1,720,954 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
Climate change impact on water balance and export of dissolved organic carbon : a sub-catchment modelling approach
Full text linkClimate change will alter the hydrological cycle in the 21st century with implications for the water balance and water quality. As characteristics of the landscape may vary significantly between nearby locations, hydrological models need to be able to delineate responses attributed to specific landscape characteristics, to estimate their responses to altered climatic drivers. Small streams are the main carriers of Dissolved Organic Carbon (DOC) originating from the terrestrial landscape, however the mechanisms controlling production and mobilisation are not yet fully scientifically understood. The Skogaryd research catchment in Sweden was established in 2013 and includes characteristically different sub-catchments where discharge and other abiotic measurements take place at sub-catchment level and at the main catchment outlet. Covering the dynamics of the constituent sub-catchments would facilitate environmental assessments of the large catchments as the respective contribution of runoff and solutes are known. This study’s aims were to 1) model and compare the water balance of two characteristically different sub-catchments; a forest on mineral soil-, and a mire in the Skogaryd research catchment, by means of the hydrological model HYPE, 2) investigate the impact of climate change on the water balance, especially discharge, and 3) quantify DOC export by studying the control on the temporal DOC aquatic-terrestrial connectivity in the two sub-catchments. The model HYPE (HYdrological Predictions for the Environment) was set-up and calibrated for both catchments. Downscaled regional bias corrected climate data following the climate scenarios RCP2.6, RCP4.5 and RCP8.5 was then applied to the HYPE model. DOC was sampled and then modelled using catchment specific linear regression derived from an Automatic Linear Modelling regression analysis. The model adequately captured seasonal dynamics in the hydrological regime in spring, winter and autumn but not in summer. The HYPE model simulated a decrease in discharge in the long-term future, which is inconsistent with other model studies. The running mean temperature 60 days prior to sampling could explain 57% and 65% of DOC concentrations for the mire and forest sub-catchment, respectively. Likely, discharge will alter in the long-term future, there will be a shift towards autumn and winter discharge, whereas snowmelt driven discharge will diminish. Both catchments proved a very strong temperature control to DOC concentrations; however, the model likely captured the production of DOC rather than the mobilisation. Due to the complex interactions, governing DOC production and mobilisation, it was not possible to estimate the effect of climate change on DOC export.Att förutsäga framtiden – modellering som ett verktyg för att förutsäga vattenkvantitet och vattenkvalitet Inom 100 år så kommer klimatet förändrats avsevärt om utsläpp av växthusgaser fortsätter i samma takt som idag. Detta kommer påverka temperatur, nederbörd vilka i sin tur påverkar flödet av vatten i Sverige. Ett avrinningsområde består av olika jordtyper, vegetation och topografi, vilka alla kan variera mycket inom ett litet område. För att kunna göra estimeringar av vattenkvalitet och vattenkvantitet i framtiden när klimatet sannolikt kommer att vara förändrat jämfört med idag, så måste hänsyn tas till denna rumsliga variation. Dagens hydrologiska modeller har svårt att fånga dessa små men viktiga skillnader i till exempel jordmån i ett avrinningsområde. Ur klimatperspektiv är det nämligen viktigt att täcka in små skillnader för att kunna göra så riktiga förutsägningar inför framtiden som möjligt. Klimatförändringar kommer att förändra den hydrologiska cykeln under 2000-talet med konsekvenser både för vattenbalansen och vattenkvaliteten. Mindre bäckar och vattendrag är stora källor till löst organiskt kol (DOC), som i sin tur härrör från marken. De mekanismer som styr produktion och utlakning av DOC är inte helt förstådda rent vetenskapligt. Vattenbalansen och DOC är tätt sammankopplade. Miljöbedömningar skulle underlättas om orsak och verkan till avrinning och utlakning av DOC förstods för olika typer av naturområden. Syftet med studien var att 1) modellera och jämföra vattenbalansen mellan två karakteristiskt olika delområden; en skog på mineraljord, och en myr, med hjälp av den hydrologiska modellen HYPE, 2) undersöka klimatförändringarnas inverkan på vattenbalansen, särskilt vattenföring, och 3) kvantifiera DOC-export genom att studera utlakningen på DOC kopplat till vattenföringen. För framtidens klimat användes redan framtagna klimatscenarier som motsvarade tre olika utsläppsscenarier, eftersom vi idag inte vet hur stora utsläpp av växthusgaser vi kommer ha framöver. DOC mättes och därefter skapades en matematisk modell som var specifik för de båda avrinningsområdena. HYPE-modellen gav tillfredsställande resultat gällande säsongsdynamik i vattenföring på vår, vinter och höst men inte på sommaren. HYPE-modellen simulerade en minskning av vattenföring på lång sikt, vilket strider mot andra modellstudier. DOC-modellen kunde förklara 57% och 65% av DOC-koncentrationerna för respektive avrinningsområde, vilket är väldigt bra. Sannolikt kommer vattenföringen att förändras på lång sikt, och det kommer att ske ett skifte mot högre flöden under höst och vinter jämfört med idag, då störst flöden uppnås vid snösmältningen under tidig vår. Båda avrinningsområdena visade en mycket stark temperaturkontroll till DOC-koncentrationer i vattendragen. Dock så fångade modellen sannolikt produktionen av DOC snarare än utlakningen från jorden. På grund av de komplexa interaktionerna mellan produktion och utlakning av DOC var det inte möjligt att uppskatta effekterna av klimatförändringar på DOC-export för de här två olika områdena. Nyckelord: naturgeografi, hydrologiskmodellering, vattenföring, DOC, klimatförändringar Rådgivare: Stina Sandgren Masterprojekt 30 poäng i naturgeografi och ekosystemanalys, 2017 Institutionen för naturgeografi och ekosystemanalys, Lunds universitet, studentuppsatsserie INES nr 44
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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