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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
Relazione tra modalità di risalita e cinetica di cristallizzazione nelle lave dell'Etna: un esempio di interpretazione cinetica della CSD
No full textObiettivo di questa tesi è la costruzione di un modello cinematico di risalita delle lave etnee basato sull’analisi congiunta delle CSD, dei dati sulle inclusioni magmatiche e dei calcoli geotermobarometrici. Un modello in grado di correlare le modalità di risalita con i processi ad essa associati, in particolare, il degassamento del fuso e i suoi effetti sulla cinetica di cristallizzazione registrati nelle strutture dei magmi eruttati.
Per questo lavoro, sono state prese in esame diverse lave etnee relative al periodo 2011-2013. Su i vari campioni sono stati condotti studi di analisi d’immagine al fine di ricostruire le Crystal Size Distribution (CSD) dei plagioclasi. Inoltre, sono state eseguite analisi chimiche al SEM sui clinopirosseni, in modo da poter ottenere informazioni su condizioni P-T di cristallizzazione, utilizzando il geotermobarometro di Putirka (Putirka et al., 2003).
Utilizzando dati di letterature sulle inclusioni magmatiche (Métrich et al., 2003), è stato possibile valutare il contenuto in H2O alle varie pressioni, ricostruendo così l’evoluzione del processo di essoluzione durante la risalita. La perdita di volatili, in particolare di H2O, tra tutti quello più abbondante, si riflette in una variazione della temperatura di liquidus, portando a un aumento della velocità di crescita dei cristalli e del loro tasso di nucleazione (Armienti et al., 2004); allo stesso modo, la variazione della temperatura del magma durante la risalita è strettamente connessa alle dinamiche della stessa, raffreddandosi con diversi tassi secondo la tipologia del moto di ascesa. Risulta quindi evidente come la cinematica di risalita controlli in maniera importante le leggi di crescita e nucleazione dei cristalli, portando a lave caratterizzate da diverse curve di CSD.
Una legge di crescita per i plagioclasi è stata stimata attraverso la regressione di dati sperimentali presenti in bibliografia (Carroll et al., 2003).
I tempi e la tipologia del moto di risalita sono le incognite di questo modello. Per questo motivo è necessario formulare delle ipotesi sulla tipologia del moto, vincolando questa al processo di cristallizzazione; in questo modo devono coincidere le tempistiche che permettono ai cristalli di raggiungere il numero e la taglia osservabile nelle rocce, con quelle del moto di ascesa del fuso verso la superficie. I tempi così ottenuti devono essere congrui con quelli che sono registrati nel contesto vulcanico reale: tempi di ritorno dell’attività esplosiva e del record sismico profondo, durata e frequenza dell’attività stromboliana antecedente le fasi più esplosive di fontane di lava.
The aim of this thesis is to construct a kinematic model of the ascent typology of Etnean lavas based on the combined analysis of the CSDs, data on magmatic inclusions and geothermobarometric calculations. This model must be able to correlate the ascent modalities with the processes associated with them, in particular, melt degassing and its effects on the crystallization kinetics, recorded in the structures of erupted magmas.
The lavas analyzed in this study refer to the eruptive period 2011-2013.
By using of software for image analysis, it was possible to reconstruct the CSDs for plagioclase crystals. Furthermore, chemical analyzes were conducted on the pyroxene crystals, in order to obtain information about P and T of crystallization, through the use of Putirka’s geothermobarometer (Putirka et al., 2003).
Using data on melt inclusion published by Métrich et al., 2003, it was possible to reconstruct the exsolution process during the ascent of magma, knowing the water content at different pressures.
Water is the most abundant volatile component in magmas; its exsolution induces a dramatic change in the liquidus temperature, thus producing observable effects on the rates of nucleation and growth of minerals (Armienti et al., 1994). Similarly, the variation of magma temperature during its ascent, is closely linked to its dynamics, cooling with different rates according to the typology of ascent motion. For these reasons, the laws of nucleation and growth of crystals are controlled by the kinetics of the ascent, through the variation of the undercooling that can be linked to the shape of the CSDs.
The law of Crystal growth rate has been calculated through the regression of literature experimental data (Carroll et al., 2003).
Transport time and the typology of motion appear to be the unknown quantities of this model. For this reason it is necessary to make certain assumptions about the type of motion, linking this to the crystallization process; in this way, the timing which allow the crystals to reach the number and size observed in the rocks must coincide with those of the ascent of the melt to the surface. Thus, transport time obtained must be congruent with those that are recorded in the real volcanic environment: return periods of explosive activity and the deep seismic records, duration and frequency of Strombolian activity preceding the most explosive stages of lava fountains
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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