1,721,033 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
Gevoeligheid van de geo-ecologie van overstromingsvlaktes voor menselijke impact in het Dijlebekken
No full textMany fluvial systems in West and Central European have undergone important changes in their sediment dynamics and sediment storage during the Holocene, and it is important to understand the driving forces of these changes in order to understand the sensitivity of fluvial systems to environmental changes. The overall objective of this PhD thesis is to provide a better understanding of the sensitivity of floodplain geomorphology and ecology (geoecology) to human impact in the landscape and to attain a detailed insight in the timing, nature and extent of human impact on floodplain geoecology. The Dijle catchment (758 km²), located within the Belgian loess belt, can serve as a model for most lowland rivers in the European loess area and is selected as the main study area in this thesis. Previously gathered data on sediment dynamics and floodplain geomorphology were combined with new detailed field-based sediment data, palynological data and radiocarbon ages to provide a more comprehensive overview of the changing floodplain geoecology in the Dijle catchment for the Holocene period. These data showed that during the Middle Holocene, the floodplain was mainly a relatively stable environment and consisted of a strongly vegetated marsh (dominated by an alder carr forest), which resulted in peat accumulation. Throughout the Late Holocene, floodplain geoecology changed with clearing of the Alder carr forest, the development of a single channel river and the dominance of minerogenic overbank sedimentation.A detailed chronology of the floodplain changes indicated that the end of the peat growth and the transition towards clastic overbank deposition was diachronous at the scale of the entire catchment, ranging between 6500 and 500 cal a BP. Moreover, a well-dated cross-section at the downstream end of the study area suggested that were the floodplain is wide, floodplain changes were asynchronous at cross-section scale, caused by a gradual increasing sediment input in the floodplain that first affected the near-channel parts. These results indicate that conclusions with respect to past changes in sedimentation rate and floodplain morphology should be based on a multi-transect and multi-core dating approach.In order to understand the role human impact has played in changing the floodplain geoecology, a reconstruction of vegetation changes and a semi-quantification of anthropogenic land cover changes were made, based on palynological and statistical analysis (cluster analysis and non-metric multidimensional scaling (NMDS)). The results show that the pollen records and the NMDS analysis could not detect Mesolithic or Neolithic human activities in the Dijle catchment. In these periods, human impact in the catchment was limited to local disturbances and small-scale forest clearances. The Dijle catchment was covered by deciduous forest, dominated by Quercus, Corylus and Tilia, the natural vegetation for the catchment. Only from the Bronze Age onwards (ca. 3900 cal a BP) human impact clearly increased and vegetation gradually changed. Human impact further increased from the Iron Age onwards, except for a temporary halt between ca. 1900 and 1600 cal a BP, possibly coupled with the Migration Period in Europe. The intensity and onset of the increasing human impact differs between the different study sites. The relationship between pollen deposited in the floodplain and the vegetation abundance in the landscape was provided based on simulations in the HUMPOL software suite. Such model simulations are needed to translate the modern pollen signal from alluvial sites into vegetation abundance in the surroundings of the sampling site. Our results indicate that HUMPOL simulations provide a better similarity to the observed pollen signal in the modern alluvial deposits, compared to the observed pollen and the vegetation in the catchment of the sampling site. However, more information on the importance of fluvial pollen transport is needed to correctly interpret the outcome of the multiple scenario approach (MSA), applied to fossil pollen assemblages from alluvial sites and to select the most likely reconstruction of past vegetation.Finally, the observed floodplain changes were evaluated against the available data on human impact, for the headwaters and for the entire Dijle catchment. This integrated approach demonstrated that during the Neolithic Period, human impact in the catchment was nearly absent and floodplains consisted of a strongly vegetated marshy environment where organic material accumulated, which is considered as the natural state of the floodplain. The increase in human impact from Bronze Age onwards caused an increase in soil erosion and in hillslope-floodplain connectivity. Consequently, sediment input in the floodplain system increased and floodplain geoecology changed towards a more open floodplain dominated by clastic overbank deposits, mainly as the indirect result of an intensification of agricultural activities. At the scale of the entire Dijle catchment, the gradual changes in floodplain morphology coincided with the gradually increasing human impact in the catchment, which suggests a linearity between the external forcing (human impact)and geomorphic response (floodplain change). However, at the narrow floodplains in the headwaters, the gradual increase in human impact contrasts with the abrupt change in floodplain geoecology, only triggered when human impact reached a threshold. Observed differences in the process-response model at catchment scale are attributed to differences in hillslope-floodplain connectivity, the location within the catchment and mainly to differences in the timing and intensity of human activities between different subcatchments.status: Publishe
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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