2,428 research outputs found

    Research at NASA's NFAC wind tunnels

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    The National Full-Scale Aerodynamics Complex (NFAC) is a unique combination of wind tunnels that allow the testing of aerodynamic and dynamic models at full or large scale. It can even accommodate actual aircraft with their engines running. Maintaining full-scale Reynolds numbers and testing with surface irregularities, protuberances, and control surface gaps that either closely match the full-scale or indeed are those of the full-scale aircraft help produce test data that accurately predict what can be expected from future flight investigations. This complex has grown from the venerable 40- by 80-ft wind tunnel that has served for over 40 years helping researchers obtain data to better understand the aerodynamics of a wide range of aircraft from helicopters to the space shuttle. A recent modification to the tunnel expanded its maximum speed capabilities, added a new 80- by 120-ft test section and provided extensive acoustic treatment. The modification is certain to make the NFAC an even more useful facility for NASA's ongoing research activities. A brief background is presented on the original facility and the kind of testing that has been accomplished using it through the years. A summary of the modification project and the measured capabilities of the two test sections is followed by a review of recent testing activities and of research projected for the future

    Influence of Media on Overweight and Obesity Among Latino Youth

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    Outlines findings about how media marketing affects the health-related behaviors of Latino youth, including trends in television viewing, fast-food advertisement in low-income Latino communities, and snacking and caloric intake. Lists policy implications

    The feasibility of a cognitive behavioural therapy group for men with mild/moderate cognitive impairment

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    Memory aid groups have often been used as a method for teaching mnemonic strategies to older adults in early stages of dementia. This study describes the use of CBT to address unhelpful memory-related beliefs in three older men with mild/moderate dementia and associated low mood or anxiety. The members were able to participate and engage in the sessions, and changes in behaviour, cognition and affect were monitored over the course of a 7 week group intervention. Recommendations are made for further research

    Physical Activity, Overweight and Obesity Among Latino Youth

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    Highlights rates of physical activity and overweight and obesity among Latino youth compared with other groups; the role of environmental, socioeconomic, and cultural factors; and policy implications and interventions for increasing physical activity

    Accessing emergency rest centres in the UK - lesson learnt

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    Emergency rest centres (ERC) are premises that are used for the temporary accommodation of evacuees during an emergency situation. They form an important part of emergency response, by providing a focal point for receiving people and providing food, shelter, information and support. The Disability Discrimination Act 2005 creates a legislative right for ‘reasonable’ access to goods and services for disabled people. This legislation does not differentiate between emergency and non emergency situations which means that those with a responsibility for emergency planning need to consider the accessibility of ERCs. This article examines ERC provision and reviews access for disabled people. It focuses on a study of three ERCs that were established in different local authority areas within the Yorkshire and Humber region in the UK during a flooding event on 25th June 2007. While uncovering many instances of good practise, the results from the research also identified a number of lessons to be learnt, in particular it was noted that the main barriers to access were encountered with: • Facilities and elements that did not comprise part of the buildings normal operation, such as the provision of bedding, medical assistance and effective communication; and • Facilities that would not normally be expected to be used to the extent, or duration, whilst the emergency rest centre was in operation, such as the provision of adequate welfare facilities. The research also noted that Civil Protection Legislation within the UK contains limited instruction or guidance to those with responsibility for Emergency Rest Centre provision. This provides little impetus for Emergency Planners to consider the needs of disabled people. This research has broad implications for local authorities and national government representatives. It identifies a need for those with responsibility for emergency planning and response to strengthen their knowledge of disabled people, and to adopt a more holistic approach to the provision of emergency planning and response

    'But I knew better': Permeating the Correlationist Membrane in the Drama Classroom

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    There is an abundance of studies about engagement in the drama process changing directions in thinking. This paper explores how and why these changes happen. Primarily drawing on Hume's early studies about thought and thought processes, a model of 'dramatic fear' is proposed as a possible dynamic context for thinking in drama. The story of year ten student, Nina, illuminates the theoretical structure proposed as it unfolded in a GCSE drama lesson. Her story provides the context for a further exploration into Meillassoux's 'moments of unreason' whereby we catch glimpses of the 'thing in itself' and momentarily penetrate the correlationist membrane. Key words: Hume, Meillassoux, archetype, fossil, moments of unreason, correlationism, drama, rol

    The Mark of the Beast

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    \u3ci\u3eThe man who was\u3c/i\u3e

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    book consisted of three chapters: The man who was-- The man who would be king -- Moti Guj--mutinee

    Prescribed Fire Effects on Water Quality Variables in the Southern Appalachian Region

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    The goal of this thesis was to fill a contemporary gap in empirical knowledge on prescribed fires effects on water quality in the forests of the Southern Appalachian Mountains. To accomplish this goal, I conducted an extensive literature review on fire effects on specific water quality variables: sediment yield and macronutrients, specifically nitrogen (N) and phosphorous (P) (Chapter 1); designed and executed a field study examining sub-surface nutrient pool response to prescribed fire at a landscape-scale (Chapter 2) and conducted a controlled, simulated rainfall experiment measuring sediment yield and nutrient exports from burnt litter samples collected from three distinct Southeastern forest types (Chapter 3). The objective of these three chapters was to examine water quality variable response to burning at different spatial scales in Southeastern forests. The results of Chapter 2 suggest that prescribed fire can cause a significant pulse of N and P, but this pulse is ephemeral and likely benefits forest productivity. The experimental data collected in Chapter 3 suggests that low-to-moderate burn severity does not cause significant erosion response in Southeastern forests. However, sediment yield in runoff did significantly increase at the highest burn severity treatment in all forest types, suggesting that retained litter at low-to-moderate burn severity reduces surface runoff but also that severely burned patches can function as sediment sources throughout a landscape. Burning did not readily increase the availability of N or P in surface runoff or leachate. This thesis concludes that prescribed fire as it is practiced in forests of the Southern Appalachian Mountains, poses little risk to above and below-ground water quality
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