1,720,958 research outputs found
Mycological surveys as part of a project on forest ecology and natural environment management at the Forstliche Ausbildungsstätte Pichl (Mürztal, Styria)
Im Rahmen des Projekts „Waldökologie 2019–2021“ wurden in den Jahren 2019 und 2020 in 13 Waldstandorten sowie 3 Sonderstandorten mit einer Gesamtfläche von jeweils rund 1.600 m² die Großpilze kartiert. Die Begehungen fanden 2019 zwischen dem 20. April und dem 16. Oktober bzw. 2020 zwischen dem 5. Mai und dem 19. Oktober statt. Jede Untersuchungsfläche wurde vier- bis fünfmal pro Jahr begangen. Ein Teil der gesammelten Proben wurde bzw. wird in das Herbarium des Universalmuseums Joanneum integriert. Mit den erhobenen Daten wurden für jeden Standort Einzellisten mit Angaben zum Substrat und zur Position des Pilzfundes in der Untersuchungsfläche sowie eine Gesamtliste der festgestellten Pilztaxa erstellt, welche durch die Ergebnisse der seit 1995 stattfindenden Pilzwanderungen unter der Leitung von Harald Kahr und Uwe Kozina ergänzt wurde.Insgesamt wurden im Rahmen des Waldökologie-Projekts 780 Pilztaxa festgestellt, die Gesamtliste für das Forstgut Pichl umfasst 1136 Pilztaxa. In den meisten Untersuchungflächen konnten seltene und bemerkenswerte Pilzarten nachgewiesen werden, die in einem eigenen Teil besprochen werden. So wurden 29 Arten festgestellt, die in der Steiermark bzw. Österreich zumindest als gefährdet eingestuft sind. Statistisch ausgewertet wurden die einzelnen Standorte nach Einzeldaten und Anzahl der Taxa; die zehn am häufigsten kartierten Pilzarten; die Zahl der Taxa, die entweder nur 2019, nur 2020 oder in beiden Jahren festgestellt wurden, inklusive ihrer trophischen Lebensweise; die Gefährdungsgrade der festgestellten Arten; und die Verteilung der gefährdeten Arten auf ihre Substrattaxa bzw. ihre trophische Lebensweise. Durch die statistischen Auswertungen wurde u.a. deutlich, dass zwei Jahre als Untersuchungszeitraum für eine annähernd vollständige Erfassung der Pilzarten nicht ausreichen.Für alle Untersuchungsflächen erfolgte eine Verschneidung der festgestellten Pilzarten mit dem Waldökosystem, den Gehölzarten und den Bodentypen. Jene Gehölze, denen aus mykologischer Sicht im Untersuchungszeitraum eine besondere Bedeutung zukam, werden angeführt.Allgemeine sowie standortbezogene Maßnahmen zur Bewahrung bzw. Förderung der mykologischen Artenvielfalt werden genannt. Grundsätzlich haben sich naturnahe Standorte bzw. Standorte mit einzelnen naturnahen Elementen aus mykologischer Sicht als besonders interessant herausgestellt. Die Erhaltung bzw. Förderung solcher Standorte ist daher von wesentlicher Bedeutung. Als negative Faktoren für die Artenvielfalt sind die Austrocknung der Böden durch Sonneneinstrahlung oder Wind, zunehmender Bewuchs mit krautigen Pflanzen und Gräsern, geringe Vielfalt an Gehölzarten und geringes Totholzaufkommen zu nennen.As part of the „Waldökologie 2019–2021“ project, macrofungi were mapped in the years 2019 and 2020 at 13 forest sites as well as 3 special sites with a total area of around 1,600 m². The field work was carried out between April 20th and October 16th in 2019, and between May 5th and October 19th in 2020. Each site was visited four to five times in each year. A part of the collected samples was or is being integrated into the herbarium of the Universalmuseum Joanneum. Lists containing information on the substrate and the exact position of each fungal record were compiled for each site. A comprehensive list of all observed taxa was also compiled and supplemented with data collected by Harald Kahr and Uwe Kozina during various field trips since 1995.A total of 780 fungal taxa were identified as part of this project. The list containing all fungal taxa known from the Pichl forest estate comprises 1136 fungal taxa. In most of the studied sites, rare and remarkable fungal species were detected, which are discussed in a separate section. 29 species whose protection statuses were classified at least as endangered in Styria and Austria were observed. The individual sites were statistically evaluated according to the following criteria: number of observations and taxa; the ten most commonly observed fungal species; the number of taxa detected in either 2019 only, 2020 only, or in both years, including their trophic lifestyle; the conservation statuses of the identified species; and the distribution of endangered species according to their host taxa and their trophic lifestyle. The statistical evaluations made it clear, among other things, that a sample period of two years is not nearly long enough for a complete recording of all fungal species.For all sites, the observed fungal species were intersected with the forest ecosystems, woody plant species and soil types. The woody plants that were of particular importance from a mycological perspective during the study period are listed.General as well as site-specific measures to preserve or promote mycological biodiversity are provided. In principle, semi-natural locations or locations with individual natural elements have proven to be particularly interesting from a mycological point of view. The preservation or promotion of such locations is therefore considered to be essential. Negative factors for biodiversity include desiccation of the soil due to direct sunlight or wind, increasing growth of herbaceous plants and grasses, low diversity of woody plant species and low amounts of dead wood.Gernot Friebes, BScMasterarbeit Universität Graz 202
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
“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
We 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
We 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
We 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.
Author-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
In 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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