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Identificación y cuantificación de dípteros (Ceratopogonidae) polinizadores de cacao (Theobroma cacao L.) en la Granja Luker (Palestina, Caldas) a través de la utilización de materia orgánica en descomposición
Get PDFEl cacao, fruto del árbol Theobroma cacao, representa un sustento para muchas familias en Colombia. Para su obtención es necesaria la polinización ya sea manual o entomófila. Esta última es realizada por dípteros perteneciente a la familia Ceratopogonidae, géneros Forcipomyia, Dashyelea y Atrichopogon, siendo Forcipomyia el más efectivo. No obstante, la abundancia de ceratopogónidos es baja en muchos cultivos pues se remueve la hojarasca (su hábitat) y la ausencia de polinizadores suele ser un factor limitante en la producción. En Colombia la información en esta área del conocimiento es muy reducida y poco reciente. En este sentido lo que se busca es evaluar la abundancia de ceratopogónidos en cuatro tratamientos: control, pseudotallos de banano, estiércol de equino y por último estiércol de equino y pseudotallos de banano, con el fin de determinar cual de estos alberga la mayor cantidad de ceratopogónidos.
Forcipomyia fue el género más abundante en el presente estudio, asimismo, se encontraron los otros dos géneros polinizadores, en menor cantidad. Se realizó un MLG para determinar si los diferentes tratamientos y SAF en los que se trabajó, se relacionan estadísticamente con el número de individuos encontrado. Se encontró mayor abundancia en el tratamiento con pseudotallos de banano, seguido del tratamiento control, posteriormente el tratamiento con estiércol y pseudotallos de banano y, por último, el tratamiento con estiércol. Adicionalmente en el SAF 12, se encontró mayor abundancia de Ceratopogonidae lo cual puede ser explicado por el sombrío en este lote. Gracias a este estudio se puedo reconocer que utilizando el banano se puede aumentar el número de Ceratopogonidae en una plantación comercial de cacao en Colombia y se puede recomendar el uso de éste en otros cultivos. Sin embargo, es importante realizar un estudio de eficacia de polinización para determinar si el género más abundante en este caso es el polinizador efectivo.Casa LukerCocoa, Theobroma cacao’s fruit, represent livelihood for many Colombian families. The pollination (entomophilous or manual) is required for the obtention of the fruit. The entomophilous pollination its carried out by dipteran belonging to the Ceratopogonidae family and the genera Forcipomyia, Dashyelea and Atrichopogon. Among them, Forcipomyia is the most effective. However, the abundance of ceratopogonids is low in many crops due to leaf litter removal (their habitat) and the absence of pollinators tend to be a limiting factor in crop production. In Colombia the information in this area is very unknown and old. The aim of this project was to test the abundance of ceratopogonids in four different treatments: control, banana pseudostems, horse manure and banana pseudostems and horse manure together, in order to determine wich of this treatments has the largest amount of ceratopogonids.
Forcipomyia was the most abundant genus in the present study, the other two pollinator genera were also present,but in lower quantity. A GLM was carried out to determine if the treatments and SAF (agroforestry system), are statistically related with the individuals numbers. The greatest abundance was found in the pseudostem treatment, then the control treatment, afterwards the horse manure and pseudostems and lastly the horse manure treatment. In addition, in the SAF 12, a greater abundance was found this result could be related to the somber in this area. Due to this study we could conclude that the utilisation of banana pseudostems in Cacao crops, could increase the Ceratopogonidae population. However, efficacy of pollination studies are important to determine whether the most abundant genus is the effective pollinator.Biólogo (a)Pregrad
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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