1,720,957 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
Alerjen Spesifik İmmunoglobulin E Tayini İçin Yüzey Plazmon Biyosensörlerin Geliştirilmesi
No full textAllergy is a mysterious chronic disease that causes the digestive system to be exposed to certain foods, the respiratory system to dust or pollen, or the skin to chemicals. Allergy is a very common disease affecting 10-20% of the world's population. Allergy affects 2% of the adult population and 8% of children. Immunoglobulin E (IgE) level rises in allergic conditions. The main allergenic sources are pollen, foods, mites, molds and poisons. Therefore, the increase in IgE level is important for the diagnosis of allergic diseases such as asthma, eczema and hay fever. Food allergy is defined by the adverse reactions of the immune system when triggered by the consumption of certain foods. Food allergy reactions occur as a result of the recognition of allergenic proteins by allergen-specific IgE antibodies. For some allergic individuals, selective food contact can develop into life-threatening reactions (such as anaphylactic shock). Traditional methods for allergen detection are Enzyme-linked immunosorbent analysis (ELISA), which usually requires enzymatic labeling. This labeling process is time consuming and can alter the immunochemical activity of target biomolecules. Surface plasmon resonance (SPR) is a well-known technology for the measurement of interactions between biomolecules. In this thesis, optical-based surface plasmon resonance biosensors were prepared for allergen-specific serum IgE determination. The SPR biosensor gold chip surface is primarily functionalized with 3-mercaptopropionic acid. The covalent coupling of N-ethyl-N'-(3-diethylaminopropyl) carbodiimide (EDC)/sulfo-N-hydroxysulfosuccinimide (NHS) has been performed to activate carboxylic acid functions. Anti-immunoglobulin E (anti-IgE) with terminal amine groups on the antibody were then immobilized to the surface as recognition sites. The prepared SPR biosensor chip surface was characterized by the contact angle, atomic force microscope (AFM) and ellipsometry. Surface roughness values were found as 0.28 nm and 8.36 nm for the bare chip surface and the modified chip surface, respectively. The detection of IgE has been carried out in the broad range of 1.0 ng/mL-1000 ng/mL. The detection of IgE was performed with the SPR biosensor in plasma and aqueous solutions very selectively with an analysis time of approximately 10 minutes. The limit of detection (LOD) value for IgE was found to be 0.22 ng/mL. Selectivity studies were performed with albumin, immunoglobulin G, and myoglobin as similar proteins. In reusability studies, IgE samples were given to the SPR biosensor system five times in a sequence and were examined the stability of the signal response. Scatchard, Langmuir, Freundlich and Langmuir-Freundlich adsorption isotherm models were calculated to examine the surface homogeneity of the designed SPR biosensor gold chips. The adsorption behavior of both chips was found following the Langmuir isotherm model.Alerji dünya nüfusunun %10-20’sini etkileyen oldukça yaygın kronik bir hastalıktır. Alerji, yetişkin nüfusun %2'sini ve çocukların %8'ini etkilemektedir. Alerjik hastalıklar, solunum sisteminin toz ve polenlere, sindirim sisteminin belirli bir gıdaya, cildin bir kimyasal maddeye maruz kalması ile ortaya çıkabilir. Serumda, antijen-spesifik immunoglobulin E’nin (IgE) tayini antijene karşı aşırı duyarlılığı belirtir. IgE düzeyi alerjik durumlarda yükselir. Başlıca alerjenik kaynaklar polenler, besinler, akarlar, küfler ve zehirlerdir. Bu nedenle astım, egzama ve saman nezlesi gibi alerjik hastalıkların teşhisi için IgE düzeyindeki artış önemlidir. Alerjen tespiti için geleneksel yöntemler genellikle enzimatik etiketleme gerektiren Enzim-bağlı immunosorbent analizi (ELISA) tekniğidir. Bu etiketleme süreci zaman alıcıdır ve hedef biyomoleküllerin immunokimyasal aktivitesini değiştirebilir. Yüzey plazmon rezonans (SPR), biyomoleküller arasındaki etkileşim ölçümü için iyi bilinen bir teknolojidir. Bu tez kapsamında alerjen-spesifik serum IgE tayini için optik temelli yüzey plazmon rezonans biyosensörler hazırlanmıştır. SPR biyosensor çip yüzeyi öncelikle 3-merkaptopropionik asit ile işsevleştirilmiştir. N-etil-N′-(3-dietilaminopropil)karbodiimid (EDC)/sülfo-N-hidroksisülfosüksinimit (NHS) ile aktive edilmiş karboksilik asit fonksiyonlarına kovalent bağlanması gerçekleştirilmiştir. Antikor üzerindeki terminal amin grupları ile Anti-immünoglobulin E daha sonra tanıma bölgeleri olarak yüzeye immobilize edilmiştir. Hazırlanan SPR biyosensor çip yüzeyi temas açısı, atomik kuvvet mikroskop (AFM) ve elipsometre ile karakterize edilmiştir. Yüzey pürüzlülük değerleri boş çip yüzeyi ve modifiye edilmiş çip yüzeyi için sırasıyla 0.28 nm ve 8.36 nm olarak bulunmuştur. IgE tayini 1.0 ng/mL-1000 ng/mL derişim aralığında yürütülmüştür. SPR biyosensörde plazma ve sulu çözeltilerde IgE’nin tayini yaklaşık 10 dakika analiz süresiyle çok seçici bir şekilde gerçekleştirilmiştir. IgE tayin sınırı (LOD) 0.22 ng/mL olarak bulunmuştur. Albumin, immunoglobulin G, miyoglobin proteinleri ile seçicilik çalışmaları gerçekleştirilmiştir. Tekrarlanbilirlik çalışmaları SPR biyosensor sistemine ard ard 5 defa IgE örnkeleri verilerek sinyal yanıt kararlılığı incelenmiştir. Tasarlanan SPR biyosensor çiplerin yüzey homojenliğini incelemek için Scatchard, Langmuir, Freundlich ve Langmuir-Freundlich adsorpsiyon izoterm modelleri hesaplanmıştır. Hem çiplerde adsorpsiyon davranışı, Langmuir izoterm modeline uygun olarak bulunmuştur
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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