1,721,069 research outputs found
FIGURE 3 in Revision of Dimelaena Norman (Caliciaceae, Ascomycota) species containing usnic acid reveals a new species and a new combination from China
No full textFIGURE 3. Morphology and anatomy of Dimelaena altissima (18-58855, KUN). A. Thallus of Dimelaena altissima. B. Straight and plane lobes of radiate-plicate margin. C. Cryptolecanorine apothecia. D. Section of apothecium. E. Buellia-type ascospores, constricted at septum. F. Bacidia-type ascus-apex. Scale bars: 1 mm (A, B); 0.5 mm (C); 25 μm (E); 5 μm (E, F).Published as part of Ai, Min, Zhong, Qiuyi, Scheidegger, Christoph, Wang, Lisong & Wang, Xinyu, 2022, Revision of Dimelaena Norman (Caliciaceae, Ascomycota) species containing usnic acid reveals a new species and a new combination from China, pp. 259-272 in Phytotaxa 574 (4) on page 266, DOI: 10.11646/phytotaxa.574.4.1, http://zenodo.org/record/738905
FIGURE 4 in Revision of Dimelaena Norman (Caliciaceae, Ascomycota) species containing usnic acid reveals a new species and a new combination from China
No full textFIGURE 4. Morphology and anatomy of Dimelaena oreina (18-59460, KUN). A. Thallus of Dimelaena oreina. B. Convex non-linear lobes of radiate-plicate margin. C. Cryptolecanorine apothecia. D. Darkened margin around the areolae. E. Section of apothecium. F. Buellia-type ascospores, constricted at septum. G. Typical Bacidia-type ascus-apex. Scale bars: 1 mm (A, B); 0.5 mm (C, D); 25 μm (E); 5 μm (F, G).Published as part of Ai, Min, Zhong, Qiuyi, Scheidegger, Christoph, Wang, Lisong & Wang, Xinyu, 2022, Revision of Dimelaena Norman (Caliciaceae, Ascomycota) species containing usnic acid reveals a new species and a new combination from China, pp. 259-272 in Phytotaxa 574 (4) on page 267, DOI: 10.11646/phytotaxa.574.4.1, http://zenodo.org/record/738905
The Red data list of Swiss Macrolichens
No full textA preliminary list of 152 threatened macrolichens in Switzerland (37% ofthe Swiss flora) is presented. 13 taxa (9% ofthe total amount of species comprised in the Red data list) are considered to be extinct, 35 (23%) strongly endangered, 25 (16%) endangered, 45 (30%) vulnerable and 34 (22%) rare. The following species: Cetraria oakesiana, C. sepincola, Lobaria amplissima, L. scrobiculata, Nephroma bellum, Pannaria conoplea, Parmelia arnoldii, P. sinuosa, P. stuppea, Peltigera venosa, Ramalina obtusata, R. roesleri, R. thrausta, Sticta fuliginosa, S. sylvatica et Usnea longissima are comprised in the Red data lists of Austria, Germany and the European Community. They are considered to be threatened in their entire distribution area in Europe. Therefore they and their habitats should be protected in priority. The possibilities of protecting them are briefly discussed
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
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