1,722,228 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
Modelling the SED Evolution of Dusty Galaxies and Applications
No full textIn Chap. 2 our spectrophotometric model, GRASIL, is described in details. Since the first input to provide to GRASIL is the star formation history of the model galaxy, we describe our chemical code, that will then be used in different applications throughout the thesis. Then we present our adopted dust model, i.e. our choice for chemical and physical properties of dust grains, their optical efficiencies and size distribution. This is fixed according to the observations of extinction and emission for the diffuse ISM in our galaxy. Then, once we set the geometrical distribution of stars and dust, the radiative transfer of stellar radiation through the galaxy is solved, assuming the ISM is subdivided into a dense component, i.e. molecular clouds wherein stars are born, and a diffuse (cirrus) one, mostly associated with older stars. The preliminary inclusion of nebular emission and the radio emission are also described. Further computational details are in App. A.
Chap. 3 describes our library of single stellar populations (SSP). It provides the spectra for the generations of stars making up a galaxy model. In particular, we include the spectral effects of AGB dusty envelopes already in this spectral library. The method for this inclusion as well as the comparison with observations of late-type stars are presented. We discuss the possible breaking of the age-metallicity degenaracy intrinsic in integrated spectra of stellar populations, by considering optical and near/mid-IR flux ratios.
As a first application of our model, we consider in Chap. 4 local starbursts, normal spirals and ellipticals. We show the capability of our model to provide quantitative estimates of the properties of galaxies with different star formation activity and extinction by reproducing their SED. Also one high-z galaxy is addressed here, HRlO at z=l.44. In Chap. 5 we apply our model to study a sample of K-selected early-type galaxies in the HDF, for which UBVIJHK data are available. These galaxies show no signatures of dust, so that their modeling require only stellar spectral synthesis. We find the SED indicate a fairly wide range of ages (1.5 to 3 Gyrs) for the stellar populations in these objects, corresponding to a rather protracted star formation activity. In particular, we argue the absence of sample objects at z > 1.3 could be due to dust enshrouded starbursts occurring during the first few Gyrs of the galaxy lifetime.
The preliminary results of the same kind of study, for a sample of K-selected latetype galaxies in the HDF are in App. B. In this case we find a strong age-extinction degeneracy affects the analysis of the optical-near-IR SED available for the sample galaxies. We stress the importance of having a full coverage of the SED for galaxies undergoing star formation in order to be able to retrieve information.
In Chap. 6 we apply GRASIL as the observational interface to semi-analytical models of galaxy formation. The latter.provide the main inputs for GRASIL, i.e. star formation and metallicity enrichment histories, and most geometrical parameters - scalelengths of star distributions in the bulge and disk components. We compute a synthetic catalogue of local galaxies, distinguished in normal and stabursts, that we compare with observations: SEDs, extinction properties, luminosity functions in different bands. We find a global good agreement.
Some preliminarly results are also shown for high-z galaxy catalogues, compared with number counts and the cosmic background in different bands: the only real, and stimulating problem encountered is in the submm number counts, lower by an order of magnitue as compared to observations. A possible explanation is that star formation is
distributed in too many low luminosity objects
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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