1,720,986 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
No full textWe 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
Removal of anthraquinone dyes from aqueous solutions by adsorption, electrochemical oxidation and advanced oxidation processes
No full textU radu je ispitivana mogućnost uklanjanja ili razgradnje antrahinonskih boja C.I. kiselo
plavo 111 (AB111) i C.I. kiselo ljubičasto 109 (AV109) adsorpcijom, elektrohemijskom
oksidacijom i višim oksidacionim procesima.
Tokom ispitivanja uklanjanja ispitivanih antrahinonskih boja iz vodenih rastvora, korišćene
su čestice na bazi aluminijum-oksida dopovane različitim masenim udelom gvožđe(III)-oksida (4 i
13 mas. %) termički obrađene na temperaturama 700, 800 i 900 ℃. Karakterizacija termički
obrađenih čestica korišćenih tokom ispitivanja vršena je SEM-EDS i XRD analizama. Ispitan je
uticaj početne koncentracije adsorbenta i boje, početne vrednosti pH, vrste adsorbenta i temperature
na efikasnost uklanjanja boja i kinetiku adsorpcije. Takođe, određeni su i termodinamički modeli i
parametri adsorpcije antrahinonske boje AB111.
Ispitivanje obezbojavanja rastvora i razgradnje ispitivanih antrahinonskih boja
elektrohemijskom oksidacijom u zavisnosti od mehanizma procesa podeljeno je na dve celine:
direktnu i indirektnu elektrohemijsku oksidaciju. Tokom ispitivanja korišćena je IrOX anoda,
određena je zavisnost efikasnosti obezbojavanja rastvora od jačine struje, koncentracije elektrolita i
početne vrednosti pH rastvora. U radu je određen specifični utrošak električne energije u zavisnosti
od primenjene jačine struje.
Ispitivanje obezbojavanja rastvora i razgradnje molekula boja višim oksidacionim procesima
obuhvata primenu Fenton, foto-Fenton i elektro-Fenton (elektroasistirani-Fenton) procesa. Tokom
svih ispitivanja utvrđen je uticaj početne koncentracije vodonik-peroksida, Fe2+ jona i vrednosti pH
rastvora na efikasnost svih procesa, a tokom elektro-Fenton procesa ispitivan je i uticaj anode (IrOX
i Pt) i jačine struje na efikasnost i kinetiku obezbojavanja rastvora. Ispitan je i uticaj 2-propanola,
hlorida i sulfata na efikasnost obezbojavanja rastvora Fenton i elektro-Fenton procesima. U cilju
sagledavanja isplativosti procesa, izračunati su mogući troškovi obezbojavanja rastvora ovim
procesima.
Metoda UV-Vis spektrofotometrije je korišćena da bi se pratila promena koncentracije boje
tokom obezbojavanje rastvora. Efikasnost razgradnje boje AB111 elektrohemijskom oksidacijom i
višim oksidacionim procesima ispitivana je promenom vrednosti ukupnog organskog ugljenika
(TOC analiza). Joni koji su nastali razgradnjom boja detektovani su metodom jonske
hromatografije. Karakterizacija proizvoda razgradnje izvršena je FT-IR, HPLC-MS i GC-MS
analizama. Ispitivanjem klijanja Mung pasulja, određena su fitotoksikološka svojstva početnog
rastvora boje AB111 i rastvora dobijenih posle tretmana Fenton i elektro-Fenton procesima.The removal or degradation of anthraquinone dyes C.I. Acid Blue 111 (AB111) and C.I.
Acid Violet 109 (AV109) was studied by adsorption, electrochemical oxidation, and advanced
oxidation processes.
During the investigation of the anthraquinone dyes’ removal from aqueous solutions,
alumina-based particles doped with different mass fractions of iron (III)-oxide (4 and 13 wt %)
thermally treated at temperatures of 700, 800, and 900 ℃ were used. The characterization of the
heat-treated particles used during the examination was performed by SEM-EDS and XRD analyses.
The influence of the initial concentration of adsorbent and dye, initial value of pH, type of
adsorbent and temperature on the efficiency of dye removal and adsorption kinetics was
investigated. Also, thermodynamic models and adsorption parameters of anthraquinone dye AB111
were determined.
The study of the decolorization and degradation of the anthraquinone dyes by
electrochemical oxidation depending on the process mechanism was divided into two parts: direct
and indirect electrochemical oxidation. During the study, the IrOX anode was used, and the
dependence of the solution’s decolorization efficiency on the applied current, electrolyte
concentration, and initial pH value of the solution was determined. The specific consumption of
electricity depending on the applied current was determined.
The study of decolorization and degradation of the dyes by advanced oxidation processes
included the application of Fenton, photo-Fenton and electro-Fenton (electro-assisted-Fenton)
processes. During the study, the influence of the solution’s initial concentration of hydrogen
peroxide, Fe2+ ions and pH values on the efficiency of all processes was determined, and during the
electro-Fenton process the influence of the anode (IrOX and Pt) and current on the efficiency and
kinetics of the solution’s decolorization were examined. The influence of 2-propanol, chloride and
sulfate ions on the decolorization efficiency of the Fenton and electro-Fenton process was also
determined. In order to assess the cost-effectiveness of the process, the possible costs of
decolorization of the solution by these processes were calculated.
The UV-Vis spectrophotometry method was used to follow the change in the dyes’
concentration during the decolorization of the solution. The efficiency of AB111 degradation by
electrochemical oxidation and advanced oxidation processes was established by total organic
carbon analysis. Ions formed by dye degradation were detected by ion chromatography. The
characterization of the degradation products was performed by FT-IR, HPLC-MS and GC-MS
analyzes. The phytotoxicological properties of the AB111 dye solution as well as of the solutions
after the treatment by Fenton and electro-Fenton processes were determined using the Mung beans
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