1,720,953 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
Synthesis of acrylamide-based cryogels and investigation of their use in removal of textile dyes
No full textTekstil atık sularında bulunan boyar maddelerin giderimi, ekosistem dengesi, halk sağlığı ve sürdürülebilir su yönetimi açısından kritik bir öneme sahip olduğundan bu çalışmada, tekstil endüstrisi atık sularında bulunan boyar maddelerin giderimi için akrilamid tabanlı anyonik ve katyonik özellikte kriyojeller sentezlenmiş, model boyar maddeler olarak kullanılan katyonik özellikteki metilen mavisi ve anyonik özellikteki asit mavi 193 boyaları üzerindeki adsorpsiyon performanslarını karşılaştırmalı olarak değerlendirilmesi amaçlanmıştır. En etkin giderim yapan poli(akrilamid-vinilsülfonik asit) (poli(AAm-VSA)) anyonik ve poli(akrilamid-vinilimidazol)/kitosan (poli(AAm-VI)/CS) katyonik kriyojelleri kullanılarak adsorpsiyon prosesinde optimum koşullarının belirlenebilmesi için; kriyojel miktarı, başlangıç boya derişimi, çözeltinin pH'ı ve temas süresi gibi parametrelerin etkileri incelenmiştir. Kriyojellerin karakterizasyonu FT-IR ve SEM analizleri ile yapılmış, farklı pH ortamlarında şişme davranışları değerlendirilmiştir. Langmuir, Freundlich, Dubinin-Radushkevich adsorpsiyon izotermleri ve yalancı birinci derece, yalancı ikinci derece kinetik modelleri ile matematiksel modelleme yapılmıştır. Adsorpsiyon süreçlerinde; metilen mavisi giderimi için ise pH 7 başlangıç boya derişimi 100 ppm, temas süresi 60 dakika, 0.1 gram anyonik kriyojel miktarı; asit mavi 193 giderimi için ise pH 7, başlangıç boya derişimi 500 ppm, temas süresi 60 dakika, 0.1 gram katyonik kriyojel miktarı; optimum koşullar olarak belirlenmiştir. Her iki boyarmadde giderimi için Freundlich izotermi (metilen mavisi R2=0.9907; asit mavi 193 R2=0.9920) en iyi uyumu göstermiştir. Adsorpsiyon kinetiğinin ise her iki boyar madde giderimi için yalancı ikinci derece kinetiğe uyduğu belirlenmiştir. Sonuçlar, anyonik karakterli kriyojellerin katyonik metilen mavisi, katyonik karakterli kriyojellerin ise anyonik asit mavi 193 boyar maddelerini yüksek verimlilikle uzaklaştırabildiğini; dolayısıyla boyar madde türüne özgü seçicilik ve etkin bir adsorpsiyon mekanizmasına sergilediğini ortaya koymuştur. Bu bağlamda, yüksek adsorpsiyon kapasitesi, kolay uygulanabilirlik ve yeniden kullanılabilirlik gibi avantajlarıyla söz konusu kriyojellerin, sürdürülebilir ve çevre dostu adsorbanlar olarak tekstil atıksularının arıtımında güçlü bir alternatif oluşturabileceği sonucuna ulaşılmıştır.The removal of dyes present in textile wastewater is of critically important in terms of ecosystem balance, public health, and sustainable water management. In this study, acrylamide-based anionic and cationic cryogels were synthesized for the removal of dyes from textile industry wastewater, and their adsorption performances were comparatively evaluated using cationic methylene blue and anionic acid blue 193 as model dyes. The most effective cryogels, poly(acrylamide-vinylsulfonic acid) (poly(AAm-VSA)) with anionic character and poly(acrylamide-vinylimidazole)/chitosan (poly(AAm-VI)/CS) with cationic character, were employed to investigate the influence of process parameters such as cryogel dosage, initial dye concentration, solution pH, and contact time in order to determine the optimum conditions for adsorption. The structural characterization of the cryogels was performed using FT-IR and SEM analyses, while their swelling behavior in different pH environments was also evaluated. Mathematical modeling was carried out using Langmuir, Freundlich, and Dubinin–Radushkevich adsorption isotherms as well as pseudo-first-order and pseudo-second-order kinetic models. In adsorption processes, the optimum conditions were determined as follows: for methylene blue removal, pH 7, an initial dye concentration of 100 ppm, a contact time of 60 minutes, and 0.1 g of anionic cryogel; and for acid blue 193 removal, pH 7, an initial dye concentration of 500 ppm, a contact time of 60 minutes, and 0.1 g of cationic cryogel. In both dye removal processes, the Freundlich isotherm (R² = 0.9907 for methylene blue; R² = 0.9920 for acid blue 193) provided the best fit. Furthermore, adsorption kinetics were found to follow the pseudo-second-order model for both dyes. The results demonstrated that anionic cryogels can effectively remove cationic methylene blue, while cationic cryogels can efficiently remove anionic acid blue 193, thereby exhibiting dye-specific selectivity and an efficient adsorption mechanism. In this context, owing to their high adsorption capacity, ease of application, and reusability, these cryogels can be considered as sustainable and environmentally friendly adsorbents with strong potential for application in the treatment of textile wastewater
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
- …
