89,525 results

  • So let it fall : a thesis presented in partial fulfilment of the requirements for the degree of Master of Creative Writing, Massey University, Wellington, New Zealand

    Greeks, Stevie Renee

    Thesis
    Massey University

    What are you? This Master of Creative writing thesis seeks to explore this question and other questions it leads to. The thesis consists of a collection of linked autobiographical stories that explore identity, “So Let it Fall” (80%), and an accompanying exegesis, “What Are You?” (20%). Through the writing of “So Let it Fall” I tell the story of my own experiences as a multi-­‐ethnic woman growing up in New Zealand with mixed Māori, Chinese and Pākehā heritage. I explore this mixed identity throughout my project through evoking contrasts and contradictions within my own personal experiences. Specifically, I tell a story of living between two parents, and I focus on the separations that developed within my life and my identity as a result of living between two cultural upbringings. When evoking different identities in “So Let it Fall,” I wrote in scene to highlight formative moments in my life as well as scenes that illustrate important characteristics in each of my parents that have been formative of my own identity. In the creative work as a whole I delve into the different roles that I have moved through as I grew up, and by doing so discover who I am. The accompanying exegesis “What Are You?” places “So Let it Fall” in context by exploring the driving questions behind this project and explicating the creative process involved. The purpose of this exegesis is to illuminate the ideas and research that went into the production of “So Let it Fall.” This is done first by outlining why I chose the the form of autobiography, then examining a range of recent autobiographical writing in New Zealand and the various perspectives these works offer. Specifically, I discuss how the nonfiction writing of Witi Ihimaera, Manying Ip, Alice Te Punga-­‐Somerville, Tina Makereti, Tze Ming Mok, Ashleigh Young and Tracey Slaughter have informed my work. The intent of this combined creative and critical project is to find value in personal experiences and to create a wider pool of experiences within creative nonfiction writing in New Zealand. This thesis is not constructed to represent or speak for any ethnic groups or identities. This is formation of an identity through autobiographical writing that is my own.

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  • Development and trial of a methodology for the quantification and evaluation of home composting in Palmerston North, New Zealand : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Environmental Management (without major) at Massey University, Palmerston North, New Zealand

    Mensah, Sabina

    Thesis
    Massey University

    Home composting and commercial composting can be regarded as part of the Municipal Solid Waste Management system. Currently, in Palmerston North and more broadly in New Zealand, home composting plays an important, but an unquantified role in waste diversion. In Palmerston North, the quantity of organic waste diverted from landfill via home composting is not captured in the City’s official ‘waste assessment’ or recorded in the ‘waste management and minimisation plan’. Additionally, there appears to be little local social and technical data on why, who, when, what and how well home composting is practised. The aim of this study was to develop and implement a methodology for a mixed-method quantitative-qualitative study for the quantification and evaluation of home composting practices in Palmerston North. The development process for the research methodology drew upon an international literature review of scientific research, a range of municipal best practice guidelines for home composting and referenced elements of the New Zealand composting standard. The data collection for this study involved a combined telephone and door-to-door survey of 300 households (that is, approximately 1% of occupied dwellings, randomly selected from across all 15 suburbs in the City). To support the physical data collection, a novel home composting evaluation tool was also developed and trialled for empirical and quality assurance evaluation. The overall participation rate recorded in the present study (64%) was high and both data collection methods proved to be viable, yielding positive results. 36% of the households who participated in the present study were home composters which could mean that about 10,761 households in the occupied dwellings of the City practise home composting. At the time of the survey, it appears that nearly 4005 tonnes of organic waste was being treated via home composting processes. The results also indicated positive quality assurance of the home composting process and the resulting compost in the City. Whilst most of the study participants have a positive experience towards home composting, nuisance insects, rodents and odour problems were reported as issues. In terms of motivation around current and future home composting practices, a range of support options appears to be available for Councils to encourage and enhance this positive environmental practice.

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  • 'On the path, off the trail' : the relational work of nurses in outreach health : a thesis presented in partial fulfilment of the degree of Masters of Philosophy in Nursing at Massey University, Wellington, Aotearoa New Zealand

    Martin, Garrick

    Thesis
    Massey University

    This research study draws on the practice reflections of nurses working with people who are homeless and experiencing mental health problems to explore engagement as a core nursing practice in this setting. Therapeutic relationships and engagement are at the heart of nursing practice, and this is especially so in mental health nursing. Homeless and hard-­‐ to-­‐reach clients are an underserved population for mental health services. This research seeks to ‘make visible’ the ways in which mental health nurses uniquely and successfully engage with people experiencing homelessness and marginalisation, which in turn contributes to improved health and social outcomes for those people. Eight New Zealand registered nurses were interviewed and critical thematic analysis used to interpret the resulting data. The research findings were that nurses practicing in this specific homeless health context value relationships as a core nursing intervention. The work of engagement was described as uncertain. The research participants echoed the nursing theory and literature that argues nurses’ relational work is often unseen and undervalued within health systems. Relational work is described as a defining concept for mental health nursing yet the lack of visibility of this skilled work adds to nurses’ experience of uncertainty. The recommendations suggest ways to render visible and hold central the nursing work of engagement.

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  • The computational investigation of a dinuclear manganese complex with Jahn-Teller compression and elongation : MSc thesis, Chemistry, Institute of Fundamental Sciences, Massey University

    Buchanan, Jenna K

    Thesis
    Massey University

    Complexes that possess both Jahn-Teller compression and elongation effects at metal centres within the same molecule are extremely rare with only 11 examples known in the literature. Only two of these examples exist as discrete compounds. Jahn-Teller distortions influence metal-ligand bond lengths as well as the energy levels of the eg and t2g orbitals on the metal centre. The orientation of the Jahn-Teller axes have also been found to be an influential parameter in determining the exchange interactions in MnIII dimers. X-ray crystallographic analysis of a di-manganese coordination compound serendipitously synthesised by Willoughby suggested that the complex possessed both Jahn-Teller compression and elongation. Willoughby’s complex was synthesised in a very low yield and analysis of the crystals obtained by X-ray diffraction gave a structural determination of only moderate quality. In this research project, the complex was computationally modelled in order to investigate the Jahn-Teller distortions and the coupling between the manganese centres. The bond lengths, molecular orbitals and spin density plot were explored in order to investigate these properties. The computational results gave strong evidence that Jahn-Teller compression and elongation were present in the di-manganese complex. The modelled ferromagnetic complex was found to be lower in energy than the modelled antiferromagnetic complex. Attempts were also made to re-synthesise the di-manganese complex in suitable quantity for complete structural and magnetic characterisation. Several different routes were trialled but after exhaustive attempts it was not possible to repeat the synthesis of the dinuclear complex.

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  • Synthesis and in vitro and in vivo evaluation of antimalarial polyamines

    Liew, Lydia; Pearce, Allison; Kaiser, M; Copp, Brent (2013-11)

    Journal article
    The University of Auckland Library

    We recently reported that 1,14-diphenylacetamide derivatives of spermine exhibit potent nM in vitro growth inhibition properties of Plasmodium falciparum. In an effort to expand the structure-activity relationship of this compound class towards malaria, we have prepared and biologically tested a library that includes benzamide and 3-phenylpropanamide 'capping acid' groups, and polyamines that include spermine (PA3-4-3) and chain extended analogues PA3-8-3 and PA3-12-3. 2-Hydroxy and 2,5-dimethoxy analogues were typically found to exhibit the most potent activity towards the dual drug resistant strain K1 of P. falciparum with IC50's in the range of 1.3-9.5 nM, and selectivity indices (SI) of 42,300 to 4880. In vivo evaluation of three analogues against Plasmodium berghei was undertaken, with one demonstrating a modest 27.9% reduction in parasitaemia.

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  • Bio-inspired dimerisation of prenylated quinones directed towards the synthesis of the meroterpenoid natural products, the scabellones

    Chan, STS; Pullar, MA; Khalil, IM; Allouche, E; Barker, David; Copp, Brent (2015-03-18)

    Journal article
    The University of Auckland Library

    Stirring 2-geranyl-6-methoxy-1,4-hydroquinone in pyridine/O2 or 2-geranyl-6-methoxy-1,4-benzoquinone in pyridine/N2 affords the dimeric meroterpenoid natural products, scabellones A???C in modest to low yields and also identifies 2-methoxy-6-(4-methylpent-3-en-1-yl)-1,4-naphthoquinone (scabellone E) as a new natural product. The corresponding reaction of the des-methoxy analogue, 2-geranyl-1,4-benzoquinone in degassed pyridine for three days afforded the natural product cordiachromene A (15% yield) and 6-(4-methylpent-3-en-1-yl)-1,4-naphthoquinone (12%), the latter being a likely biosynthetic precursor to the marine meroterpenoid alkaloids, conicaquinones A and B.

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  • The unfulfilled pedagogical promise of the dialogic in writing: Intertextual writing instruction for diverse settings

    Jesson, Rebecca; Parr, Judith; McNaughton, Stuart (2013)

    Book item
    The University of Auckland Library

    In this chapter, the authors use writing as a site to consider the intersection between culture and effective pedagogy. They identify the general principles surrounding pedagogy, which is considered to be culturally responsive, and then examine the research to consider these principles specifically with regard to the teaching of writing in linguistically and culturally diverse contexts. The chapter explores ways to incorporate deliberately the general principles of culturally responsive pedagogy in the teaching of writing. It also offers a view of writing and writing instruction as dialogic, with the aim of incorporating students' existing knowledge and practices. By considering students' intertextual histories as a key resource for writing, the chapter considers that there is potential to develop instruction that is contingent upon and responsive to students' various experiences with texts.

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  • The scaling of population persistence with carrying capacity does not asymptote in populations of a fish experiencing extreme climate variability.

    White RSA; Wintle BA; McHugh PA; Booker DJ; McIntosh AR (2017)

    Journal article
    University of Canterbury Library

    Despite growing concerns regarding increasing frequency of extreme climate events and declining population sizes, the influence of environmental stochasticity on the relationship between population carrying capacity and time-to-extinction has received little empirical attention. While time-to-extinction increases exponentially with carrying capacity in constant environments, theoretical models suggest increasing environmental stochasticity causes asymptotic scaling, thus making minimum viable carrying capacity vastly uncertain in variable environments. Using empirical estimates of environmental stochasticity in fish metapopulations, we showed that increasing environmental stochasticity resulting from extreme droughts was insufficient to create asymptotic scaling of time-to-extinction with carrying capacity in local populations as predicted by theory. Local time-to-extinction increased with carrying capacity due to declining sensitivity to demographic stochasticity, and the slope of this relationship declined significantly as environmental stochasticity increased. However, recent 1 in 25 yr extreme droughts were insufficient to extirpate populations with large carrying capacity. Consequently, large populations may be more resilient to environmental stochasticity than previously thought. The lack of carrying capacity-related asymptotes in persistence under extreme climate variability reveals how small populations affected by habitat loss or overharvesting, may be disproportionately threatened by increases in extreme climate events with global warming.

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  • Force-Based Beam-Column Element with Multispring Models for Modelling Post-Tensioned Rocking Members

    Lee CL (2017)

    Conference Contributions - Other
    University of Canterbury Library

    Post-tensioned rocking beams and columns are popularly used in earthquake-resistant structures because of their selfcentring and low-damage response characteristics. Rocking actions in these members arise from the open-and-close action at their two end joints. A post-tensioned prestressing tendon passing through the members and the joints provides the axial and moment continuity between the members and the joints. Rocking at member interior joints may also be provided for segmental rocking members, which are usually used as bridge piers. Because the plane sections of the rocking members at the joints do not remain plane during the rocking action, the traditional beam-column finite elements based on classical plane-section beam theories are no longer applicable to simulate the rocking motions. As a result, a new type of beamcolumn finite element is needed. In this paper, a new rocking beam-column element is proposed. The new element allows multiple rocking joints to be anywhere within the beam-column members, and, therefore, is applicable to both traditional end rocking members and segmental rocking members. It is derived based on the mixed formulation that interpolates the force field exactly but satisfies the strain-displacement compatibility weakly. The formulation allows the relaxation of plane-section assumption at the rocking joints using the idea of multispring models. The new element can be readily used to simulate the seismic response of a large-scale structures with multiple rocking beams and columns. The new element accurately simulates the experimental results of a rocking column undergone a series of bi-axial loading. To demonstrate its advantages in large-scale simulations, the new element is also used to model the dynamic response of a large-scale structure. The results indicate that this new element shows highly promising potentials for large-scale structural analysis.

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  • Does the employment environment further disable people with disabilities? : a study of selected Christchurch employers and their perspectives of the employment situation for people with disabilities

    Studholme, Susan Jan (1994)

    Masters thesis
    University of Canterbury Library

    This study examined the employment experiences of people with disabilities and focused specifically on the service industries. In the research (predominantly overseas based) it has been noted that people with disabilities generally have greater difficulties obtaining and retaining employment and so are more likely to be unemployed or underemployed. Many factors contribute to this situation, but of particular interest to this study were the attitudes and behaviour of employers. Attitudes seemed to vary according to the type of disability and whether or not the employer had had experience of employing people with disabilities. Those with negative attitudes tended to behave in a more discriminatory manner. The discrimination shown to people with disabilities who seek employment has led to the recognition that they are part of what has been termed minority groups. Those groups will hopefully benefit from anti-discrimination legislation such as the Human Rights Act 1993. By means of a questionnaire, a selection of Christchurch employers were surveyed to see what the employment situation was for people with disabilities. The major findings were as follows. In relation to the attitude factors, employers with experience of employing people with disabilities generally displayed more positive attitudes than did those with no experience. Significantly more employers with experience expressed a greater willingness to employ people with disabilities, had incorporated disability into Equal Employment Opportunity (EEO) policies, and were prepared to make modification to the workplace. However, there was little difference in the ratings given by employers regarding the importance of certain selection criteria, indicating that employers placed great importance on the selection criteria. Although not significant, attitudes were also found to vary according to the type of disability (obvious versus non-obvious) in relation to the position held by the employee with a disability. So those with obvious disabilities were less likely to have jobs which required face-to-face and phone contact with customers, clients or the public. General information on the employment of people with disabilities was also obtained. Occupations held by people with disabilities varied between men and women. Women with disabilities were more often in clerical positions, while men worked as technicians, associate professionals, plant and machine assemblers and elementary workers. Larger organisations were found to be more likely to employ people with disabilities. Even though employers with experience were generally more receptive to employing people with disabilities, some still held negative attitudes. It is fair to say that people with disabilities did experience difficulties in employment as a result of the employment environment. As EEO policies increase and anti-discrimination legislation is implemented, these problems will hopefully be addressed. However, it will take more than new laws and policies to change the employment situation faced by people with disabilities. Fundamental social, economic and political changes are called for if the constraints which society places on people with disabilities are to be overcome. In the meantime, these constraints have the effect of compounding the disablement of people with disabilities who seek employment.

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  • CUPS: The affective force of 'things' on learning and subjectivity in early childhood education.

    Towle, Bridgette (2017)

    Masters thesis
    The University of Auckland Library

    This thesis inquires into the affective force of the material world on learning, subjectivity and creative expression in early childhood education. Inspired by Lenz Taguchi???s (2010a) notion of an intra-active pedagogy it (ad)ventures beyond the human-centrism of both cognitive development theory and social constructivist theory prevalent in Te Wh??riki (Ministry of Education, 1996), the New Zealand early childhood curriculum, to explore posthuman philosophies and theories associated with the ???material turn.??? Connections are made between new materialist feminist theory, Barad???s agential realist ontology, Deleuze and Guattari???s ontology of immanence, and Bennett???s theory of ???vital materiality??? in order to challenge habitual dualistic thinking, and to rethink material matter as immanent to lived practice and discursive meaning-making. In a move away from the positivist paradigms underpinning conventional qualitative research, the inquiry self-generates a new empirical performative process that transgresses the binary divides of science/philosophy and theory/practice. Its evolving performative process is activated and informed by a series of explorative and experimental ???acts??? that entangle onto-epistemological concepts and ideas with images/imaginings of cups, and cup~child happenings. Thus, the matter of the inquiry produces the process and vice versa. In an iterative process of moving and thinking-inthe- act, performative agentic matter ??? thoughts~concepts~cups~images~inquirer ??? merge and emerge in the mutual constitution of new and different ways of thinking and knowing-in-being. The performative inquiry culminates in creative acts of experimentation that unsettle boundaries between subject and object to generate a new ontological optics where the force of things, objects and artefacts matter in processes of transformational learning and becoming. Things are perceived as vibrant and agentic, and as existing in affective, material relationship with other matter, including humans. A relational material perspective generates the idea of an ethics of affection and a pedagogy of affection-ing that argues for the importance of sensing affective forces in-between things, people and places, what/whom/where is being made to matter (or not), and how educators can respond in affirmative, potentiating and inclusive ways.

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  • Exposure to stress across the life course and its association with anxiety and depressive symptoms: Results from the Australian Women???s Wellness After Cancer Program (WWACP)

    Seib, C; McCarthy, Alexandra; McGuire, A; Porter-Steele, J; Balaam, S; Ware, RS; Anderson, D (2017-11)

    Journal article
    The University of Auckland Library

    Objectives Earlier life stressors can increase the risk of persistent anxiety and depressive symptoms in women after cancer, though our understanding of the underlying mechanisms is limited. In this study, we tested alternative life course models to determine which best described associations between exposure to stressors in childhood, adolescence, and adulthood, and self-reported health in women previously treated for breast, gynaecological, and blood cancer. Study design Data were drawn from 351 Australian women within 2 years of completing active cancer treatment who were participating in the Women???s Wellness After Cancer Program (WWACP) randomised controlled trial. A model-building framework compared ???accumulative risk??? and ???sensitive period??? stress exposure hypotheses with the saturated model to determine best fit. Main outcome measures Symptoms of anxiety and depression were measured using the Center for Epidemiologic Studies Depression Scale (CES-D) and the Zung Self-rating Anxiety Scale (SAS). Results Participants with the greatest number of stressful life events (SLEs) reported higher anxiety scores and more depressive symptoms. Alternative life course models for psychological distress (measured through the CES-D and SAS) and stress were compared with the saturated model (i.e., the accumulative risk). The more restrictive ???sensitive period??? models were the best fit for depressive symptoms though none was significantly better than another. In contrast, an ???early sensitive??? model provided the best fit for anxiety data. Conclusions Anxiety scores were higher in women with early life stressors. This study highlights the need for whole-of-life supportive care approaches for women previously treated for cancer, which should include targeted strategies for effective management of stress, anxiety and depression.

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  • Transforming rural water governance: Towards deliberative and polycentric models?

    Neef, Andreas (2009)

    Journal article
    The University of Auckland Library

    In recent years, many countries have experienced a formal shift from command-and-control and prescriptive management of natural resources towards policy making and planning processes that build on collaboration, negotiation and deliberation among policy-makers, scientists and local stakeholders (Bouwen and Tallieu, 2004; Warner, 2006; Ansell and Gash, 2008). Public participation in environmental decision-making and implementation has become part and parcel of the environmental governance rhetoric in many industrialised countries (Sabatier et al., 2005; Messner et al., 2006; Cronin and Ostergren, 2007; Ferreyra et al., 2008; Medd and Marvin, 2008; Marshall, in press). In emerging economies and developing countries 'participatory environmental governance' has also been discussed as an alternative to centralised, top-down approaches towards natural resource conservation and management (e.g. Gupte and Bartlett, 2007; Neaera Abers, 2007; Huang et al., 2009). At the international policy level, the Rio Declaration and the Agenda 21 (1992), the World Summit on Sustainable Development (WSSD) Johannesburg Plan of Implementation (2002), and the 1998 UN Economic Commission for Europe (UNECE) "Convention on Access to Information, Public Participation in Decision-making and Access to Justice in Environmental Matters" (the so-called Aarhus Convention) have been the most important drivers for enhanced citizen participation in environmental governance.

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  • Joining the dots: The challenge of creating coherent school improvement

    Robinson, Viviane; Bendikson, Linda; McNaughton, Stuart; Wilson, Aaron; Zhu, Tong (2017)

    Journal article
    The University of Auckland Library

    Background/Context: Sustained school improvement requires adequate organizational and instructional coherence, yet, in typical high schools, subject department organization, norms of teacher professional autonomy, and involvement in multiple initiatives present powerful obstacles to forging a coherent approach to improvement. This study examines the relationships among coordination, coherence, and improved achievement in five New Zealand high schools voluntarily participating in an initiative to improve the achievement outcomes of underserved student groups. Purpose: The first purpose of this study is to develop a theoretical framework for describing and evaluating coordination and coherence and to apply it to the implementation of an improvement initiative. The second purpose is to examine the relationship between coherence and longitudinal trends in pass rates on national qualifications. Research Design: Adjusted odds ratios were used to compare the pass rates of students in the five high schools before and after the intervention. This analysis, conducted independently of the study of school coherence, yielded a group of schools whose pass rates had improved and a second group that had maintained stable pass rates through the course of the intervention. Using case studies written for each of the schools, we systematically compared the schools in each group on degree of coordination in five domains of activity and in overall coherence. Findings: There were considerable differences in degree of coordination between the two groups in three of the five domains. Improving schools were more tightly coordinated in how they organized to achieve results, in teacher professional learning, and in strategic leadership. Principal capability and willingness to address barriers to improved achievement, which was part of strategic leadership, was markedly greater in the improving than in the maintaining schools. In the remaining two domains, goal-setting and teacher culture, differences were smaller but still in the expected direction. The overall coherence of each improving school was independently evaluated as high, while the maintaining schools were evaluated as low or medium in overall coherence. Conclusions: We discuss the implications of coordination and coherence for the successful implementation of any school improvement initiative. We argue that, since educational work contains weak cues about the adequacy of the performance of any component activity, we cannot rely on adequate coordination emerging through the interactions of interdependent agents. More emphasis must be given, in coordination theory and improvement practice, to steering such interactions through task design , widely distributed expertise, and strategic leadership.

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  • Identifying the barriers and enablers in the implementation of the New Zealand and Australian Antenatal Corticosteroid Clinical Practice Guidelines

    Mc Goldrick, EL; Crawford, T; Brown, Julie; Groom, Katie; Crowther, Caroline (2016-10-28)

    Journal article
    The University of Auckland Library

    The ineffective implementation of evidence based practice guidelines can mean that the best health outcomes are not achieved. This study examined the barriers and enablers to the uptake and implementation of the new bi-national (Australia and New Zealand) antenatal corticosteroid clinical practice guidelines among health professionals, using the Theoretical Domains Framework.Semi-structured interviews or online questionnaires were conducted across four health professional groups and three district health boards in Auckland, New Zealand. The questions were constructed to reflect the 14 behavioural domains from the Theoretical Domains Framework. Relevant domains were identified by the presence of conflicting beliefs within a domain; the frequency of beliefs; and the likely strength of the impact of a belief on the behaviour using thematic analysis. The influence of health professional group and organisation on the different barriers and enablers identified were explored.Seventy-three health professionals completed either a semi-structured interview (n???=???35) or on-line questionnaire (n???=???38). Seven behavioural domains were identified as overarching enablers: belief about consequences; knowledge; social influences; environmental context and resource; belief about capabilities; social professional role and identity; and behavioural regulation. Five behavioural domains were identified as overarching barriers: environmental context and resources; knowledge; social influences; belief about consequences; and social professional role and identity. Differences in beliefs between individual health professional groups were identified within the domains: belief about consequences; social professional role and identity; and emotion. Organisational differences were identified within the domains: belief about consequences; social influences; and belief about capabilities.This study has identified some of the enablers and barriers to implementation of the New Zealand and Australian Antenatal Corticosteroid Clinical Practice Guidelines using the validated Theoretical Domains Framework, as perceived by health professionals. We have identified differences between individual health professional groups and organisations. The identification of these behavioural determinants can be used to enhance an implementation strategy, assist in the design of interventions to achieve improved implementation and facilitate process evaluations to understand why or how change interventions are effective.

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  • Effect of liquid depth on circulation in bubble columns: a visual study

    Chen, John; Jamialahmadi, M; Li, SM (1989-03)

    Journal article
    The University of Auckland Library

    A literature review on bubble column circulation is presented. Experimental results for two 2-D bubble columns of different aspect ratios are presented confirming that at low liquid depths the 'Gulf-stream' or 'cooling-tower' pattern is observed. When the liquid depth exceeds the column width, while 'the multiple circulation cell' model was not realised, two staggered rows of vortices which resemble the Karman vortex street was observed. The present work is a visual study of the circulation pattern in comparison with the generally accepted flow patterns.

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  • In vitro and in vivo biocompatibility of an Ag-bearing Zr-based bulk metallic glass for potential medical use

    Sun, Y; Huang, Y; Fan, H; Wang, Y; Ning, Z; Liu, F; Feng, D; Jin, X; Shen, J; Sun, J; Chen, John (2015-07)

    Journal article
    The University of Auckland Library

    A bulk metallic glass (BMG), Zr46(Cu4.5/5.5Ag1/5.5)46Al8 (ZrCuAlAg), has been prepared and systematically evaluated in terms of microstructure, corrosion resistance, wear resistance, cytotoxicity, and in vivo implantation, aiming at exploring its use as a novel biomedical material. For comparison, the above-mentioned tests were also performed on Zr51.9Cu23.3Ni10.5Al14.3, Zr51Ti5Ni10Cu25Al9, and Ti40Zr25Ni12Cu3Be20 BMGs, pure Ti and Ti???6Al???4V alloys. ZrCuAlAg BMG exhibits better corrosion resistance in both NaCl and Hank's solutions than other materials. The cell culture tests indicate that the BMGs exhibit a cytotoxicity of Grades 0???1, identical with pure Ti and Ti???6Al???4V alloys. Cell morphological analysis shows that the cells were flattened and well spread out on the surfaces of the BMGs, demonstrating their good cell compatibility. Animal tests proved that the ZrCuAlAg BMG implant performed as well as Ti???6Al???4V, without any obvious inflammation reaction at the implantation sites. The excellent biocompatibility of ZrCuAlAg BMG can be attributed to its amorphous structure-related high corrosion resistance as well as its unique composition, i.e. free of toxic Ni and Be, and containing biocompatible Ag element. It suggests that the Ag-bearing ZrCuAlAg BMG with excellent biocompatibility is promising for biomedical applications.

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  • Critical reflections on emancipatory partnerships in transition research: discerning perspectives of New Zealand Students on the autism spectrum

    Hart, SM; Gaffney, Janet; Hill, Mary (2017)

    Journal article
    The University of Auckland Library

    Transition from school involves different perspectives. Those most silenced in the process are transitioning students with significant disability, and similarly, they are alienated from the conduct of research. In this empirical project, three young men with complex autism conditions in Aotearoa New Zealand reclaimed their position as experts on their own transitions, and moreover, their contributions to research on the subject. Over a six-month ethnography, unique methodological adaptions were used to access personal insights and capabilities through emancipatory partnerships. The research forged collaborations that have the potential to be mirrored in future practices applicable to a transition with dignity.

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  • Aluminium Process Fault Detection and Diagnosis

    Abd Majid, NA; Taylor, Mark; Chen, John; Young, Brent (2015)

    Journal article
    The University of Auckland Library

    The challenges in developing a fault detection and diagnosis system for industrial applications are not inconsiderable, particularly complex materials processing operations such as aluminium smelting. However, the organizing into groups of the various fault detection and diagnostic systems of the aluminium smelting process can assist in the identification of the key elements of an effective monitoring system. This paper reviews aluminium process fault detection and diagnosis systems and proposes a taxonomy that includes four key elements: knowledge, techniques, usage frequency, and results presentation. Each element is explained together with examples of existing systems. A fault detection and diagnosis system developed based on the proposed taxonomy is demonstrated using aluminium smelting data. A potential new strategy for improving fault diagnosis is discussed based on the ability of the new technology, augmented reality, to augment operators??? view of an industrial plant, so that it permits a situation-oriented action in real working environments.

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  • Application of weather forecast in conjunction with price-based method for PCM solar passive buildings ??? An experimental study

    Barzin, R; Chen, John; Young, Brent; Farid, Mohammed (2016-02)

    Journal article
    The University of Auckland Library

    This study experimentally investigated the application of weather forecasting in combination with the price-based control method for solar passive buildings. Two identical lightweight test huts were used for the experimental study, one finished with ordinary gypsum board and the other finished with PCM-impregnated gypsum boards. Based on the experimental results, the application of weather forecast data showed significant energy saving when PCM is used. In some days, an electrical energy saving up to 90% per day was achieved using the proposed method. The results also showed that the application of inaccurate weather forecasts can significantly deteriorate performance of the control system and even lead to more energy consumption in the PCM hut.

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