1,721,037 research outputs found
FIGURE 1 in Two new Phyllachora species in Southwest China
No full textFIGURE 1. Maximum likelihood phylogenetic tree based on three nuclear markers (LSU, ITS, SSU). Support values are ML bootstrap values based on 1000 replicates and posterior probabilities from a Bayesian analysis. Bootstrap values of ML BP> 50% are shown on the left, while values of Bayesian PP> 0.50 are shown on the right. Newly introduced species are in bold and red, followed by the host of the species behind its strain number.Published as part of Li, Jin-Chen, Wu, Hai-Xia & Song, Jia-Yu, 2023, Two new Phyllachora species in Southwest China, pp. 275-285 in Phytotaxa 578 (3) on page 279, DOI: 10.11646/phytotaxa.578.3.5, http://zenodo.org/record/752315
FIGURE 2 in Two new Phyllachora species in Southwest China
No full textFIGURE 2. Phyllachora xinpingensis (IFRD9465, holotype). a. Black spots on Chrysopogon aciculatus (Poaceae). b, c. Stromata. d. Vertical section of ascomata. e. Paraphyses. f–j. Asci (j in cotton blue). k–p. Ascospores (o in cotton blue, p with gelatinous sheath in ink). Scale bars: b = 1000 μm, c = 500 μm, d = 100 μm, e–j = 20 μm, k–p = 10 μm.Published as part of Li, Jin-Chen, Wu, Hai-Xia & Song, Jia-Yu, 2023, Two new Phyllachora species in Southwest China, pp. 275-285 in Phytotaxa 578 (3) on page 280, DOI: 10.11646/phytotaxa.578.3.5, http://zenodo.org/record/752315
FIGURE 3 in Two new Phyllachora species in Southwest China
No full textFIGURE 3. Phyllachora yuanjiangensis (IFRD9466, holotype). a. Black spots on Arundinella setosa (Poaceae). b, c. Stromata. d. Vertical section of ascomata. e. Paraphyses. f–i. Asci (i in cotton blue). j–m. Ascospores (l in cotton blue, m with gelatinous sheath in ink). Scale bars: c = 200 μm, d = 100 μm, e–j = 20 μm, k–m = 10 μm.Published as part of Li, Jin-Chen, Wu, Hai-Xia & Song, Jia-Yu, 2023, Two new Phyllachora species in Southwest China, pp. 275-285 in Phytotaxa 578 (3) on page 282, DOI: 10.11646/phytotaxa.578.3.5, http://zenodo.org/record/752315
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
Phyllachora Nitschke ex Fuckel 1870
No full textKey to species of Phyllachora recorded in China (2009–2022) 1. Parasitic on eudicots...................................................................................................................................................... P. hainanensis 1. Parasitic on monocots.........................................................................................................................................................................2 2. Parasitic on bamboo plants.................................................................................................................................................................3 2. Parasitic on graminicolous plants.......................................................................................................................................................4 3. Parasitic on Phyllostachys sp........................................................................................................................................ P. heteroclada 3. Parasitic on Dendrocalamus sp.........................................................................................................................................................5 4. Stromata on the upper leaf surface................................................................................................................................ P. isachnicola 4. Stromata on both sides of the leaf......................................................................................................................................................6 5. Parasitic on Dendrocalamus membranaceus....................................................................................... P. dendrocalami-membranacei 5. Parasitic on Dendrocalamus hamiltonii............................................................................................ P. dendrocalami-hamiltoniicola 6. Stromata surrounded by a pale yellow halo................................................................................................................ P. jianfengensis 6. Stromata not surrounded by a pale yellow halo.................................................................................................................................7 7. Stromata shiny black..........................................................................................................................................................................8 7. Stromata black....................................................................................................................................................................................9 8. Ascospores with a central concave depression................................................................................................................ P. panicicola 8. Ascospores with no central concave depression..............................................................................................................................10 9. Parasitic on Cenchrus sp.................................................................................................................................................................11 9. Parasitic on other graminicolous plants............................................................................................................................................12 10. Parasitic on Sphaerocaryum sp................................................................................................................................... P. sphaerocaryi 10. Parasitic on Chloris sp........................................................................................................................................................ P. virgatae 11. Asci 100 µm, ascospores> 12 µm............................................................................................................................... P. sandiensis 12. Ascospores oval to ellipse.................................................................................................................................................... P. jiaensis 12. Ascospores tear-shaped....................................................................................................................................................................13 13. Parasitic on Chrysopogon aciculatus........................................................................................................................... P. xinpingensis 13. Parasitic on Arundinella setosa................................................................................................................................ P. yuanjiangensisPublished as part of Li, Jin-Chen, Wu, Hai-Xia & Song, Jia-Yu, 2023, Two new Phyllachora species in Southwest China, pp. 275-285 in Phytotaxa 578 (3) on page 283, DOI: 10.11646/phytotaxa.578.3.5, http://zenodo.org/record/752315
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
- …
