3,437 research outputs found
If the tide is rising, who pays for the ark?
Two common goals of this meeting are to arrest the effects of sea level rise and other phenomena caused by Greenhouse Gases from anthropogenic sources ("GHG",) and to mitigate the effects. The fundamental questions are: (1) how to get there and (2) who should shoulder the cost? Given Washington gridlock, states, NGO's and citizens such as the Inupiat of the Village of Kivalina have turned to the courts for solutions. Current actions for public nuisance seek (1) to reduce and eventually eliminate GHG emissions, (2) damages for health effects and property damage—plus hundreds of millions in dollars spent to prepare for the foregoing. The U.S. Court of Appeals just upheld the action against the generators of some 10% of the CO2 emissions from human activities in the U.S., clearing the way for a trial featuring the state of the art scientific linkage between GHG production and the effects of global warming. Climate change impacts on coastal regions manifest most prominently through sea level rise and its impacts: beach erosion, loss of private and public structures, relocation costs, loss of use and accompanying revenues (e.g. tourism), beach replenishment and armoring costs, impacts of flooding during high water events, and loss of tax base. Other effects may include enhanced storm frequency and intensity, increased insurance risks and costs, impacts to water supplies, fires and biological changes through invasions or local extinctions (IPCC AR4, 2007; Okmyung, et al., 2007). There is an increasing urgency for federal and state governments to focus on the local and regional levels and consistently provide the information, tools, and methods necessary for adaptation. Calls for action at all levels acknowledge that a viable response must engage federal, state and local expertise, perspectives, and resources in a coordinated and collaborative effort. A workshop held in December 2000 on coastal inundation and sea level rise proposes a shared framework that can help guide where investments should be made to enable states and local governments to assess impacts and initiate adaptation strategies over the next decade. (PDF contains 5 pages
Aeroacoustic interactions of installed subsonic round jets
Additional noise sources are generated when an aircraft engine is mounted beneath a wing. The two main installation sources include: (1) reflection of the exhaust jet mixing noise from the underside of the wing, and (2) interaction between the turbulent jet plume and the trailing edge of the wing, or deployed flap. The strength, directivity and frequency content of these particular sources all serve to increase the time-averaged flyover aircraft noise level heard on the ground by residents beneath the flight path. As the bypass ratio and nacelle diameter of modern turbofan engines continues to increase, constraints on ground clearance are forcing under-wing-mounted engines to be coupled more closely to the wing and flap system, which, in turn, serves to accentuate both of these noise sources. Close-coupled nacelle-airframe designs are now a critical issue surrounding efforts to meet the future environmental targets for quieter civil aircraft.This research is principally aimed at understanding and predicting the groundpropagating noise generated by the latter of these two installed jet noise sources. In order to characterise the jet-surface interaction noise source, however, it is first necessary to isolate it. A small 1/50th model-scale acoustic experiment, therefore, is conducted in a semi-anechoic university laboratory using a single stream jet installed beneath a flat plate. Both far-field acoustic and near-field plate surface pressure data are measured to investigate the jet-surface interaction noise source. Results from this fundamental experiment are then used to help drive a larger, and more realistic, 1/10th modelscale test campaign, at QinetiQ's Noise Test Facility, where 3D wing geometry effects, Reynolds number scaling effects and static-to-flight effects are investigated. A jet-flap impingement tonal noise phenomenon is also identified and investigated at particularly closely-coupled jet-wing configurations. Finally, the first version of a fast, semi-empirical engineering tool is developed to predict the additional noise caused by jet-wing interaction noise, under static ambient flow conditions. It is hoped that this tool will serve to inform future commercial aircraft design decisions and, thus, will help to protect the acoustic environment of residents living beneath flight paths
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The influence of identification with a religious group on expressed and inventoried choice of occupation
The relationship of set and the defense of repression to perceptual recognition
Thesis (Ph.D.)--Boston University.The general problem investigated in this research was the relationship of set and the defense of repression to perceptual recognition. A. comparison was made of the perceptual recognition threshold scores and the slope scores af a High Repressor and a Low Repressor group on three series of pictures -- an Aggressive series, a Neutral with a Theme series, and a Neutral without a Theme series.
Three hundred and eighty-six students were administered a sentence-completion test which was used as the defense measure. This test was devised specifically to assess the repression of aggression. On the basis of extreme scores on this test, twenty-four subjects were selected as a High Repressor group and twenty-four subjects as a Low Repressor group. A Medium Repressor group was selected from the scores tbat fell between the High Repressor and the Low Repressor groups. Each member of these groups was individually administered a perceptual recognition task [TRUNCATED
With The Wind And The Rain In Your Hair
Photograph of Ginny Simms in rainhttps://scholarsjunction.msstate.edu/cht-sheet-music/6832/thumbnail.jp
With All My Heart
Photograph of Rudy Valleehttps://scholarsjunction.msstate.edu/cht-sheet-music/6818/thumbnail.jp
Illness perceptions of leprosy-cured individuals in Surinam with residual disfigurements – “I am cured, but still I am ill”
Objective Leprosy has rarely been the subject of health psychology research despite its substantial impact. Our aim was to explore illness perceptions in patients and their health care providers in Surinam. The Common Sense Model (CSM) was the guiding theoretical model. Design Patients with biomedically cured leprosy and their health care providers completed the B-IPQ and took part in semi-structured interviews. The literature on illness perceptions in patients with leprosy was reviewed. Main outcome measures Patients’ B-IPQ scores were compared with samples of patients with other (chronic) illnesses, and with health care providers completing the questionnaire as if they were visibly disfigured patients. Quotations from the semi-structured interviews were used to contextualise the illness perceptions. Results Patients’ B-IPQ scores reflected the chronic nature of leprosy and were comparable with those with other chronic illnesses. Health care providers perceived leprosy to have a greater negative impact than did the patients. Perceived understanding of causes differed considerably between patients and health care providers. Conclusion Leprosy continues to be experienced as an illness with major psychological and social consequences such as stigmatisation, even after biomedical cure. Interventions that target patients, health care providers, and society at large may help reduce perceived shame and stigma. The CSM is a helpful theoretical model in studying this population. </jats:sec
Tangent curves to degenerating hypersurfaces
We study the behaviour of rational curves tangent to a hypersurface under
degenerations of the hypersurface. Working within the framework of logarithmic
Gromov-Witten theory, we extend the degeneration formula to the logarithmically
singular setting, producing a virtual class on the space of maps to the
degenerate fibre. We then employ logarithmic deformation theory to express this
class as an obstruction bundle integral over the moduli space of ordinary
stable maps. This produces new refinements of the logarithmic Gromov-Witten
invariants. In the example of a smooth plane cubic degenerating to the toric
boundary, we employ localisation and tropical techniques to compute these
refinements. Finally, we use our calculations to describe how embedded curves
tangent to a smooth cubic degenerate as the cubic does; the results obtained
are of a classical nature, but the proofs make essential use of logarithmic
Gromov-Witten theory.Comment: 45 pages. Includes ancillary Sage code. Comments welcome! V2: Minor
expositional changes; restored code file erroneously hidden in V
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