1,721,098 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Quality of mangoes (Mangifera indica) : a study of the pre- and post-harvest continuum through experimental analysis and modelling
No full textCette thèse s’inscrit dans le cadre d’un projet initié au CIRAD en 2000 (Lechaudel et al. 2004, Nodey et al. 2014) pour l’amélioration de la qualité des mangues Cogshall produites à la Réunion. Cette étude a été construite autour de l’analyse des pratiques agronomiques et de conservations sur la qualité de la mangue tout au long du continuum entre le pré et le post-récolte afin d’identifier des leviers d’amélioration de la qualité des mangues Cogshall. Trois approches complémentaires ont été réalisées lors de ce travail. La première approche a été une étude expérimentale centrée autour de l’évolution de la qualité des fruits en fonction des pratiques agronomiques (rapport feuilles/fruits), des dates de récolte et des conditions de conservation (température et temps de conservation). La qualité a été évaluée en utilisant des indicateurs de maturité (respiration et émissions d’éthylène), de qualité physique (poids frais, poids sec, couleur, etc.) et de qualité gustative (concentrations des sucres, acidité, etc.). Les résultats ont montré l’importance de la relation source-puits entre le fruit et le rameau sur la croissance. De plus, la qualité à la récolte détermine en grande partie la qualité potentielle des fruits en conservation. La récolte induit la maturation de tous les fruits récoltés. Les pratiques de conservation sont alors utilisées pour contrôler et optimiser cette maturation après la récolte. La deuxième approche a été construite pour étudier les variations des sucres dans les fruits au travers d’un modèle mécaniste. Ce modèle a été calibré en utilisant des données existantes (Lechaudel et al., 2005b ; Joas et al., 2009) et les données récoltées lors de l’approche expérimentale. Ce « modèle sucres » simule les variations des 4 sucres majeurs (amidon, sucrose, fructose et glucose) durant la croissance et la maturation sur l’arbre ainsi qu’en chambre froide. Cette approche a suggéré une forte importance, en pré-récolte, des métabolismes de synthèse de l’amidon et du saccharose. Alors qu’en post-récolte, les flux les plus important seraient ceux responsable de la synthèse du saccharose, de la dégradation de l’amidon ainsi que le flux représentant transformation des molécules de glucose en molécules de fructose. La troisième approche a utilisé un modèle « mangue virtuelle » pour identifier des pratiques agronomiques et de conservation potentiellement avantageuse pour améliorer la qualité des fruits. Le modèle « sucre » a été ajouté aux modèles de croissances existants (Lechaudel et al., 2005a, 2007). Ce couplage de modèle a été ensuite adapté pour estimer la perte en masse des fruits lors de la phase de conservation. Le modèle « mangue virtuelle » a été utilisé pour simuler les évolutions de la qualité en fonction de multiples scénarios possibles de pratiques culturales et de conditions de conservation. Ces simulations appuient l’importance des conditions de croissance et de la date de la récolte sur la qualité des fruits observées dans les analyses expérimentales. Des conditions non-limitantes (bonne irrigation et exposition lumineuse avec une charge en fruit raisonnable) permettraient d’obtenir la meilleure qualité possible. Les dates de récolte ainsi que les pratiques de conservation seraient alors sélectionnées en fonction des conditions de croissance et des marchés souhaités. Les récoltes tardives sont adaptées pour une vente locale avec des fruits de bonne qualité mais avec un temps de conservation court. Alors que des récoltes précoces assurent des durées de conservation longues au prix d’une légère diminution de la qualité des fruits à maturité. Même si le modèle « mangue virtuelle » ne permet de prédire que quelques indicateurs de qualités lors de la croissance et de la maturation des mangues. L’ensemble des analyses et des modèles produits se présentent comme des outils pertinents pour l’étude et le pilotage de l’élaboration de la qualité des mangues tout au long du continuum pré- et post-récolte.This thesis is part of a project initiated at CIRAD in 2000 (Lechaudel et al. 2004, Nodey et al. 2014) for the improvement of the quality of Cogshall mangoes produced in Réunion. The main objective of this study was to analyse the effect of agronomic practices and storage conditions on mango's quality considering the continuum between pre- and post-harvest. Then using those analysis to identify possible levers of controls to improve the quality of Cogshall mango. Three complementary approaches were used in this work. The first approach was an experimental study focused on the evolution of fruit quality according to agronomic practices (leaves to fruit ratio), harvest dates and storage conditions (temperature and storage duration). Quality was assessed using indicators of maturity (respiration and ethylene emissions), physical quality (fresh weight, dry weight, colour, etc.) and gustatory quality (sugar concentrations, acidity, etc.). The results showed the importance of the source-sink relationship between the fruit and the branch on the fruit’s growth. In addition, the quality of the fruit at harvest largely determines the quality of the fruit in storage at maturity. The harvest induces the maturation of harvested fruits. Storage practices are then used to control and optimize this harvest-induced ripening. Low temperatures used during storage can extend the storage duration and ensure an acceptable concentration of sugars even before the climacteric crisis. The second approach was designed to study the variations of sugars in fruits through a model. This model was calibrated using available data (Lechaudel et al., 2005b; Joas et al., 2009) and the data collected for the experimental approach. This 'sugar model' simulates the variations of the 4 main sugars (starch, sucrose, fructose, and glucose) during the growth and the maturation on-tree and stored fruits. This approach suggested a strong significance, in pre-harvest, of starch and sucrose synthesis metabolisms. While in post-harvest, the fluxes representing the sucrose synthesis, starch degradation and the transformation of glucose molecules into fructose molecules are the most significant ones. The third approach used a "virtual mango" model to identify potentially beneficial agronomic and storage practices to improve fruit quality. All models developed for the sugar model were added to existing growth models (Lechaudel et al., 2005a, 2007). This coupled model was then adapted to include the fruit’s weight loss during the storage phase. The 'virtual mango' model was used to simulate changes of quality (fresh weight, dry matter content and sweetness) according to multiple possible combinations of cultural practices and storage conditions. These simulations are in accordance with the observed significance of agronomical practices during the growth and harvest date on the quality of fully matured fruit. Non-limiting conditions (sufficient irrigation and light exposure with reasonable fruit load) would result in the best possible fruit quality. Harvest dates and storage practices would then be selected according to conditions during growth and selected markets. On the one hand, later harvests are more suitable for local markets with good quality fruit and a shelf life of a few days. On the other hand, earlier harvests allow for longer storage durations (export, longer time to market, etc.) at the cost of a slight decrease in fruit quality at maturity. Even though the "virtual mango" model can only predict variations in fresh weight, dry matter content and sugar concentrations throughout the growth and ripening of mangoes. All the analysis and models produced in this work are relevant tools for studying and monitoring the development of mango quality throughout the pre- and post-harvest continuum
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