1,720,957 research outputs found
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
Associazione tra positività urinaria per cannabinoidi e rischio di incorrere in sinistro stradale con feriti
No full textNonostante numerosi studi negli ultimi anni abbiano accertato come in una significativa percentuale di guidatori coinvolti in incidenti stradali ricorra la presenza di cannabinoidi nelle urine e nonostante nei controlli tossicologici su strada risulti notoriamente una significativa percentuale di positività urinaria ai cannabinoidi, l’interpretazione di tali dati, peraltro preoccupanti, è sempre stata piuttosto controversa. Infatti, sulla base delle nozioni fondamentali della tossicologia forense (inattività biologica dei metaboliti urinari, tempo di eliminazione urinario superiore alla finestra di attività farmacologica) la presenza nell’urina di metaboliti di sostanze psicoattive non può essere direttamente collegata ad una riduzione attuale delle performances psicofisiche e quindi dell’idoneità alla guida. D’altra parte non risultano studi prospettici che dimostrino come soggetti consumatori di cannabis e derivati presentino una incidentalità stradale superiore alla popolazione generale. Dunque, nonostante sia ragionevole ipotizzare sulla base di un principio di precauzione che l’identificazione della presenza urinaria di cannabinoidi controindichi la concessione o il rinnovo della patente di guida secondo quanto previsto dal DPR 495/92 e succ. mod. DPR 610/96 (particolarmente per quanto riguarda il “rischio di recidiva”), tali considerazioni ad oggi trovano una scarsa base di giustificazione oggettiva.
A seguito dei più recenti aggiornamenti del CdS che prevedono l’esecuzione di accertamenti tossicologici presso strutture sanitarie sui guidatori coinvolti in sinistri stradali con feriti, il presente lavoro è stato indirizzato alla valutazione dei risultati degli screening urinari eseguiti in questo contesto in paragone a quelli eseguiti sui lavoratori con mansioni a rischio (ex. Accordo Conferenza Permanente Stato-Regioni 18 settembre 2008), che vengono assunti come gruppo di controllo, essendo indubbiamente assimilabili alla popolazione generale dei conducenti di veicoli. Nonostante gli accertamenti tossicologici siano stati indirizzati alla determinazione delle principali sostanze d’abuso, il presente lavoro, per semplicità e al fine di aderire al tema del Congresso, si limita alla discussione dei risultati relativi ai cannabinoidi.
Le indagini sono state eseguite su 431 campioni urinari anonimi di guidatori di veicoli coinvolti in incidenti stradali e ricoverati presso le strutture ospedaliere della provincia di Verona negli anni 2009-2010. Parallelamente sono stati considerati 330 lavoratori sottoposti a screening urinario nell’ambito degli accertamenti tossicologici nella mansioni a rischio.
La procedura analitica impiegata prevede indagini immunometriche CEDIA® (Microgenics Corporation) con cut-off 50 ng/ml, e conferma mediante GC-MS con cut-off di 15 ng/ml (THC-COOH).
Gli accertamenti eseguiti sui campioni relativi agli incidenti stradali hanno evidenziato una percentuale di positività per cannabinoidi pari al 13.4%, di cui 10.0% come positività isolata e 3.4% come associazione con altre sostanze (cocaina, oppiacei, amfetamine).
Gli accertamenti eseguiti sui lavoratori con mansioni a rischio, pur relative ad una casistica limitata, hanno evidenziato una percentuale di positività per cannabinoidi comunque inferiore all’1%, in accordo con dati epidemiologici registrati a livello nazionale (rapporto RFI, Workshop Presentazione e Valutazione Risultati Progetti DPA 2010, Roma, 11-12 novembre 2010).
Come è evidente, una valutazione integrata dei dati, indica una prevalenza di positività nettamente elevata nei casi di incidente stradale rispetto al campione di controllo, che valutata con il test del “chi quadro” si attesta su una significatività maggiore dello 0.1%. Sembra dunque ragionevole ipotizzare come la “positività” al test urinario per cannabinoidi sia associabile ad un rischio di incidente stradale incrementato di almeno 13 volte rispetto alla popolazione generale
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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