural and social subordination of nurses and nursing knowledge. This universalism is most often based on examples of midwifery and nursing work in hospital settings, and subsequently, because of these conceptualisations, all of nursing is too often deemed as a dependent occupation, with little agency, and is analysed as always in relation to medicine, to hospitals, to other knowledge forms. Denoting certain discourses as dominant proposes a relationship of power and knowledge and the thesis argues that all work relations and practices in health are structured by certain power/knowledge relations. This analysis reveals that there IX are many competing and complimentary power/knowledge relations that structure nursing, but that nursing, and in particular women's health nurses, also challenge the power/knowledge relations around them. Through examining theories of power and knowledge the analysis, argues that theoretical eclecticism is necessary to address the complex and varied nature of nursing work. In particular it identifies that postmodern and radical feminist theorising provide the most appropriate framework to further analyse and interpret the work of women's health nurses. Fundamental to the position argued in this thesis is a feminist perspective. This position creates important theoretical and methodological links throughout the whole study. Feminist methodology was employed to guide the design, the collection and the analysis. Intrinsic to this process was the use of the 'voices' of women's health nurses as the basis for theorising. The 'voices' of these nurses are highlighted in the chapters as italicised bold script. A constant companion along the way in examining women's health nurses' work, was the reflexivity with feminist research processes, the theoretical discussions and their 'voices'. Capturing and analysing descriptive accounts of nursing praxis is seen in this thesis as providing a way to theorise about nursing work. This methodology is able to demonstrate the knowledge forms embedded in clinical nursing praxis. Three conceptual threads emerge throughout the discussions: one focuses on nursing praxis as a distinct process, with its own distinct epistemological base rather than in relation to 'other' knowledge forms; another describes the medical restriction and opposition as experienced by this group of nurses, but also of their resistance to medical opposition. The third theme apparent from the interviews, and which was conceptualised as beyond resistance, was the description of the alternative discourses evident in nursing work, and this focused on notions of being a professional and on autonomous nursing praxis. This study concludes that rather than accepting the totalising discourses about nursing there are examples within nursing of resistance—both ideologically and X in practice—to these dominant discourses. Women's health nurses represent an important model of women's health service delivery, an analysis of which can contribute to critically reflecting on the 'paradigm of oppression' cited in nursing and about nursing more generally. Reflecting on women's health service delivery also has relevance in today's policy environment, where structural shifts in Commonwealth/State funding arrangements in community based care, may undermine women's health programs. In summary this study identifies three important propositions for nursing: • nursing praxis can reconstruct traditional models of health care; • nursing praxis is powerful and able to 'resist' dominant discourses; and • nursing praxis can be transformative. Joining feminist perspectives and alternative analyses of power provides a pluralistic and emancipatory politics for viewing, describing and analysing 'other' nursing work. At the micro sites of power and knowledge relations—in the everyday practice worlds of nurses, of negotiation and renegotiation, of work on the margins and at the centre—women's health nurses' praxis operates as a positive, productive and reconstructive force in health care.

Developing english skills through reflective portfolios in Hong Kong universities

This research concerns the use of portfolios by teachers of English (L2) to assist non-native speakers in Hong Kong universities to complete their studies in English. Portfolios as an English learning tool have yet to win converts from the ranks of language teachers in Hong Kong chiefly because of concerns about reliability and fairness. Two recent initiatives in Hong Kong have, however, prompted a reappraisal of the place of portfolios in English language learning. They include the use of learning portfolios in secondary school and ePortfolios by university students for learning and employment purposes.

As an English (L2) teacher of many years, I initiated my research to investigate the experiences of seven university students in Hong Kong in using reflective portfolios for English learning. Three research questions framed my research: 1) in what ways can reflective portfolios impact on L2 learning strategies? 2) what are the effects of reflective portfolios on progress in L2 acquisition as perceived by students? 3) what are the perceptions of university students towards reflective portfolios as a method of L2 learning?

To gain a holistic understanding of the complex phenomena under scrutiny, a case study methodology and grounded theory were utilised, the former to organise and generate qualitative data, and the latter to analyse data from three sources provided by the seven participating students: semi-structured interviews, portfolio artefacts, and weekly learning diaries.

There were two levels of data analysis. For the first level, analysis focused on coded data from portfolio artefacts, diary entries and interview transcripts as reported by students. The second level involved analysis from the Confucian and sociocultural perspectives. I pursued interpretation and continuous refinement of the data by using techniques drawn from grounded theory. The findings revealed that students generally employed a wide spread of L2 learning strategies in the cognitive, meta-cognitive, and socio-affective domain, reported increased awareness of effective language strategies, and considered portfolios a means of supporting time management and record-keeping, and a site for extended writing practice through reflection.

The findings suggest that students display a cyclical, context-specific shift in learning conception from quantitative to qualitative. Connected to this is students’ apparent ability to formulate strategic responses to externally imposed demands. It is found that such responses are culturally triggered, underpinned by Confucian beliefs. Although the Confucian tradition emphasises respect for established authority, the findings point to students’ creative re-configuration of mental schemata to engender change in role enactment and power relations, with the portfolio as a mediating tool of their experiences.

Based on the findings, I argue that my research has addressed the three research questions and contributed to two crucial aspects of L2 learning. The first pertains to the need for a balanced view of individual effort and social context in second language acquisition, corroborating the significant link between context and learner engagement. Another contribution centres on an enhanced understanding of the relationship between portfolios, reflection and L2, where students’ diaries in English and portfolio artefacts enable them to engage in critical reflection and to identify strategies for L2 improvement.

Effective anomaly detection in sensor networks data streams

This paper addresses a major challenge in data mining applications where the full information about the underlying processes, such as sensor networks or large online database, cannot be practically obtained due to physical limitations such as low bandwidth or memory, storage, or computing power. Motivated by the recent theory on direct information sampling called compressed sensing (CS), we propose a framework for detecting anomalies from these largescale data mining applications where the full information is not practically possible to obtain. Exploiting the fact that the intrinsic dimension of the data in these applications are typically small relative to the raw dimension and the fact that compressed sensing is capable of capturing most information with few measurements, our work show that spectral methods that used for volume anomaly detection can be directly applied to the CS data with guarantee on performance. Our theoretical contributions are supported by extensive experimental results on large datasets which show satisfactory performance.

Annual feedback is an effective tool for a sustained increase in calcium intake among older women

We aimed to optimize calcium intake among the 2,000+ older women taking part in the Vital D study. Calcium supplementation was not included in the study protocol. Our hypothesis was that annual feedback of calcium intake and informing women of strategies to improve calcium intake can lead to a sustained increase in the proportion of women who consume adequate levels of the mineral. Calcium intake was assessed on an annual basis using a validated short food frequency questionnaire (FFQ). Supplemental calcium intake was added to the dietary estimate. Participants and their nominated doctor were sent a letter that the participant’s estimated daily calcium intake was adequate or inadequate based on a cutoff threshold of 800 mg/day. General brief statements outlining the importance of an adequate calcium intake and bone health were included in all letters. At baseline, the median daily consumption of calcium was 980 mg/day and 67 percent of 1,951 participants had calcium intake of at least 800 mg per day. Of the 644 older women advised of an inadequate calcium intake at baseline (< 800 mg/day), 386 (60%) had increased their intake by at least 100 mg/day when re-assessed twelve months later. This desirable change was sustained at 24 months after baseline with almost half of these women (303/644) consuming over 800 mg calcium per day. This study devised an efficient method to provide feedback on calcium intake to over 2,000 older women. The improvements were modest but significant and most apparent in those with a low intake at baseline. The decreased proportion of these women with an inadequate intake of calcium 12- and 24-months later, suggests this might be a practical, low cost strategy to maintain an adequate calcium intake among older women.

Improved GART neural network model for pattern classification and rule extraction with application to power systems

Generalized adaptive resonance theory (GART) is a neural network model that is capable of online learning and is effective in tackling pattern classification tasks. In this paper, we propose an improved GART model (IGART), and demonstrate its applicability to power systems. IGART enhances the dynamics of GART in several aspects, which include the use of the Laplacian likelihood function, a new vigilance function, a new match-tracking mechanism, an ordering algorithm for determining the sequence of training data, and a rule extraction capability to elicit if-then rules from the network. To assess the effectiveness of IGART and to compare its performances with those from other methods, three datasets that are related to power systems are employed. The experimental results demonstrate the usefulness of IGART with the rule extraction capability in undertaking classification problems in power systems engineering.

Electrical power generation from randomly-oriented electrospun nanofibrous nonwoven

In this study, we have demonstrated that randomly-oriented electrospun PVDF nanofiber nonwovens can be used directly as an active layer to generate electrical power with a voltage output as high as 4 volt and current 4 micoramp scales on a small nonwoven piece. This discovery may provide a simple, efficient, cost-effective and flexible solution to self-powering of microelectronics for various purposes.