Conference Posters

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Now showing 1 - 10 of 12
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    Why so unfit?: Assessing potential barriers to exercise adoption in middle-aged men
    (The Author(s), 10/02/2005) Towers AJ; Flett RA; Seebeck RF; Towers, AJ; Flett, RA; Seebeck, RF
    Compared to women, men:  have a higher mortality rate  consistently die younger  are more susceptible to sedentary-lifestyle related diseases (e.g., cardiovascular disease)  are more likely to engage in behaviours that increase risk of injury, disease, or death  are less likely to seek help with physical health. Despite these statistics, the amount of literature devoted to women’s health in the past two decades still greatly exceeds that devoted to men’s health. The result is that we actually know very little about what influences men’s health behaviours. Introduction We utilised the transtheoretical model of exercise behaviour change to determine the pattern of exercise adoption in middle-aged men. We also analysed whether this pattern was influenced by three potential barriers to exercise: poor self-rated health, low levels of internal health locus of control, and high perceived stress levels. Hypotheses Compared to participants in the last stage of change (maintenance), it was hypothesised that participants in the first stage of exercise change (precontemplation) would have:  lower self-efficacy  less concern over the pros of exercise  more concern over the cons of exercise  poorer self-rated health  higher levels of perceived stress  lower levels of internal health locus of control [From Introduction]
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    Interception of PAR and RUE of irrigated sweet potato (Ipomea batatas L.) grown in a temperate climate
    (17/08/2014) Searle B; Shaw S; Sorensen I; Kerckhoffs LHJ
    Searle, B., S. Shaw, I. Sorensen and L.H.J. Kerckhoffs (2014). . Poster presentation at the (Brisbane, 17-22 August 2014). [EE4]
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    Short-term effects of deep ploughing on soil C stocks following renewal of a dairy pasture in New Zealand
    (14/08/2018) Calvelo Pereira R; Hedley MJ; Hanly J; Bretherton M; Horne D; Bishop P; Beare M; McNally S
    In New Zealand’s high producing permanent pastures the topsoil constitutes a large reservoir of soil organic carbon (SOC), which shows a marked stratification with depth. As consequence, sub-surface layers can contain 10 times less carbon than the surface soil. In permanent pastures with high carbon inputs, the formation and decomposition of these surface SOC stocks are often at equilibrium and C storage shows little change over time. Pastoral based dairy systems utilising ryegrass plus clover cultivars require renewal every 7-10 years to avoid reversion to less productive grasses. This may involve spring cultivation (either no-till, shallow till or full cultivation), summer forage cropping and autumn re-grassing. It has been hypothesised that SOC stocks can be increased by inverting the soil profile at pasture renewal through infrequent (once in 25-30 years) deep mouldboard ploughing (up to 30 cm depth). Increased C sequestration occurs when the new grass quickly rebuilds SOC stocks in the new topsoil (exposed low C sub-soil) at a rate faster than the decomposition of SOC in the rich former topsoil transferred to depth (now below 15 cm). However, benefits form accelerated C storage may be offset if crop and pasture production is adversely affected by the ploughing event (e.g., as result of compaction or excessive drainage). Hence, the aim of this work was to assess the short-term effects of infrequent inversion tillage of long-term New Zealand pastoral-based dairy soils under summer crop management and autumn re-grassing. An imperfectly drained Typic Fragiaqualf under dairy grazing was deep ploughed (approx. 25 cm) and re-sown with turnip in October 2016; other treatments included were shallow (< 10 cm) cultivation and no-till. The site was core sampled (0-40 cm) before cultivation and after 5 months of turnip growth to assess changes in SOC. Plant growth, herbage quality, and nutrient leaching were monitored during the 5-month period; root growth was assessed at the end of the crop rotation. Full cultivation transferred SOC below 10 cm depth, as expected. Soil bulk density decreased whereas root mass increased (10-20 cm depth; P < 0.05) under deep cultivation only. Besides, losses of mineral N were attenuated under deep tillage, resulting in a relative increase in crop yield. The potential for infrequent inversion tillage increasing soil C sequestration as a greenhouse gas (GHG) mitigation tool is currently being tested at other sites in New Zealand.
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    Sensitivity to Volcanic Field Boundary
    (17/04/2016) Whitehead M; Bebbington M; Cronin S; Moufti MR; Lindsay J
    Volcanic hazard analyses are desirable where there is potential for future volcanic activity to affect a proximal population. This is frequently the case for volcanic fields (regions of distributed volcanism) where low eruption rates, fertile soil, and attractive landscapes draw populations to live close by. Forecasting future activity in volcanic fields almost invariably uses spatial or spatio-temporal point processes with model selection and development based on exploratory analyses of previous eruption data. For identifiability reasons, spatio-temporal processes, and practically also spatial processes, the definition of a spatial region is required to which volcanism is confined. However, due to the complex and predominantly unknown sub-surface processes driving volcanic eruptions, definition of a region based solely on geological information is currently impossible. Thus, the current approach is to fit a shape to the known previous eruption sites. The class of boundary shape is an unavoidable subjective decision taken by the forecaster that is often overlooked during subsequent analysis of results. This study shows the substantial effect that this choice may have on even the simplest exploratory methods for hazard forecasting, illustrated using four commonly used exploratory statistical methods and two very different regions: the Auckland Volcanic Field, New Zealand, and Harrat Rahat, Kingdom of Saudi Arabia. For Harrat Rahat, sensitivity of results to boundary definition is substantial. For the Auckland Volcanic Field, the range of options resulted in similar shapes, nevertheless, some of the statistical tests still showed substantial variation in results. This work highlights the fact that when carrying out any hazard analysis on volcanic fields, it is vital to specify how the volcanic field boundary has been defined, assess the sensitivity of boundary choice, and to carry these assumptions and related uncertainties through to estimates of future activity and hazard analyses.
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    The decision appraisal model of regret
    (11/11/2005) Towers AJ; Flett RA; Hill SR
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    The changing nature of life regrets
    (18/11/2008) Towers AJ; Flett RA; Hill SR; Alpass FM
    IntroductionNew life stages promote new life goals and our most intense regrets should change in relation to our new goals and priorities.Research shows that 'Work' and 'Education' regrets are more common for older adults, who also tend to regret their inactions more than their actions. However, past research focuses in frequency and fails to indicate which regrets are actually more intense.We still don't know whether regret intensity changes with time and whether our most frequent regrets are also our most intense. Furthermore, we don't know whether regret-reducing processes, such as justification, are employed differentially across the life-span.
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    Primary health care nursing integration: Bridging the gap with co-designed shared care
    (19/09/2018) Batten L; Bevan M; Davies D; Cooper P