122,445 research outputs found
A conceptual model and rapid appraisal tool for integrated coastal floodplain assessments
No full textLow-lying coastal zones are high-risk areas threatened by flooding due to extreme coastal events and rising sea-levels. The coastal floodplain system includes elements such as near-shore waves and water levels, inter-tidal beaches and coastal habitats, natural and artificial sea defences and multiple inland floodplain features. Flood risk studies generally achieve an integrated assessment of these elements using multiple numerical models for different floodplain elements. However fundamental choices of floodplain description and the appropriate data, methods and models can vary widely between different sites and flood risk studies. A comprehensive conceptual model is needed to describe the floodplain system and help inform these choices in each site. However a descriptive conceptual model for coastal floodplain systems does not exist at present. There is a bias in flood risk studies towards the direct use of numerical models with limited use of conceptual models – existing models are implicit and do not describe the coastal floodplain system.This thesis addresses this gap by developing, applying and testing a rapid appraisal tool that conceptually describes the coastal floodplain as a system of interacting elements. The tool is developed in two parts – i) a quasi-2D Source– Pathway – Receptor (SPR) model that provides a comprehensive qualitative description of the floodplain; and ii) a Bayesian network model that uses this description to quantify individual elements as sources, pathways and receptors of flood propagation. The quasi-2D SPR is applied in 8 diverse coastal zones across Europe 4 of which include nested case-studies. It is an effective way of gathering and describing information about the floodplain from stakeholders across multiple disciplines. The Bayesian network model is applied to two contrasting floodplain systems in England – Teignmouth and Portsmouth. The network model is effective in pinpointing critical flood pathways and identifying key knowledge gaps for further analyses. The two models together provide a comprehensive understanding of the coastal floodplain system that can be used to inform and target the use of more detailed numerical models.Hence this thesis provides a conceptual model and tool to improve flood risk assessment. It makes conceptual understanding of the floodplain explicit and stratifies quantitative analysis by application of a rapid assessment tool before the use of detailed numerical models
Transforming health professionals' education
No full textBozorgmehr K, Narayan L, Radhakrishna R. Transforming health professionals' education. The Lancet. 2011;377(9773): 1237
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Creativity/Anthropology
No full textCreativity and play erupt in the most solemn of everyday worlds as individuals reshape traditional forms in the light of changing historical circumstances. In this lively volume, fourteen distinguished anthropologists explore the life of creativity in social life across the globe and within the study of ethnography itself. Contributors include Barbara A. Babcock, Edward M. Bruner, James W. Fernandez, Don Handelman, Smadar Lavie, José E. Limon, Barbara Myerhoff, Kirin Narayan, Renato Rosaldo, Richard Schechner, Edward L. Schieffelin, Marjorie Shostak, Anna Lowenhaupt Tsing, and Edith Turner
An Orthogonality Property of the Legendre Polynomials
No full textWe show that the Legendre polynomials have another orthogonality property
Creativity/Anthropology
No full textCreativity and play erupt in the most solemn of everyday worlds as individuals reshape traditional forms in the light of changing historical circumstances. In this lively volume, fourteen distinguished anthropologists explore the life of creativity in social life across the globe and within the study of ethnography itself. Contributors include Barbara A. Babcock, Edward M. Bruner, James W. Fernandez, Don Handelman, Smadar Lavie, José E. Limon, Barbara Myerhoff, Kirin Narayan, Renato Rosaldo, Richard Schechner, Edward L. Schieffelin, Marjorie Shostak, Anna Lowenhaupt Tsing, and Edith Turner
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
PICALM Rescues Endocytic Defects Caused by the Alzheimer's Disease Risk Factor APOE4
No full textAPOE4 is the strongest genetic risk factor for late-onset Alzheimer's disease (AD). Narayan and Sienski et al. find that APOE4 disrupts early endocytosis, a process by which cells take up external material. By increasing the levels of another AD risk factor, PICALM, the authors are able to reverse these disruptions
Letter from unknown writer to Jesse L. Boyce
No full textLetter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
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