1,720,984 research outputs found
FIGURE 3 in Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis
No full textFIGURE 3. Devolia orientalis (T.C.Hsu) Li Bing Zhang, X.M.Zhou, Jian Jun Yang & Ralf Knapp.—A. Habit and habitat.—B. Habit.— C. Lower portion of plant.—D, F. Adaxial view of laminae. –E. Abaxial view of lamina (photo credit: Ralf Knapp).Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 32, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
FIGURE 4 in Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis
No full textFIGURE 4. Glabrigrammitis nuda (Tagawa) Li Bing Zhang, X.M.Zhou, Jian Jun Yang & Parris.—A. Habit and habitat.—B. Habit.—C. Lower portion of plant showing rhizome.—D. Adaxial view of sterile lamina.—E. Adaxial view of portion of fertile lamina.—F. Abaxial view of portion of lamina showing sori (photo credit: Ralf Knapp).Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 33, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
Devolia orientalis Li Bing Zhang, X. M. Zhou, Jian Jun Yang & Ralf Knapp 2023, comb. nov.
No full textDevolia orientalis (T.C.Hsu) Li Bing Zhang, X.M.Zhou, Jian Jun Yang & Ralf Knapp, comb. nov. Basionym: Oreogrammitis orientalis T.C.Hsu, Ferns Fern Allies Taiwan Second Suppl. 44. 2017. Type: China, Guangxi Zhuang Autonomous Region, Jinxiu Yao Autonomous County, Mt. Shengtang (ShengTangShan), 1800–1900 m, 2 April 2013, T.C.Hsu 6455 (holotype TAIF; isotypes AK, IBK, TAIF, TNM). This species occurs in Taiwan Island, Mainland China (Guangxi), and Japan (Knapp & Hsu, 2017).Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 34, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
FIGURE 2 in Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis
No full textFIGURE 2. Calligrammitis beddomeana (Alderw.) Parris, Sundue, Li Bing Zhang, X.M.Zhou & Ralf Knapp.—A, B. Habit and habitats.—C. Lower portion of plant.—D. Adaxial view of lamina.—E. Portion of lamina margin showing hairs.—F. Young shoot of leaf showing hairs.—G. Stipes.—H. Abaxial view of laminae showing sori.—I. Abaxial view of portion of lamina showing sori (photo credit: Ralf Knapp).Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 31, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
FIGURE 1 in Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis
No full textFIGURE 1. Simplified maximum likelihood phylogeny of the Asia-Pacific clade of grammitid ferns (Polypodiaceae) based on six plastid markers (atpB, rbcL, rps4, rps4-trnS, trnG-R, trnL & trnL-F). Values of maximum likelihood bootstrap support, Bayesian inference posterior probability, and maximum parsimony jackknife support are along/above the branches (Zhou et al. 2023). The genera in blue are newly described here.Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 29, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
Calligrammitis havilandii Parris, Sundue, Li Bing Zhang, X. M. Zhou & Ralf Knapp 2023, comb. nov.
No full textCalligrammitis havilandii (Baker) Parris, Sundue, Li Bing Zhang, X.M.Zhou & Ralf Knapp, comb. nov. Basionym: Polypodium havilandii Baker, Trans. Linn. Soc. London, Bot. 4(2): 253. 1894. Type: Malaysia. Sabah Kinabalu, March 1892, G.D. Haviland 1438 (holotype K000548235!) ≡ Grammitis havilandii (Baker) Copel., Gen. Filic. 211. 1947) ≡ Radiogrammitis havilandii (Baker) Parris, Gard. Bull. Singapore 58(2): 242. 2007 ≡ Oreogrammitis havilandii (Baker) Parris & Sundue, Phytotaxa 436(1): 48. 2020 = Polypodium multisorum Copel., Philipp. J. Sci., C Bot. 12(1): 61. 1917. Type: [Malaysia, Sabah] Mt Kinabalu, Paka Cave, Topping 1665 (lectotype MICH1190874!; designated by Parris, 1990; isotypes BM!, US!). This species occurs in Malaysia.Published as part of Yang, Jian-Jun, Parris, Barbara, Knapp, Ralf, Sundue, Michael, Zhang, Li-Bing & Zhou, Xin-Mao, 2023, Circumscription of the grammitid fern genus Oreogrammitis (Polypodiaceae) with the description of three new genera: Calligrammitis, Devolia, and Glabrigrammitis, pp. 28-36 in Phytotaxa 597 (1) on page 32, DOI: 10.11646/phytotaxa.597.1.4, http://zenodo.org/record/791877
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
- …
