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Building vulnerability to hydro-geomorphic hazards : estimating damage probability from qualitative vulnerability assessment using logistic regression
No full textThe focus of this study is an analysis of building vulnerability through investigating impacts from the 8 February 2013 flash flood event along the Avenida Venezuela channel in the city of Arequipa, Peru. On this day, 124.5 mm of rain fell within 3 h (monthly mean: 29.3 mm) triggering a flash flood that inundated at least 0.4 km² of urban settlements along the channel, affecting more than 280 buildings, 23 of a total of 53 bridges (pedestrian, vehicle and railway), and leading to the partial collapse of sections of the main road, paralyzing central parts of the city for more than one week. This study assesses the aspects of building design and site specific environmental characteristics that render a building vulnerable by considering the example of a flash flood event in February 2013. A statistical methodology is developed that enables estimation of damage probability for buildings. The applied method uses observed inundation height as a hazard proxy in areas where more detailed hydrodynamic modeling data is not available. Building design and site-specific environmental conditions determine the physical vulnerability. The mathematical approach considers both physical vulnerability and hazard related parameters and helps to reduce uncertainty in the determination of descriptive parameters, parameter interdependency and respective contributions to damage. This study aims to (1) enable the estimation of damage probability for a certain hazard intensity, and (2) obtain data to visualize variations in damage susceptibility for buildings in flood prone areas. Data collection is based on a post-flood event field survey and the analysis of high (sub-metric) spatial resolution images (Pléiades 2012, 2013). An inventory of 30 city blocks was collated in a GIS database in order to estimate the physical vulnerability of buildings. As many as 1103 buildings were surveyed along the affected drainage and 898 buildings were included in the statistical analysis. Univariate and bivariate analyses were applied to better characterize each vulnerability parameter. Multiple corresponding analyses revealed strong relationships between the "Distance to channel or bridges", "Structural building type", "Building footprint" and the observed damage. Logistic regression enabled quantification of the contribution of each explanatory parameter to potential damage, and determination of the significant parameters that express the damage susceptibility of a building. The model was applied 200 times on different calibration and validation data sets in order to examine performance. Results show that 90% of these tests have a success rate of more than 67%. Probabilities (at building scale) of experiencing different damage levels during a future event similar to the 8 February 2013 flash flood are the major outcomes of this study.19 page(s
Percutaneous coronary intervention versus bypass grafting in left main coronary artery disease [editorial]
No full text3 page(s
Testing the importance of the Medial Temporal Lobes in human interoception : does it matter if there is a memory component to the task?
No full textInteroception is the ability to consciously perceive internal bodily states. Neuroimaging suggests that the insula (IC) and anterior cingulate cortex (ACC) mediate interoception, while studies involving patients/animals with brain lesions suggest the medial temporal lobe (MTL) is particularly important. One reason for these contrasting conclusions may lie in the types of interoceptive task used by these different approaches. Some tasks probably require integration of current physiological state with mnemonic information (e.g., how much one last ate), and these may be especially reliant upon MTL processing. We compared one task that probably requires integration - a water load task - with one that likely does not - a heart-rate tracking task - in two individuals with selective MTL damage (and with intact IC and ACC). A group of matched healthy individuals served as controls. The main finding was that individuals with MTL damage, relative to controls, were equally and significantly impaired on both types of interoception task. This suggests that MTL structures are involved in mediating interoception even when using a task (heart rate tracking) that does not seemingly require memory and that in neuroimaging studies activates the IC and ACC. The reasons for this apparent inconsistency with neuroimaging findings and the functional role of the MTL in interoception are discussed.9 page(s
Reducing decisional conflict and enhancing satisfaction with information among women considering breast reconstruction following mastectomy : results from the BRECONDA randomized controlled trial
No full textBackground: Deciding whether or not to have breast reconstruction following breast cancer diagnosis is a complex decision process. This randomized controlled trial assessed the impact of an online decision aid [Breast RECONstruction Decision Aid (BRECONDA)] on breast reconstruction decision-making. Methods: Women (n = 222) diagnosed with breast cancer or ductal carcinoma in situ, and eligible for reconstruction following mastectomy, completed an online baseline questionnaire. They were then assigned randomly to receive either standard online information about breast reconstruction (control) or standard information plus access to BRECONDA (intervention). Participants then completed questionnaires at 1 and 6 months after randomization. The primary outcome was participants' decisional conflict 1 month after exposure to the intervention. Secondary outcomes included decisional conflict at 6 months, satisfaction with information at 1 and 6 months, and 6-month decisional regret. Results: Linear mixed-model analyses revealed that 1-month decisional conflict was significantly lower in the intervention group (27.18) compared with the control group (35.5). This difference was also sustained at the 6-month follow-up. Intervention participants reported greater satisfaction with information at 1- and 6-month follow-up, and there was a nonsignificant trend for lower decisional regret in the intervention group at 6-month follow-up. Intervention participants' ratings for BRECONDA demonstrated high user acceptability and overall satisfaction. Conclusions: Women who accessed BRECONDA benefited by experiencing significantly less decisional conflict and being more satisfied with information regarding the reconstruction decisional process than women receiving standard care alone. These findings support the efficacy of BRECONDA in helping women to arrive at their breast reconstruction decision.11 page(s
Social, historical and cultural dimensions of tuberculosis
No full textTuberculosis (TB) researchers and clinicians, by virtue of the social disease they study, are drawn into an engagement with ways of understanding illness that extend beyond the strictly biomedical model. Primers on social science concepts directly relevant to TB, however, are lacking. The particularities of TB disease mean that certain social science concepts are more relevant than others. Concepts such as structural violence can seem complicated and off-putting. Other concepts, such as gender, can seem so familiar that they are left relatively unexplored. An intimate familiarity with the social dimensions of disease is valuable, particularly for infectious diseases, because the social model is an important complement to the biomedical model. This review article offers an important introduction to a selection of concepts directly relevant to TB from health sociology, medical anthropology and social cognitive theory. The article has pedagogical utility and also serves as a useful refresher for those researchers already engaged in this genre of work. The conceptual tools of health sociology, medical anthropology and social cognitive theory offer insightful ways to examine the social, historical and cultural dimensions of public health. By recognizing cultural experience as a central force shaping human interactions with the world, TB researchers and clinicians develop a more nuanced consideration of how health, illness and medical treatment are understood, interpreted and confronted.27 page(s
Adverse orienting effects on visual working memory encoding and maintenance
No full textVisual working memory (VWM) representations can be strengthened by pre-cues presented before, and retro-cues presented after, the memory display, providing evidence that attentional orienting plays a role in memory encoding and maintenance. It is unknown whether attentional orienting to VWM stimuli can also have adverse effects (known as inhibition of return; IOR), as has been found for perceptual-cueing tasks. If so, this would provide further evidence for common attentional orienting mechanisms for mnemonic and perceptual representations. In Experiment 1, we used pre-cueing and demonstrated an increased encoding probability, but not precision, at short SOAs, but probability decreased at long SOAs, reminiscent of the classic IOR findings. In Experiment 2, we used retro-cueing and showed that it improved memory performance, unless attention was cued back to the center of the display by a second cue. In this case, the deleterious effects were on precision, indicating that the item was still retained, but its quality of representation suffered. Together, these results provide further evidence for universal spatial attentional mechanisms operating on perceptual as well as mnemonic representations.7 page(s
Scattering from structures with acute, obtuse and reflex corners
No full textA numerical study of the scattering of an acoustic plane wave by an infinite cylindrical structure with a corner with Dirichlet boundary condition is reported. An integral equation formulation is employed for which rapidly convergent quadrature schemes are developed. The effectiveness of the scheme for a variety of interior angles of the corner: acute, obtuse and reflex, is discussed.4 page(s
Dissolving the puzzle of resultant moral luck
No full textThe puzzle of resultant moral luck arises when we are disposed to think that an agent who caused a harm deserves to be blamed more than an otherwise identical agent who did not. One popular (but controversial) perspective on resultant moral luck explains our dispositions to produce different judgments with regard to the agents who feature in these cases as a product not of what they genuinely deserve but of our epistemic situation. On this account, there is no genuine resultant moral luck; there is only luck in what evidence becomes available to observers. In this paper, I develop an evolutionary account of our inclination to take the results of actions as evidence for the mental states of agents, thereby explaining why the resulting intuitions are recalcitrant to correction. The account explains why the puzzle of resultant moral luck arises: because our disposition to take the harms agents cause as evidence of their mental states can produce intuitions which conflict with those that arise when we examine agents' mental states without reference to the results of their actions. The account also helps to solve the puzzle of resultant moral luck, by providing a strong reason to ignore the intuitions caused by our disposition to regard actual harms as evidence of mental states. Since these intuitions arise using an unreliable proxy for agents' mental states, they ought to be trumped by more reliable evidence.13 page(s
Beyond the bush ballad: authenticity in Australian country music
No full textTheoretical thesis.Bibliography: pages 287-307.Part One. Contexts -- Part Two. People and relationships -- Part Three. Places and spaces -- Part Four. Performance -- Part Five. A coda and conclusions.This thesis is an ethnography of Australian country music. It explores the experiences of individuals active within Australian country music. It acknowledges that country music is a musical project, but takes as its object of study the cultural experience it offers artists, industry personnel and fans. It explores the practices of those involved with Australian country music, the everyday, on-the-ground activities associated with making music, such as performing, promotion, touring, recording, and how these are connected to, shaped by and shape attitudes, beliefs, discourses and stories that circulate within the community. This thesis steps away from a focus on the recorded sound of country music, instead finding that discourses relating to people, relationships, place, space and performance shape the experience and practices of country music culture.The conceptual framework of this thesis is drawn from Pierre Bourdieu’s work on “fields” as a way of understanding Australian country music as a discrete, relatively autonomous social microcosm. A series of distinctions shape the cultural logic of the field and it is through these distinctions that participants determine what is valued as authentic and legitimate. It is through these distinctions that artists work to position themselves and gain legitimacy. Throughout this thesis I will explore four interrelated distinctions: “country” versus “city”, “tradition” versus “new”, “independent” versus “commercial” and “real” versus “fake”. Each of these sets of distinctions relates to aspects of performance and practice and is tied to different discourses that circulate within the field. These distinctions provide meaning and value within the field and are used to inscribe authenticity to certain expressions of country music over others.Mode of access: World wide web1 online resource (329 pages) colour portraits, map