1,720,954 research outputs found
Multitemporal analysis of tropical cyclone impacts on the iSimangaliso Wetland Park sea turtle nesting beach using geospatial technologies.
Get PDFMasters Degree. University of KwaZulu-Natal, Durban.Increase in the intensity and frequency of tropical cyclones due to changing climatic conditions, poses a threat to sea turtle nesting beaches. In general, tropical cyclones increase the rate of coastal erosion along sandy beaches, potentially disrupting Sea turtle nesting when tropical cyclone seasons coincide with Sea turtle nesting seasons. The iSimangaliso Wetland Park Sea turtle nesting beach is situated along the coast in north-eastern KwaZulu-Natal, South Africa. Its unique location adjacent to the southwest Indian Ocean means that it experiences seasonal flooding due to tropical cyclones. Nevertheless, the impact of these tropical cyclones on the iSimangaliso Wetland Park sea turtle nesting beach remains uncertain. There is, therefore, a need to examine the intensity and frequency of tropical cyclones in this Ocean basin in order to understand their potential impact on the adjacent sea turtle nesting beaches. In this study, tropical cyclone Track Archive data was downloaded from the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Centre for the years 1980 to 2020. Space-time pattern mining tools were then used to analyse the tropical cyclone data in ArcGIS 10.6. Medium resolution multi-spectral Landsat 7 and 8 satellite images were also collected from the USGS and were used in the Digital Shoreline Analysis System to calculate tropical cyclone induced changes in the position of the shoreline along the iSimangaliso Wetland Park sea turtle nesting beach. The results indicate that: (1) the intensity of tropical cyclones within 1000 km off the coast of the iSimangaliso Wetland Park sea turtle nesting beach have increased by 13.80% from 1980 to 2020. (2) Between the year 1980 and 2020 the frequency of tropical cyclones exhibited a spatiotemporal trend that is not statistically significant (z = 0.56 and p = 0.58 (>.05), suggesting that there is no noticeable increase or decrease in the frequency of tropical cyclones within 1000 km off the coast of the iSimangaliso Wetland Park sea turtle nesting beach despite rising sea surface temperatures. (3) The iSimangaliso Wetland Park sea turtle nesting beach is situated along an oscillating tropical cyclone Cold Spot, suggesting that tropical cyclones rarely reach the study area and generally dissipate further north towards southern Mozambique. (4) From 1999 to 2020, the iSimangaliso Wetland Park sea turtle nesting beach has experienced an average seaward shoreline movement by 68.73 m, averaging 0.76 m/year despite the increase in the intensity of tropical cyclones. (5) The results of this study suggest that the frequency of tropical cyclones have a significantly negative relationship (p < 0.01; r2 = -0.69) with the rate of shoreline movement along the iSimangaliso Wetland Park sea turtle nesting beach. (6) The intensity of tropical cyclone has a
moderate correlation (p < 0.076, r2 = 0.39) with the rate of shoreline change along the iSimangaliso Wetland Park sea turtle nesting beach. (7) Distance of tropical cyclones to the study area has a very low negative relationship with the rate of shoreline change (p < 0.2, r2 = -0.2). Generally, these results suggest that unlike other sea turtle nesting beaches, the iSimangaliso Wetland Park sea turtle nesting beach is relatively safe from tropical cyclones activity despite the rapid increase in sea surface temperatures. The impact of tropical cyclones on the study area is attenuated by the presence of steep dunes, coastal vegetation, mangroves, and flood induced sediment deposition from the Mfolozi River and the St. Lucia estuary. A limitation to this study was inaccessibility to high spatial resolution satellite images due to cost. As a result, Landsat images with a medium spatial resolution of 30 m were used as these are freely available. Future research should consider the use of higher resolution satellite or drone and lidar images to study shoreline changes in relation to tropical cyclone activity and possible sea-level rise along the iSimangaliso Wetland Park sea turtle nesting beach.Author's publications are listed on page vi
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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