1,720,956 research outputs found
Landscape evolution of the Alps : a review of the State of Knowledge and new results from morphometric analysis
No full textDie Europäischen Alpen sind einer der bekanntesten Gebirgszüge der Welt. Obwohl die Alpen eines der am besten untersuchten Orogene sind, ist erstaunlich wenig über die genaue Entstehung der dort anzufindenden Landschaften oder das Alter der Topografie bekannt. Diese Arbeit fasst den aktuellen Wissenstand über die Topografie, Hebungsgeschichte und Landschaftsentwicklung der Alpen zusammen. Unterschiedliche Techniken und Herangehensweisen werden präsentiert um diese Aspekte aufzuzeigen und zu datieren. (i) Morphometrische Analysen zeigen, dass große Flüsse im Maßstab der Alpen nicht einheitlich equilibriert sind und, dass die Alpen durch eine Reduzierung der Hangneigung mit steigender Höhe charakterisiert sind, ohne systematische Unterschiede zwischen Ost- und Westalpen. (ii) Der Sedimenttransport in die umliegenden Becken begann um 35 Ma und verzeichnet einen starken Anstieg seit dem Pliozän. (iii) Thermochronometrische Daten zeigen eine starke Beschleunigung der Exhumation seit dem Pleistozän. (iv) Oberflächendatierungen mittels 10Be und 26Al signalisieren eine junge Einschneidungsgeschichte über die letzten 4 bis 5 Millionen Jahre. Durch die Zusammenführung dieser unterschiedlen Datensätze in ein Modell für die geologische Hebungsgeschichte ergibt sich, dass die topografische Entwicklung der Alpen über die letzten 45 Millionen Jahre langsam von statten ging und ab 5 Ma rapide beschleunigte. Weder tektonische noch klimatische Faktoren können alleine für die junge Hebung verantwortlich sein, sondern eine Kombination aus beiden. In den Westalpen werden beispielsweise rund 50 % der Oberflächenhebung der klimatisch ausgelösten Erosion zugeschrieben, wohingegen in den Ostalpen das häufige Vorkommen von Reliktlandschaften in großer Höhe auf einen tektonischen Auslöser in der Tiefe mit großer Wellenlänge schließen lassen.The European Alps are one of the most famous mountain ranges on Earth. Being one of the best studied orogens in the world, surprisingly little is known about the exact formation of its landscapes or the age of its topography. This thesis summarizes the state of knowledge on topography, uplift history and landscape formation of the range. Different approaches and techniques are used to showcase and date these aspects. For example, (i) morphometric analysis show disequilibrium features of major drainages and that the Alps are characterized by decreasing slopes at high elevations with no difference between Eastern and Western Alps. (ii) Sediment fluxes to the surrounding basins started about 35 Ma and show a substantial increase since the Pliocene. (iii) Thermochronometric data yield strongly accelerated exhumation since the Pleistocene. (iv) Surface dating via 10Be and 26Al records a young incision history for the last 4 to 5 Myr. Integrating these different datasets into a model for the geological uplift history shows that topographic evolution for the last 45 Ma was happening rather slowly until about 5 Ma and accelerated thereafter. Neither tectonics nor climate can be made responsible to be the sole reason for the young uplift, but rather a combination of both. For example, for the Western Alps some 50 % of the surface uplift may be attributed to climatic driven erosion in the Pliocene. Conversely, in the Eastern Alps, abundant relict landscapes at high elevations indicate a long wavelength tectonic driver at depth.verfasst von Gerit Albert GradwohlZusammenfassungen in Deutsch und EnglischMasterarbeit Karl-Franzens-Universität Graz 2020 840
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
- …
