1,720,954 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
On the ecology of rorqual whales (Balaenopteridae) in Irish waters using intrinsic markers
Get PDFDespite repeated calls for an ecosystem-based approach to the management of marine resources, little information exists on the ecosystem role and requirements of top predators such as baleen whales in Irish waters. Considering that they are long-lived and highly migratory, baleen whales such as rorquals (Family Balaenopteridae] are potentially useful bio-monitors of anthropogenic environmental change. However, their use as environmental indicators is precluded by an insufficient understanding of their basic ecology. Following centuries of whaling and other emerging threats to their survival including pollution, bycatch and ship-strikes, the conservation status of most rorqual species is difficult to assess due to a shortfall in our knowledge. This thesis aims to facilitate more informed management decision-making and the implementation of more effective conservation measures by bridging key gaps in our knowledge. Pertinent questions on feeding and migration ecology are addressed using intrinsic markers, i.e. chemicals whose stable properties ensure they move through biotic systems and are detectable in tissues. Intrinsic markers include naturally occurring [e.g. stable isotopes, DNA, trace elements] and anthropogenic compounds (e.g persistent organic pollutants or POPs]. In Chapter 1, current knowledge on the ecology of blue [Balaenoptera musculus], fin (R physalus), humpback (Megaptera novaengliae] and minke whales (Racutorostrata] in Irish waters is reviewed. In chapter 2, stable isotope analysis of baleen from these four species is used to approximate the ecological niche and thus to examine resource partitioning. Chapter 3 is a methodological precursor to Chapter 4 where stable isotope
Bayesian mixing models are used to investigate the preferred diet of fin and humpback whales in the Celtic Sea. In Chapter 3, unpredictable effects of preanalytical lipid-extraction of skin and blubber biopsies were found for both 513C and <515N values. Chapter 5 is a methodological chapter, concluding that the amount of lipid remaining in blubber biopsies is not representative of blubber in situ. This finding was relevant to Chapter 6 which used POP concentrations to investigate elements of population structure of humpback whales in the North Atlantic. Chapter 7 discusses how the key findings such as the diet preferences of Celtic Sea fin whales (Euphausiids such as Meganyctiphanes norvegica and Nyctiphanes couchii, and year-0 sp ra t [Sprattus sprattus] and herring (Clupea harengusj) and humpback whales (chiefly sprat and herring) may be used to facilitate an informed ecosystem-based approach to fisheries management
On the ecology of rorqual whales (Balaenopteridae) in Irish waters using intrinsic markers
Get PDFDespite repeated calls for an ecosystem-based approach to the management of marine resources, little information exists on the ecosystem role and requirements of top predators such as baleen whales in Irish waters. Considering that they are long-lived and highly migratory, baleen whales such as rorquals (Family Balaenopteridae] are potentially useful bio-monitors of anthropogenic environmental change. However, their use as environmental indicators is precluded by an insufficient understanding of their basic ecology. Following centuries of whaling and other emerging threats to their survival including pollution, bycatch and ship-strikes, the conservation status of most rorqual species is difficult to assess due to a shortfall in our knowledge. This thesis aims to facilitate more informed management decision-making and the implementation of more effective conservation measures by bridging key gaps in our knowledge. Pertinent questions on feeding and migration ecology are addressed using intrinsic markers, i.e. chemicals whose stable properties ensure they move through biotic systems and are detectable in tissues. Intrinsic markers include naturally occurring [e.g. stable isotopes, DNA, trace elements] and anthropogenic compounds (e.g persistent organic pollutants or POPs]. In Chapter 1, current knowledge on the ecology of blue [Balaenoptera musculus], fin (R physalus), humpback (Megaptera novaengliae] and minke whales (Racutorostrata] in Irish waters is reviewed. In chapter 2, stable isotope analysis of baleen from these four species is used to approximate the ecological niche and thus to examine resource partitioning. Chapter 3 is a methodological precursor to Chapter 4 where stable isotope\ud
Bayesian mixing models are used to investigate the preferred diet of fin and humpback whales in the Celtic Sea. In Chapter 3, unpredictable effects of preanalytical lipid-extraction of skin and blubber biopsies were found for both 513C and <515N values. Chapter 5 is a methodological chapter, concluding that the amount of lipid remaining in blubber biopsies is not representative of blubber in situ. This finding was relevant to Chapter 6 which used POP concentrations to investigate elements of population structure of humpback whales in the North Atlantic. Chapter 7 discusses how the key findings such as the diet preferences of Celtic Sea fin whales (Euphausiids such as Meganyctiphanes norvegica and Nyctiphanes couchii, and year-0 sp ra t [Sprattus sprattus] and herring (Clupea harengusj) and humpback whales (chiefly sprat and herring) may be used to facilitate an informed ecosystem-based approach to fisheries management
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
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