1,355,166 research outputs found
The Control of Casha (Acacia spp) on Native Pasture
No full textNative pastures, dominated by guineagrass (Panicum maximums and leucaena tLeucaena leucocephalai, provide the basic feed resource for the ruminant livestock industry in the Virgin Islands. However, many of these pastures are in advanced stages ofdeterioration because of overgrazing. There are currently no standard recommendations to prevent the continued ingress of malevolent plants such as ca~ha (Acacia spp.). A split plot field trial was set up to test the efficacy of mechanical and/or chemical treatments for the control of casha. Main plots, replicated three times, consisted of mechanical shredding vs. non-shredded mature plants. These treatments were applied in May, 1990. Subplots were 6 chemical foliar sprays: 2.0 and 3.0 kglha of dicamba alone; 1.28 and 2.56 kg/ha ofTrimecR Super Brush Killer (1:4:4 dicamba, 2,4-0 and 2,4-DP); 285 Llha of diesel oil; and a herbicide check. Subplot treatments were applied 12 wk after mechanical treatments to allow for sufficient regrowth on shredded plots. Chemical application was repeated 24 wk after the first application. Plant density of casha and frequency of canopy occurrence of all dominant plant species were taken initially in May, 1990, and again after 36 wk (just before second herbicide application) and 84 wk. Shreddin-e .i.lene prevented the 14% increase (P<0.05) in the initial ~ casha plant density (1.3 plants/m" ) that was observed on the nonshredded herbicide check, but did not kill any existing casha plant over the 84-wk period. However, shredding plus regrowth combined with dicarnba or Trimel,;R application synergistically induced greater (P <0.0 I) casha mortality (68 '7c) than similar herbicide-treated mature non-shredded plots (48% mortality). A significant leaf drop and canopy reduction (62 7~) followed the first application of diesel oil on shredded plus regrowth treatment but there was no long term topkill (4%) of existing cash a plants. The higher rates of both herbicides provided the best control of casha. Approximately 80% casha mortality was obtained by the initial application of 3.0 kg/ha of dicamba or by double application of 2.56 kg/ha of TrimecR to the shredded plus regrowth treatment without any deleterious effect on the associated leucaena or guineagrass. These data signify that mechanical shredding could be integrated with available herbicides for satisfactory control of casha on native pasture
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
Variations on the Author
No full text“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
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
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Análisis fitoquímico y toxicológico de la Casha-marucha Xanthium catharticum H.B.K.
No full textTrabajo concerniente a la Casha-Marucha [Xanthium catharticum H. B. K.] que investiga las caracterÍsticas taxonómicas y fisicoquímicas. Demuestra la presencia de grupos de principios activos medicinales mediante tamizaje fitoquímico y determinación de DL50 toxicológico por bioensayo de Artemia Salina. Siendo los grupos de principios medicinales encontrados: Alcaloides triterpenos y esteroides, fenoles y tanios, principios amargos, aminoácidos, resinas, antocianidinas. En la determinación del DL50 se determinó una bioactividad baja en el extracto acuoso mientras que en el alcohólico una bioactividad alta.Doctor en Bioquímica y FarmaciaCuenc
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
DISEÑO DE UN CONCENTRADOR SOLAR PARA DESINFECCIÓN DE AGUA PARA CONSUMO HUMANO EN EL C.P. DE CASHA, DISTRITO SANTA MARÍA DEL VALLE, HUÁNUCO 2019
No full textEl presente estudio tiene como objetivo evaluar la efectividad del concentrador solar para desinfección del agua para consumo humano en el C.P. de Casha, Distrito Santa María del Valle, Huánuco 2019.
Siendo una investigación de tipo aplicada, experimental, longitudinal y analítica con un enfoque cuantitativo, la población está conformado por las viviendas del sector del C.P. de Casha del Distrito de Santa María del Valle haciendo un total de 15; La contrastación de la hipótesis fue mediante la prueba de t de student, apoyándonos en el SPSS V23.
Se obtuvo como resultados que los parámetros microbiológicos de las 15 muestras obtenidas antes de la intervención del concentrador solar en las cuales se observaron coliformes totales, coliformes termotolerantes y bacterias heterotróficas siendo indicadores de contaminación fecal lo cual no es apto para consumo humano ya que generan enfermedades diarreicas. Dada esta situación se decide diseñar un concentrador solar para lograr agua apta para consumo humano, siendo este fundamental para la vida del ser humano. Posteriormente aplicado el concentrador solar en el C.P de Casha; teniendo en cuenta la temperatura ambiente, termosifón y destilador solar se obtienen resultados microbiológicos negativos siendo cero.
Llegando a la conclusión que al analizar los parámetros de los coliformes totales se evidencio que existe un error típico de 1,155 con un valor significativo [t=3,464, p= 0,004], con lo que se rechaza a hipótesis nula dando lugar que el uso del concentrador solar fue efectivo para la eliminación de microorganismos logrando agua apta para consumo humano. Del mismo modo con los parámetros de los coliformes termotolerantes con error típico de 1,195 y valor significativo [t=5,464, p= 0,009], finalmente los parámetros de las bacterias heterotróficas se evidencio que existe un error típico de 1,104 con un valor significativo [t=5,196, p= 0,000]; de esa forma se estable que el concentrador solar fue efectivo para el tratamiento de la parte microbiológica del agua para consumo humano.Tesi
The Thursday Murder Club: Launching a megabrand author - a publishing case study
No full textIn 2020, the Christmas book charts in the UK made headlines: Barack Obama’s eagerly awaited autobiography, The Promised Land, was beaten to the top spot by The Thursday Murder Club by Richard Osman, a debut cosy crime novel set in a retirement village. Not only did Osman’s book beat the former US president’s expected bestseller, it also broke records, becoming the fastest-selling debut crime novel of all time. Although Osman has a certain level of fame in the UK from his TV appearances on shows such as Pointless, his celebrity status does not entirely explain the novel’s huge sales. This article tracks the acquisition, publication, and promotion journey of The Thursday Murder Club in order to understand the industry and cultural context of its success and to interrogate the role of celebrity in the creation of author brands. The findings suggest that the unexpected scale of the success of the book owed to a number of factors, including in-depth editing by the novel’s agent, editor, and author to tighten up the plot, an extensive and strategic promotional campaign, the pandemic (which drove interest in the book’s genre and themes), and the quality of the writing. We find that the book’s success was accentuated by Osman’s celebrity status rather than being entirely reliant on it. This research adds to the growing scholarship on celebrity authorship by means of an in-depth case study and provides insight into the processes behind publishing a ‘celebrity’ book and launching a megabrand author
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
- …
