1,720,973 research outputs found
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
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
Reproductive Biology Of The "glass Snake" Ophiodes Fragilis (squamata: Anguidae) In South-east Brazil
No full textThe reproductive cycles of tropical lizards can be continuous or seasonal, depending on a wide variety of factors, some of which are historical. Most studies on reproductive biology of lizards have been conducted on species in the Iguanidae, Gekkonidae, Teiidae, Lacertidae, and Scincidae. The few studies on anguid lizards have been on various alligator lizards and one species of Ophisaurus. This study presents data on sexual maturity, adult body size, neonate body size and body mass, fecundity, and male and female reproductive cycles of a population of Ophiodes fragilis from São Paulo and Paraná states in south-east Brazil. Females are larger and attain sexual maturity at a larger SVL than males. The female reproductive cycle is highly seasonal with secondary vitellogenesis starting in the middle of the rainy season (February). Embryos in early stages of development occur in the dry season (June) and parturition occurs at the transition from the dry season to the rainy season (August-December). Clutch size averages 7.5 young and is not related to maternal female size as in many other lizard species. Neonates were 33-57 mm in SVL and 0.45-0.85 g in mass. The residual volume of testes does not vary throughout the year suggesting a continuous spermatogenic cycle. Diameter of the deferent duct is largest from January to March (onset of the rainy season), suggesting that even though males produce sperm continuously, they store sperm until mating season.151913Almeida-Santos, S.M., Pizzatto, L., Marques, O.A.V., Intra-sex synchrony and inter-sex coordination in the reproductive timing of the coral snake Micrurus corallinus (Elapidae) (2003) Herpetological Natural History, , in pressBarbosa, O.R., Machado, C., Fernandes, L., Notas sobre a parturição da "cobra-de-vidro", Ophiodes striatus (Spix, 1825) (Sauria, Anguidae) (1991) Revista Brasileira de Biologia, 51, pp. 285-287Clerke, R.B., Alford, R.A., Reproductive biology of four species of tropical Australian lizards and comments on the factors regulating lizard reproductive cycles (1993) Journal of Herpetology, 27, pp. 400-406Conner, J., Crews, D., Sperm transfer and storage in the lizard, Anolis carolinensis (1980) Journal of Morphology, 163, pp. 331-348Dunham, A.E., Miles, D.B., Patterns of covariation in life history traits of squamate reptiles: The effects of size and phylogeny reconsidered (1985) American Naturalist, 126, pp. 231-257Fitch, H.S., Reproductive cycles in lizards and snakes (1970) Miscellaneous Publications of the Museum of Natural History University of Kansas, 52, pp. 1-247Fitch, H.S., Reproductive cycles in tropical reptiles (1982) Occasional Papers of the Museum of Natural History University of Kansas, 96, pp. 1-53Fitch, H.S., A field study of the slender glass lizard, Ophisaurus attenuatus, in northern Kansas (1989) Occasional Papers of the Museum of Natural History University of Kansas, 125, pp. 1-50Fox, W., Special tubules for sperm storage in female lizards (1963) Nature, 198, pp. 500-501Goldberg, S.R., Reproduction in the southern alligator lizard, Gerrhonotus multicarinatus (1972) Herpetologica, 28, pp. 267-273Goldberg, S.R., Reproduction in the Arizona alligator lizard, Gerrhonotus kingi (1975) Southwestern Naturalist, 20, pp. 409-420How, R.A., Dell, J., Wellington, B.D., Comparative biology of eight species of Diplodactylus gecko in western Australia (1986) Herpetologica, 42, pp. 471-482Inger, R.F., Greenberg, B., Annual reproductive patterns of lizards from a Bornean rainforest (1966) Ecology, 47, pp. 1007-1021James, C., Shine, R., The seasonal timing of reproduction: A tropical-temperate comparison in Australian lizards (1985) Oecologia, 67, pp. 464-474Kwait, G.A., Gist, D.H., Annual reproductive cycle of an introduced population of European wall lizard (Podarcis muralis) in Ohio (1987) Journal of Herpetology, 21, pp. 205-209Marques, O.A.M., Sazima, I., Historia Natural dos Répteis da Estação Ecológica Juréia-Itatins (2003) Estação Ecológica Juréia-Itatins: Ambiente Físico, Flora e Fauna, pp. 254-274. , Marques, O. A. V. & Duleba W. (Eds.). Ribeiräo Preto: Editera HolosMartins, M.B., (1998) Revisão Taxonômica e Sistemática Filogenética Do Gênero Ophiodes Wagler, 1828 (Sauria: Anguidae: Diploglossinae), , Umpubl. PhD. Thesis, PUCRS, Porto Alegre, BrasilMayhew, W.W., Reproduction in the granite spiny lizard, Sceloporus orcutii (1963) Copeia, 1963, pp. 144-152Nimer, E., (1989) Climatologia Do Brasil. 2nd ED., , IBGE. Departamento de Recursos Naturais e Estudos Ambientais. Rio de Janeiro, RJPatchell, F.C., Shine, R., Food habits and reproductive biology of the Australian legless lizard (Pygopodidae) (1986) Copeia, 1, pp. 30-39Patterson, J.K., Female reproductive cycles of the tropical lizard Mabuya striata (1990) Oecologia, 44, pp. 168-172Rocha, C.F.D., Reproductive and fat body cycles of the tropical sand lizard (Liolaemus lutzae) of southeastern Brazil (1992) Journal of Herpetology, 26, pp. 17-23Rocha, C.F.D., Vrcibradic, D., Reproductive traits of two sympatric vivivparous skinks (Mabuya macrorhyncha and Mabuya agilis) in Brazilian restinga habitat (1999) Herpetological Journal, 9, pp. 43-53Shine, R., Reproduction in Australian elapid snakes I - Testicular cycles and matting seasons (1977) Australian Journal of Zoology, 25, pp. 647-653Shine, R., The evolution of large body size in females: A critique of Darwin's "Fecundity advantage" model (1988) American Naturalist, 131, pp. 124-131Shine, R., Sexual dimorphism in snakes revised (1994) Copeia, 1994, pp. 326-346Tinkle, D.W., Wilbur, H.M., Tilley, S.G., Evolutionary strategies in lizard reproduction (1970) Evolution, 24, pp. 55-74Van Sluys, M., The reproductive cycle of Tropidurus itambere (Sauria: Tropiduridae) in southeastern Brazil (1993) Journal of Herpetology, 27, pp. 28-32Van Sluys, M., Mendes, H.M.A., Assis, V.B., Kiefer, M.C., Reproduction of Tropidurus montanus Rodrigues, 1987 (Tropiduridae), a lizard from a seasonal habitat of south-eastern Brazil, and a comparison with other Tropidurus species (2002) Herpetological Journal, 12, pp. 89-97Vieira, G.H.C., Wiederhecker, H.C., Colli, G.R., Bao, S.N., Spermiogenesis and testicular cycle of the lizard Tropidurus torquatus (Squamata, Tropiduridae) in the Cerrado of central Brazil (2001) Amphibia-Reptilia, 22, pp. 217-233Vitt, L.J., Reproductive biology of the anguid lizard, Gerrhonotus coeruleus principis (1973) Herpetologica, 29, pp. 176-184Vitt, L.J., Lizard reproduction: Habitat specificity and constraints on relative clutch mass (1981) American Naturalist, 117, pp. 506-514Vitt, L.J., Reproductive tactics of sympatric gekkonid lizards with a comment on the evolutionary and ecological consequences of invariant clutch size (1986) Copeia, 1986, pp. 773-786Vitt, L.J., Blackburn, D.G., Ecology and life history of the viviparous lizard Mabuya bistriata (Scincidae) in Brazilian Amazon (1991) Copeia, 1991, pp. 916-927Vitt, L.J., Lacher Jr., T.E., Behavior, habitat, diet and reproductive of the iguanid lizard Polychrus acutirostris in the caatinga of northeastern Brazil (1981) Herpetologica, 37, pp. 53-63Volsøe, H., Seasonal variation of the male reproductive organs of Vipera berus (L.) (1944) Spolia Zoologica Musei Hauniensis, 5, pp. 1-157Vrcibradic, D., Rocha, C.F.D., Reproductive cycle and life-history traits of the viviparous skink Mabuya frenata in southeastern Brazil (1998) Copeia, 1998, pp. 612-619Wiederhecker, H.C., Pinto, A.C.S., Colli, G.R., Reproductive ecology of Tropidurus torquatus (Squamata: Tropiduridae) in the highly seasonal Cerrado biome of central Brazil (2002) Journal of Herpetology, 36, pp. 82-91Wilhoft, D.C., Reproduction in the tropical Australian skink, Leiolopisma rhomboidalis (1993) American Midland Naturalist, 70, pp. 442-461Wilhoft, D.C., Gonadal histology and seasonal changes in the tropical Australian lizard, Leiolopisma rhomboidalis (1993) Journal of Morphology, 116, pp. 185-20
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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