1,720,955 research outputs found
Caracterización Molecular y Análisis de Crecimiento en Accesiones de Ají Dulce (Capsicum Sp.)
No full textLa alta variabilidad genética existente en ají dulce hace necesaria la obtención de un material homogéneo, tanto agronómico como culinario, es por ello que es imprescindible la caracterización molecular, así como el análisis de crecimiento con la finalidad de aportar información útil dentro de los programas de mejoramiento genético. Por tal motivo, el análisis molecular se realizó en 12 accesiones de ají dulce provenientes de Banco de Germoplasma del INIA–CENIAP en el Laboratorio de Genética Molecular (CIBA) de la Facultad de Agronomía (UCV), y 19 marcadores de tipo RAPD. El análisis de crecimiento se realizó en tres accesiones de la colección del Banco de Germoplasma de acuerdo a su lugar de procedencia, bajo condiciones de invernadero con un diseño completamente al azar. Se observó la mejor resolución en sus productos de amplificación en OPA-02, OPE-03 y OPE-04, siendo OPE-03 el que aportó mayor información y permitió evaluar la variabilidad y el polimorfismo genético entre las accesiones, además en el dendrograma y el análisis de componentes principales se observó la formación de dos grupos discriminantes de las accesiones, asociados posiblemente con la presencia/ausencia de pungencia. Las accesiones OSP-HOR-10-988 y OSP-HOR-12-1048 fueron las mejores en acumulación de biomasa seca total. OSP-HOR-14-726 fue la mejor para la variable altura de planta, y para diámetro de tallo, las mejores fueron OSP-HOR-14-726 y OSP-HOR-12-1048, mientras que para la variable índice de clorofila (SPAD), OSP-HOR-14-726 y OSP-HOR-10-988 mostraron los mejores resultados. Para las variables de rendimiento, OSP-HOR-10-988 mostró la mayor longitud de frutos y acumulación de biomasa fresca en frutos, y para el diámetro de frutos, OSP-HOR-14-726 y OSP-HOR-10-988 mostraron los mejores valores, y OSP-HOR-14-726 fue la que presentó el mayor peso de 100 semillas. El uso de los índices de crecimiento (ICR, IAN, RAF, RPF, AFE) evidenció que hay diferencias entre las tres accesiones de ají dulce. Las principales variables morfofisiológicas con la mayor capacidad de expresar la variabilidad, fueron: área foliar y número de hojas promedio, las cuales permitieron la separación de OSP-HOR-10-988. Además, el mejor rendimiento se presentó en OSP-HOR-14-726, y la más eficiente en acumulación de biomasa seca total fue OSP-HOR-12-1048. The high genetic variability existing in sweet pepper makes it necessary to obtain a homogeneous material, both agronomic and culinary, which is why molecular characterization is essential, as well as growth analysis in order to provide useful information within plant breeding programs. For this reason, the molecular analysis was carried out on 12 sweet pepper accessions from the INIA–CENIAP Germplasm Bank at the Molecular Genetics Laboratory (CIBA) of the Faculty of Agronomy (UCV), and 19 RAPD-type markers. The growth analysis was carried out in three accessions from the Germplasm Bank collection according to their place of origin, under greenhouse conditions with a completely randomized design. The best resolution in their amplification products was observed in OPA-02, OPE-03 and OPE-04, being OPE-03 the one that provided the most information and allowed to evaluate the variability and genetic polymorphism between the accessions, in addition, in the dendrogram and the principal component analysis, the formation of two discriminating groups of the accessions was observed, possibly associated with the presence/absence of pungency. The accessions OSP-HOR-10-988 and OSP-HOR-12-1048 were the best in total dry biomass accumulation. OSP-HOR-14-726 was the best for the plant height variable, and for stem diameter, the best were OSP-HOR-14-726 and OSP-HOR-12-1048, while for the chlorophyll index variable (SPAD), OSP-HOR-14-726 and OSP-HOR-10-988 showed the best results. For the yield variables, OSP-HOR-10-988 showed the greatest fruit length and fresh biomass accumulation in fruits, and for fruit diameter, OSP-HOR-14-726 and OSP-HOR-10-988 showed the best values, and OSP-HOR-14-726 was the one with the highest weight of 100 seeds. The use of growth indices (ICR, IAN, RAF, RPF, AFE) showed that there are differences between the three sweet pepper accessions. The main morphophysiological variables with the greatest capacity to express variability were: leaf area and average number of leaves, which allowed the separation of OSP-HOR-10-988. In addition, the best yield was presented in OSP-HOR-14-726, and the most efficient in total dry biomass accumulation was OSP-HOR-12-1048.Trabajo de grado presentado como Requisito Final para optar al título de Magister Scientiarum en
Agronomía en la Orientación Protección Vegetal.
Noviembre 2023
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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