1,721,123 research outputs found
First record of Gauguin's blunt-nose lizardfish, Trachinocephalus gauguini Polanco, Acero & Betancur 2016 (Teleostei: Synodontidae) outside the Marquesas Archipelago
No full textWang, Shih-Yu, Chen, Jhen-Nien, Russell, Barry C., Chen, Wei-Jen (2018): First record of Gauguin's blunt-nose lizardfish, Trachinocephalus gauguini Polanco, Acero & Betancur 2016 (Teleostei: Synodontidae) outside the Marquesas Archipelago. Zootaxa 4476 (1): 151-156, DOI: 10.11646/zootaxa.4476.1.1
FIGURE 2 in First record of Gauguin's blunt-nose lizardfish, Trachinocephalus gauguini Polanco, Acero & Betancur 2016 (Teleostei: Synodontidae) outside the Marquesas Archipelago
No full textFIGURE 2. Distribution records of Trachinocephalus gauguini. Circle, occurrence described in Polanco et al. (2016); triangle, new record from Papua New Guinea (this study).Published as part of Wang, Shih-Yu, Chen, Jhen-Nien, Russell, Barry C. & Chen, Wei-Jen, 2018, First record of Gauguin's blunt-nose lizardfish, Trachinocephalus gauguini Polanco, Acero & Betancur 2016 (Teleostei: Synodontidae) outside the Marquesas Archipelago, pp. 151-156 in Zootaxa 4476 (1) on page 155, DOI: 10.11646/zootaxa.4476.1.14, http://zenodo.org/record/144041
A new phase of land-atmosphere interactions in the East Asian Jet variability during summer
No full textThe East Asian Jet (EAJ), a key upper-level westerly wind that controls monsoon circulation and precipitation patterns within the East Asian summer monsoon system, has undergone multiple regime shifts since the mid-20th century. While transitions in the late-1970s and mid-1990s are well documented, a more recent shift in the early 2000s remains less well characterized. Here we identify a regime shift of the EAJ occurring in 2002/2003 through striking changes, manifested by an abrupt intensification in both the mean state and interannual variance of the jet. This shift coincides with significant surface warming over southern China and widespread drying across East Asia. Our analysis identifies two key features characterizing this transition: strengthening of the Tibetan Plateau High (TPH) and emergence of enhanced SM-T coupling variability over Inner East Asia. After 2003, coupling strength exhibits significant correlation with surface energy partitioning and lower-tropospheric thermal structure. This coupling variability is closely linked to jet fluctuations, indicating that enhanced jet variability is strongly mediated by land-atmosphere (L-A) coupling processes. In addition, the intensified TPH additionally contributes to jet intensification through modifications in upper-tropospheric circulation patterns. These results highlight the critical role of L-A interactions in EAJ variability and provide insights into potential linkages between drought conditions under global warming and monsoon circulation changes mediated through upper-level atmospheric flow.
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
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