1,721,058 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
Performance analysis of P-band multi-temporal block tomography : possible acquisition scenarios for the BIOMASS mission
No full textLAUREA MAGISTRALELa missione BIOMASS prevede di sfruttare per la prima volta un radar spaziale specifico con una frequenza di 435 MHz (frequenza in banda P). Questo strumento mira a mappare la biomassa forestale su scala globale. Sulla base di recenti risultati basati su campagne a lungo termine basate su torri in banda P, vengono proposte nuove possibilità di utilizzo dei dati della prossima missione. La combinazione di dati suggerita e gli scenari di acquisizione riguardano il calcolo di cubi 3D utilizzando i dati di una fase specifica della missione. Questa combinazione innovativa è chiamata tomografia a blocchi multitemporale e fa stime della foresta da cubi multipli grazie a due triplette di immagini di quest'ultima che sono separate da un intervallo di mesi. Ogni cubo è associato a una certa energia.
L'obiettivo è di misurare la qualità della rappresentazione 3D della foresta che diminuisce con gli intervalli di tempo. La posizione del terreno e la conservazione del volume degli alberi determinano la qualità della rappresentazione della foresta e sono misurate da metriche da noi definite. Due tipi di tecniche di ricostruzione 3D utilizzate nella missione BIOMASS, Beamforming e Capon, sono fatte per misurare la diminuzione della qualità.
La simulazione è fatta su dati tropicale aviotrasportato TropiSAR. Sulla base dell'osservazioni a lungo termine di TropiScat, l'intervallo di tempo viene simulato con l'iniezione di rumore nelle triplette di immagini. Vengono fatte simulazioni multiple per rappresentare intervalli di tempo. Per ogni simulazione, le metriche informano sulla qualità della rappresentazione 3D e permettono di anticipare i risultati futuri di BIOMASS. Inoltre, TropiSAR utilizza dati polarizzati come la missione BIOMASS. L'importanza della polarizzazione nella qualità è evidenziata.
I risultati della metrica del volume mostrano errori energetici non critici fino a un certo valore. Al di sopra di questo valore, questa tecnica innovativa non è disponibile. Per qualsiasi foresta tropicale, parte dell'errore energetico può essere compensato in questa tecnica grazie alle simulazioni multiple su TropiSAR. I risultati forniscono una base per approcci alternativi.The BIOMASS mission plans to exploit for the first time ever a specific space radar with a 435 MHz frequency (P-band frequency). This instrument aims at mapping forest biomass at global scale. Fostered by recent results based on long-term P-band tower based campaigns, new possibilities in the use of the upcoming mission data are proposed. The suggested data combination and acquisition scenarios concern the computation of 3D cubes using data of a specific phase of the mission. This innovative combination is called multi-temporal block tomography and makes estimates of the forest by multiple cubes thanks to two image triplets of this latter that are separated by a months interval. Each cube is associated to a certain energy that represents the forest at a given 3D localization.
The objective is to measure the quality of the forest 3D representation that decreases with time intervals. The position of the ground and the volume preservation of trees determine the quality of the forest representation and they are measured by metrics we define. Two types of 3D reconstruction techniques used in the BIOMASS mission, Beamforming and Capon, are done to measure the decrease of quality with time intervals.
The simulation is done on a tropical airborne data TropiSAR. Based on the long term observation from TropiScat, the time interval is simulated with the injection of noise in the image triplets. Multiple simulations are done to represent time intervals. For each simulation, metrics inform about the quality of the 3D representation and they enable to anticipate the future BIOMASS results. Also, TropiSAR uses polarized data like the BIOMASS mission. The importance of the polarization in the quality is highlighted.
The results of the volume metrics show non-critical energetic errors up to a certain value. Above this value, this innovative technique is not available. For any tropical forests, parts of the energetic error can be compensated in this technique thanks to the multiple simulations on TropiSAR. The results provide a basis for alternative approaches
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
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