1,721,010 research outputs found
Fig. 7 in What Have Been and What Can Be Delimited as Species Using Molecular Data Under the Multi-Species Coalescent Model? A Case Study Using Hercules beetles (Dynastes; Dynastidae)
No full textFig. 7. Results of the BPP analyses (4). The split probability estimated for nodes representing within-species population subdivisions using 20 (white) and 50 (gray) random loci with different levels of sequence variabilities.Published as part of Huang, Jen-Pan, 2018, What Have Been and What Can Be Delimited as Species Using Molecular Data Under the Multi-Species Coalescent Model? A Case Study Using Hercules beetles (Dynastes; Dynastidae), pp. 1-10 in Insect Systematics and Diversity 2 (2018) on page 8, DOI: 10.1093/isd/ixy003, http://zenodo.org/record/455175
Figure 3. Results from macroevolutionary cohort analysis. A in The great American biotic interchange and diversification history in Dynastes beetles (Scarabaeidae; Dynastinae)
No full textFigure 3. Results from macroevolutionary cohort analysis. A correlation matrix based on speciation rates between tip lineages of the phylogeny is plotted, where each correlation is a posterior frequency that the two compared species are found in the same macroevolutionary rate regime. A darker colour represents a higher correlation than a lighter colour. The correlation between any two species can be found by locating their intersection in the matrix.Published as part of Huang, Jen-Pan, 2016, The great American biotic interchange and diversification history in Dynastes beetles (Scarabaeidae; Dynastinae), pp. 88-96 in Zoological Journal of the Linnean Society 178 (1) on page 92, DOI: 10.1111/zoj.12393, http://zenodo.org/record/489079
Figure 1 in Isolation by geographical distance after release from Pleistocene refugia explains genetic and phenotypic variation in Xylotrupes siamensis (Coleoptera: Scarabaeidae)
No full textFigure 1. Different male horn phenotypes in Xylotrupes siamensis. Left panels show exemplars of males of the Tonkinensis (short horn) phenotypes and right panels the Siamensis (long horn with a cephalic horn denticle) phenotype. Samples from the CLAOS population (for details, see Table 1; Fig. 2) exhibit intermediate horn length, and the major males have the cephalic horn denticle.Published as part of Morgan, Brett & Huang, Jen-Pan, 2021, Isolation by geographical distance after release from Pleistocene refugia explains genetic and phenotypic variation in Xylotrupes siamensis (Coleoptera: Scarabaeidae), pp. 117-129 in Zoological Journal of the Linnean Society 192 (1) on page 119, DOI: 10.1093/zoolinnean/zlaa106, http://zenodo.org/record/530115
Figure 3 in Isolation by geographical distance after release from Pleistocene refugia explains genetic and phenotypic variation in Xylotrupes siamensis (Coleoptera: Scarabaeidae)
No full textFigure 3. Phylogenetic networks of the three analysed loci and three historical scenarios explaining the origin of the CLAOS population tested using the DIYABC program. The colour of each individual shown in the network corresponds to the taxonomic assignment colour in the DIYABC analysis. Scenario 2 was the most likely model selected by the program (~60% posterior support), and scenario 1 also received moderate support (~30% posterior support). Results of posterior support among scenarios and model checking, in addition to the estimated parameter values (population sizes and divergence times), can be found in the Supporting Information (Figs S3–S8).Published as part of Morgan, Brett & Huang, Jen-Pan, 2021, Isolation by geographical distance after release from Pleistocene refugia explains genetic and phenotypic variation in Xylotrupes siamensis (Coleoptera: Scarabaeidae), pp. 117-129 in Zoological Journal of the Linnean Society 192 (1) on page 122, DOI: 10.1093/zoolinnean/zlaa106, http://zenodo.org/record/530115
Figure 1 in The great American biotic interchange and diversification history in Dynastes beetles (Scarabaeidae; Dynastinae)
No full textFigure 1. Results from BAMM and LAGRANGE analyses. Branch colour represents estimated speciation rate, where a warmer colour indicates a faster rate. A red dot on the branch leading to subgenus Dynastes indicates a speciation rate shift event. Black and white squares denote geographic states of South and North America, respectively. The black and white squares located on branches denote the reconstructed ancestral geographic area, whereas the black and white squares next to the taxon abbreviations indicate current geographic states (note that the reconstructed ancestral state for the common ancestor of subgenus Dynastes can be either South America or widespread). White triangles indicate inferred dispersal events into North America. A grey shaded area indicates the time frame when the Isthmus of Panama was completely formed (3.4–3.6 Mya). Representative samples of Dynastes neptunus (subgenus Theogenes) and Dynastes hercules ecuatorianus (subgenus Dynastes) are shown with a scale bar of 1 cm.Published as part of Huang, Jen-Pan, 2016, The great American biotic interchange and diversification history in Dynastes beetles (Scarabaeidae; Dynastinae), pp. 88-96 in Zoological Journal of the Linnean Society 178 (1) on page 91, DOI: 10.1111/zoj.12393, http://zenodo.org/record/489079
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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