7 research outputs found
A longitudinal study of the biometric and refractive changes in full-term infants during the first year of life
AbstractChanges in ocular axial dimensions and refraction were followed longitudinally, using ultrasonography and retinoscopy, during the first year of life (mean ages 4–53 weeks) of a group of 20 full-term infants (10 male, 10 female). Using a mixed-model regression analysis, axial length changes as a function of time were found to be best described by a quadratic expression (AL=17.190+0.128x−0.0013x2, where AL is the axial length in mm and x is the age in weeks), while anterior chamber depth changed linearly (ACD=2.619+0.018x, where ACD is the anterior chamber depth in mm): lens thickness was essentially constant. Spherical equivalent refraction through most of the first year showed a steady reduction in hypermetropia (SER=2.982−0.032x, where SER is the spherical equivalent refraction in dioptres): astigmatism also tended to diminish. Mean hyperopic refractive errors through the year were negatively correlated with corresponding axial lengths (SER=12.583−0.541AL), but some individual subjects showed marked departures from this pattern. These results are discussed in relation to concepts of emmetropization
Trade-off analysis for marine protected area management
This paper outlines an approach to natural resource management that incorporates multiple objectives for protected area management within a decision-making framework. Both regulators and other major stakeholders are directly incorporated into the approach to enhance decision-making processes. We call this approach trade-off analysis. The approach uses a framework based on multi-criteria analysis (MCA) but involves stakeholders at all stages. This holistic approach is appropriate for multiple use, complex systems such as marine protected areas (MPAs), where many different users are apparently in conflict and where linkages and feedbacks between different aspects of the ecosystem and economy exist. The paper applies trade-off analysis to the case of Buccoo Reef Marine Park (BRMP) in Tobago. Stakeholder analysis is undertaken, and social, economic and ecological criteria identified. The impacts of four different development scenarios are evaluated for these criteria. Stakeholders are asked to weight different criteria and then the outcomes of different stakeholder weightings in the MCA are used to explore different management options. For BRMP, the MCA suggests consensus around development options characterised as limited tourism development for the area surrounding the park in association with the implementation of complementary environmental management. The approach has been used to enhance stakeholder involvement in decision-making and develop consensus-based approaches to management of the MP
Empathy, place and identity interactions for sustainability
Sustainability science recognises the need to fully incorporate cultural and emotional dimensions of environmental change to understand how societies deal with and shape anticipated transformations, unforeseen risks and increasing uncertainties. The relationship between empathy and sustainability represents a key advance in understanding underpinning human-environment relations. We assert that lack of empathy for nature and for others limits motivations to conserve the environment and enhance sustainability. Critically, the relationship between empathy and sustainability is mediated by place and identity that constrain and shape empathy's role in pro-environmental sustainability behaviour. We review emerging evidence across disciplines and suggest a new model exploring interactions between place, identity and empathy for sustainability. There are emerging innovative methodological approaches to observe, measure and potentially stimulate empathy for sustainability
Book reviews
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The Implementation Gap: Environmental Rhetoric Versus Reality in Lao Cai, Vietnam
International audienceThis study draws upon a case study of Lao Cai, a province recognized as one of the most important ecological regions in Vietnam, but also one of the most vulnerable to climate hazards. The province has recently adopted an action plan for climate change adaptation. However, the national authorities intend to promote Lao Cai as a major secondary city on the main route from China to Hanoi. In a context of rapid, strategic, state-driven urban development, I identify three main obstacles to effective implementation of environmental and climate change policies: (1) the pre-eminence of economic growth over any environmental goal, (2) the under- enforcement of existing regulations, and (3) a failure of environmental governance. Environmental risk management is mainly based on the reinforcement of defensive infrastructures (such as the river embankment) and the displacement of exposed people. These actions are likely inefficient in a context of increased major hazards that might put great pressure on displaced residents’ livelihoods. In other words, there is a wide gap between discourse and implementation