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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Occurrence Of Polycyclic Aromatic Hydrocarbons Derivatives And Mutagenicity Study In Extracts Of Pm10 Collected In São Paulo, Brazil
No full textNitro-PAH and oxy-PAH fractions in organic extracts of PM10 collected in São Paulo City, Brazil (winter, 2004) were chemically and toxicologically analyzed. Some nitro- PAH compounds that are emitted from vehicular motor exhaust were quantified. The 3-nitrofluoranthene, which probably coeluted with the 2-nitrofluoranthene, a secondary pollutant, presented higher levels (average: 0.16 ng m-3; maximum concentration: 0.26 ng m -3) than 1-nitropyrene (average: 0.031 ng m-3; maximum concentration: 0.054 ng m-3). No detectable amount of 6-nitrocrysene was found. Oxy-PAH compounds were not detected probably because they were present at concentrations much low. Both nitro- and oxy-PAH fractions have showed a similar frameshift mutagenic response with a higher potency in the absence of S9 compared to that in the presence of S9, indicating the prevalence of direct-acting compounds for the Salmonella/ microsome assay. The responses observed for the YG1041 strain (up to 1200 revertants μg-1) were significantly higher than for the TA98 (up to 28 revertants μg-1) indicating the presence of nitroaromatic compounds. 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Part 2: PAHs adsorbed on diesel particulate exhaust SRM 1650a (2006) Atmos Environ, 40, pp. 201-211Kallio, M., Hyotylainen, T., Lehtonen, M., Jussila, M., Hartonen, K., Shimmo, M., Riekkola, M.-L., Comprehensive two-dimensional gas chromatography in the analysis of urban aerosols (2003) Journal of Chromatography A, 1019 (1-2), pp. 251-260. , DOI 10.1016/S0021-9673(03)01238-XOda, J., Nomura, S., Yasuhara, A., Shibamoto, T., Mobile sources of atmospheric polycyclic aromatic hydrocarbons in a roadway tunnel (2001) Atmospheric Environment, 35 (28), pp. 4819-4827. , DOI 10.1016/S1352-2310(01)00262-X, PII S135223100100262XSienra, M.M.R., Oxygenated polycyclic aromatic hydrocarbons in urban air particulate matter (2006) Atmos Environ, 40, pp. 2374-2384Ciccioli, P., Cecinato, A., Brancaleoni, E., Frattoni, M., Zacchei, P., Vasconcellos, P.C., The ubiquotous occurrence of nitro-PAH of photochemical origin in airborne particles (1995) Ann Chim, 85, pp. 455-469Enya, T., Suzuki, H., Watanabe, T., Hirayama, T., Hisamatsu, Y., 3-Nitrobenzanthrone, a powerful bacterial mutagen and suspected human carcinogen found in diesel exhaust and airborne particulates (1997) Environmental Science and Technology, 31 (10), pp. 2772-2776. , DOI 10.1021/es961067iCecinato, A., Marino, F., Di, F.P., Lepore, L., Possanzini, M., Distribution of n-alkanes, polynuclear aromatic hydrocarbons and nitrated polynuclear aromatic hydrocarbons between the fine and coarse fractions of inhalable atmospheric particulates (1999) Journal of Chromatography A, 846 (1-2), pp. 255-264. , DOI 10.1016/S0021-9673(99)00129-6, PII S0021967399001296Marino, F., Cecinato, A., Siskos, P.A., Nitro-PAH in ambient particulate matter in the atmosphere of Athens (2000) Chemosphere, 40 (5), pp. 533-537. , DOI 10.1016/S0045-6535(99)00308-2, PII S0045653599003082Schnelle-Kreis, J., Gebefugi, I., Welzl, G., Jaensch, T., Kettrup, A., Occurrence of particle-associated polycyclic aromatic compounds in ambient air of the city of Munich (2001) Atmos Environ, 35, pp. S71-S81Feilberg, A., Ohura, T., Nielsen, T., Poulsen, M.W.B., Amagai, T., Occurrence and photostability of 3-nitrobenzanthrone associated with atmospheric particles (2002) Atmospheric Environment, 36 (22), pp. 3591-3600. , DOI 10.1016/S1352-2310(02)00255-8, PII S1352231002002558Castells, P., Santos, F.J., Galceran, M.T., Development of a sequential supercritical fluid extraction method for the analysis of nitrated and oxygenated derivatives of polycyclic aromatic hydrocarbons in urban aerosols (2003) Journal of Chromatography A, 1010 (2), pp. 141-151. , DOI 10.1016/S0021-9673(03)01121-XShimmo, M., Anttila, P., Hartonen, K., Hyotylainen, T., Paatero, J., Kulmala, M., Riekkola, M.-L., Identification of organic compounds in atmospheric aerosol particles by on-line supercritical fluid extraction-liquid chromatography-gas chromatography-mass spectrometry (2004) Journal of Chromatography A, 1022 (1-2), pp. 151-159. , DOI 10.1016/j.chroma.2003.09.024Sato, M.I.Z., Valent, G.U., Coirmbrão, C.A., Coelho, M.C.L.S., Sanchez, P.S., Alonso, C.D., Martins, M.T., Mutagenicity of airborne particulate organic material from urban and industrial areas of São Paulo, Brazil (1995) Mutat Res, 335, pp. 317-330De Castro, V.P., Artaxo, P.E., Ciccioli, P., Cecinato, A., Brancaleoni, E., Frattoni, M., Chemical composition of aerosol collected in the Amazon forest (1998) Quimica Nova, 21 (4), pp. 385-393Vasconcellos, P.C., Zacarias, D., Pires, M.A.F., Pool, C.S., Carvalho, L.R.F., Measurements of polycyclic aromatic hydrocarbons in airborne particles from the metropolitan area of São Paulo City, Brazil (2003) Atmospheric Environment, 37 (21), pp. 3009-3018. , DOI 10.1016/S1352-2310(03)00181-XMontero, L., Vasconcellos, P.C., Souza, S.R., Pires, M.A.F., Sanchez-Ccoyllo, O.R., Andrade, M.F., Carvalho, L.R.F., Measurements of atmospheric carboxylic acids and carbonyl compounds in São Paulo City, Brazil (2001) Environmental Science and Technology, 35 (15), pp. 3071-3081. , DOI 10.1021/es001875gOrlando, J.P., Alvim, D.S., Yamazaki, A., Corrêa, S.M., Gatti, L.V., Ozone precursors for the São Paulo Metropolitan Área (2010) Sci Total Environ, 408, pp. 1612-1620Ciccioli, P., Cecinato, A., Brancaleoni, E., Frattoni, M., Zacchei, P., Formation and transport of 2-nitrofluoranthene and 2-nitropyrene of photochemical origin in the troposphere (1996) J Geophys Res, 101, pp. 19567-19581Pedersen, D.U., Durant, J.L., Taghizadeh, K., Hemond, H.F., Lafleur, A.L., Cass, G.R., Human cell mutagens in respirable airborne particles from the northeastern United States. 2. 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Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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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