1,720,962 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
Highly photoconductive oxide films functionalized with GeSi nanoparticles
Get PDFGrowth of self-assembled quantum dots is of great interest due to their potential quantum confinement effect and numerous applications in optoelectronics and nano-sized structures. Semiconducting Si, Ge and SiGe nanocrystals (NCs), embedded in a dielectric-oxide matrix have for instance been found to exhibit strong quantum confinement. For SiGe nano-based structures in addition to strong quantum confinement effect they offer the advantage of fine tuneability of energy-band structure via quantum confinement, strain engineering and varying the Si/Ge ratio.
Among the most common methods to obtain NCs embedded in oxide systems is deposition with magnetron sputtering, followed by subsequent anneal treatments. However, the device performance obtained are lower in production line than obtained for research devices. This has mainly been attributed to the thermal treatment used, which causes strain accumulation within the structure, dislocations and dangling bonds, clustering and phase separation of Ge in Si1-xGex system, diffusion and formation of unwanted insulating oxide. All of these side-effects cause degradation of optical and electrical properties of the fabricated structures.
In this study, structures comprising of SiO2/SiGe/SiO2 and TiO2/SiGe/TiO2 were fabricated by utilizing radio frequency (rfMS), direct current (dcMS) and/or high power impulse magnetron sputtering (HiPIMS). The structures were then subjected to thermal and/or hydrogen (H2) plasma treatment. Their photocurrent intensity was increased by up to several orders of magnitude along with wider spectral coverage into near infra-red regime by controlling the sputter discharge and anneal parameters. Moreover, as a proof of concept, a control over the HiPIMS discharge parameters have exhibited the possibility of obtaining as-grown crystalline structures, consisting of SiGe NCs without the need of annealing, along with a viable control over the size of NCs. The annealing of such structure prepared via HiPIMS method, have shown an interesting self-organization of periodically arranged columnar SiGe NCs. Exposure to hydrogen plasma of both as-grown samples and annealed samples ensued amplification in photoconductivity by neutralization of dangling bonds and passivation of non-radiative defects in the oxide matrix and/or at SiGe/matrix interfaces.Ræktun sjálfsamsettra skammtapunkta er mjög áhugavert rannsóknaverkefni vegna margvíslegra notkunarmöguleika í ljósnæmum rafeindatækjum og ýmsum örsmáum skynjurum. Hálfleiðandi Si, Ge og SiGe öragnir í þunnhúðum úr torleiðiefnum (einkum málmoxíðum) hafa til dæmis reynst hafa sterka skammtaeiginleika. Sökum skammtahrifa má fínstilla þá ljós-öldulengd sem þarf til að gera þá leiðandi með því að stýra stærð öragnanna, hlutfalli milli Si og Ge og álagi sem þeir verða fyrir í þunnhúðinni.
Algengasta leiðin til að búa til ofangreind kerfi er þunnhúðun með segulspætun og hitameðhöndlun í kjölfarið. Hefðbundin hitameðferð veldur hinsvegar ákveðnum skemmdum í Si1-xGex kerfinu, s.s. lausum efnatengjum, efnis-aðskilnaði, myndun þyrpinga og útsveimi. Þessar aukaverkanir rýra ljós- og rafeiginleika efnisins. Framleiðslu aðferðir sem valda ekki slíkum skemmdum geta því haft mikla þýðingu.
Í þessari rannsókn voru riðspennu (rfMS)-, jafnspennu (dcMS) - og háaflpúlsuð segulspætun (HiPIMS) aðferðir notaðar til að rækta lög af SiO2/SiGe/SiO2 og TiO2/SiGe/TiO2 kerfum. Í kjölfarið var mildum hita- og vetnis rafgasmeðferðum beitt til að framkalla SiGe og Ge öragnir í húðinni sem sýndu breytilega ljósnæmni. Með þessum hætti tókst að auka ljósnæmnina um nokkrar stærðargráður auk þess sem næmnisvið litrófsins var víkkað. Önnur megin niðurstaða er að með notkun HiPIMS aðferðarinnar tóks að útbúa sýni með háa ljósnæmni án þess að hitameðhöndla þau. Meðhöndlun með vetnis-rafgasi leiddi til mikillar (stærðargráðu) aukningar á ljósnæmni húðanna, bæði fyrir og eftir hitaneðhöndlun.Technology Development Fund of the Icelandic Center for Research (RANNIS) grant no. 159006-0611, through the M-ERA NET program
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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