1,721,672 research outputs found
A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species
No full textSun, Chao, Li, Xu, Zhou, Wei, Li, Fenglian (2018): A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species. Zootaxa 4378 (1): 49-70, DOI: 10.11646/zootaxa.4378.1.
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
FIGURE 8. Garra rotundinasus. SWFC 1301021, 128.3 in A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species
No full textFIGURE 8. Garra rotundinasus. SWFC 1301021, 128.3 mm SL; Yunnan: Yingjiang: Tongbiguan: Daying-jiang, an upper tributary of the Irrawaddy River; dorsal, lateral, and ventral views.Published as part of Sun, Chao, Li, Xu, Zhou, Wei & Li, Fenglian, 2018, A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species, pp. 49-70 in Zootaxa 4378 (1) on page 60, DOI: 10.11646/zootaxa.4378.1.3, http://zenodo.org/record/116808
FIGURE 5. Garra bispinosa. SWFC 0103203, 80.9 in A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species
No full textFIGURE 5. Garra bispinosa. SWFC 0103203, 80.9 mm SL; Yunnan: Yingjiang: Nabang: Mulei-jiang, an upper tributary of the Irrawaddy River; dorsal, lateral, and ventral views.Published as part of Sun, Chao, Li, Xu, Zhou, Wei & Li, Fenglian, 2018, A review of Garra (Teleostei: Cypriniformes) from two rivers in West Yunnan, China with description of a new species, pp. 49-70 in Zootaxa 4378 (1) on page 56, DOI: 10.11646/zootaxa.4378.1.3, http://zenodo.org/record/116808
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
Using accessibility measures in urban bus network improvement: A case study of Southampton, UK
No full textThe current regulatory and planning environment means that road-based publictransport in UK urban areas outside London tends to be planned on a piecemeal basis, and there are often conflicts between the needs and priorities of operators, passengers and planners. In consequence, several local authorities are considering adopting an alternative regulatory environment using quality contracts, with a consequent shift towards centralized service planning. There are though no tools readily available to ensure this centralized service planning will lead to a situation which provides a better balance between the interests of the different stakeholders. This research therefore develops a practical optimization model to fill this gap, using Southampton as a case study to explore the potential improvements, including both route planning andfrequency setting, which could be achieved with centralized planning of bus networks using an adapted tabu search algorithm. The methodology of the improvement approach in this research is defined as a complex multi-objective problem, involves two objective functions: total social cost (which is a combination of operator cost, user cost and external cost) and accessibility levels. The accessibility measures, which integrates the evaluation the transport system with land use patterns, therefore are utilized in the decision-making process of transit network design, alongside the conventional objective function total social cost. The methodology described above has been shown to work well for the Southampton case study. While the methodology described here focuses on the UK context, and potentially could be applied equally well in other contexts around the world.<br/
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
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