1,720,960 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
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
Comparison of dose indicators of contrast mammography and digital tomosynthesis
No full textUvod: Rak dojke je najčešća zloćudna bolest žena s visokom stopom smrtnosti u razvijenim zemljama. U Hrvatskoj je učestalost raka dojke veća nego u ostatku Europe i stalno raste. Razvoj novih metoda oslikavanja dojki i organizirani mamografski probir značajno smanjuju smrtnost.
Cilj: Glavni je cilj istraživanja utvrditi vrijednost srednje glandularne doze (AGD) za postupke digitalne tomosinteze (DBT) i kontrastne mamografije (CEM) na uređaju Siemens Revelation u Centru za prevenciju i dijagnostiku kroničnih bolesti Doma zdravlja Primorsko-goranske županije (DZ PGŽ). Također, utvrdit će se postoji li statistički značajna razlika u vrijednostima AGD između DBT i CEM u DZ PGŽ te jesu li ove vrijednosti usporedive s onima objavljenim u recentnim međunarodnim publikacijama.
Metode: Medicinska dokumentacija pacijentica koje su prethodno podvrgnute dijagnostičkim postupcima CEM i DBT dojki analizirana je retrospektivno za svaku pretragu, uključujući dob pacijentica, ekspozicijske parametre pregleda (napon – kV, naboj – mAs), debljinu komprimirane dojke i AGD. Za razliku od standardne mamografije ili DBT, CEM uključuje primjenu intravenskog kontrastnog sredstva.
Rezultati: Pacijentice podvrgnute digitalnoj tomosintezi bile su, u prosjeku, mlađe od onih podvrgnutih kontrastnoj mamografiji, dok su tehnički parametri, poput debljine dojke, bili slični za sve tehnike oslikavanja. AGD za DBT bila je veća nego za standardni CEM protokol (CEM SP), ali nije bila statistički značajna (p=0,78). AGD za odgođeni CEM protokol (CEM OP) bila je veća nego kod DBT, a razlika je bila statistički značajna (p<0,001). Usporedbom AGD vrijednosti s drugim publikacijama pokazalo se da protokoli oslikavanja dojki koji se koriste u DZ PGŽ ne odstupaju od drugih centara te su usporedivi s vrijednostima objavljenim u recentnim publikacijama.
Zaključak: Rezultati istraživanja pokazali su da nema statistički značajne razlike u AGD za DBT i CEM SP preglede. Međutim, kod CEM OP protokola AGD je značajno veća. Uspostava i periodično praćenje doznih indikatora te usporedba s nacionalnim dijagnostičkim referentnim razinama ključni su za održavanje sigurnosti i kvalitete mamografskih pregleda. AGD vrijednosti u DZ PGŽ u skladu su s međunarodnim preporukama, što potvrđuje visoku kvalitetu mamografske prakse.Introduction: Breast cancer is the most common malignant disease in women with a high mortality rate in developed countries. In Croatia, the incidence of breast cancer is higher than in the rest of Europe and continues to rise. The development of new breast imaging techniques and organized mammography screening significantly reduce the mortality rate.
Objective: The primary objective of this study is to determine the average glandular dose (AGD) for digital breast tomosynthesis (DBT) and contrast-enhanced mammography (CEM) on the Siemens Revelation mammography unit at the Center for Prevention and Diagnosis of Chronic Diseases of the Primorsko-Goranska County Health Center (DZ PGŽ). In addition, the study aims to determine whether there is a statistically significant difference in AGD values between DBT and CEM at DZ PGŽ and whether these values are comparable to those published in recent international publications.
Methods: The medical records of patients who previously underwent diagnostic procedures of CEM and DBT were retrospectively analyzed for each examination, including the patients' age, exposure parameters (voltage - kV, charge - mAs), compressed breast thickness, and AGD. Unlike standard mammography or DBT, CEM involves the use of an intravenous contrast agent.
Results: Patients who underwent digital breast tomosynthesis were younger than those who underwent contrast-enhanced mammography, while technical parameters, such as breast thickness, were similar for all imaging techniques. AGD for DBT was higher than for the standard CEM protocol (CEM SP), but this difference was not statistically significant (p=0.78). AGD for the delayed CEM protocol (CEM OP) was higher than for DBT, and this difference was statistically significant (p<0.001). By comparing the AGD values with other publications, it was shown that the breast imaging protocols used in the DZ PGŽ do not deviate from other centers and are comparable to the values published in recent literature.
Conclusion: The results of the research showed no statistically significant difference in AGD for DBT and CEM SP examinations. However, AGD is significantly higher in the CEM OP protocol. Establishing and periodically monitoring dose indicators and comparing them with national diagnostic reference levels are crucial for maintaining the safety and quality of mammographic examinations. AGD values at DZ PGŽ are in line with international recommendations, confirming the high quality of mammographic practice
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