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FIGURE 1 in New taxonomic treatment for Trichomanes parvulum Poir. and T. dregei Bosch (Hymenophyllaceae, Polypodiidae)
No full textFIGURE 1. Comparison of Cr. minutum, H. sibthorpioides, and the holotype of T. parvulum. A) Cr. minutum in situ, B) H. sibthorpioides in situ; C) and D), type material of T. parvulum P00065014 (C) and P00065015 (D) (blue arrows: reddish-brown fronds corresponding to fronds of H. sibthorpioides, now kept separate under P01190780 and P01190781; green arrow: hairless rhizome; red arrow: proliferations); E) Double proliferation on a frond of the type P00065015; F) greenish-grey frond cells; G) reddish-brown frond cells. C and D, scale = 1 cm; F and G, scale = 100 µm.Published as part of Dubuisson, Jean-Yves, Nivart, Adele, Senterre, Bruno & Rouhan, Germinal, 2021, New taxonomic treatment for Trichomanes parvulum Poir. and T. dregei Bosch (Hymenophyllaceae, Polypodiidae), pp. 119-125 in Phytotaxa 523 (1) on page 121, DOI: 10.11646/phytotaxa.523.1.9, http://zenodo.org/record/557206
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
Abrodictyum dregei Dubuisson & Rouhan 2021, comb. nov.
No full textAbrodictyum dregei (Bosch) Dubuisson & Rouhan, comb. nov., Fig. 2. Trichomanes dregei Bosch (1858: 372). Type citation: Hab. Cap. bon spei! Drège; Port Natal! Gueinbius. Type:— SOUTH AFRICA. Transkei, Lusikisiki, without date, J.F. Drège s.n. (lectotype S, S-P-18091!, 4 top specimens of the sheet only, here designated; isolectotypes BM, K, K000435631!, K000435632!). Remaining syntype:— SOUTH AFRICA. Port Natal, without date, W. Gueinzius s.n. (S, S-P-18090! 4 bottom specimens of the sheet only). Note:—The specimen B20 0106572 (B) may be eligible as an isolectotype following Roux (2009), but this specimen has not been retrieved. Roux (2009) also suspected the ‘holotype’ to be present at P, but we did not succeed in finding it, hence we designate here the S specimen as lectotype, in accordance with the note of Schelpe on the sheet (Fig. 2). In addition, the S specimen is better preserved than the K duplicates. The collector of the remaining syntype, cited as “Gueinbius” by van den Bosch, is likely a misspelling for Wilhelm Gueinzius, as correctly written on the herbarium sheet (Fig. 2); Wilhelm Gueinzius is known as a German naturalist who indeed collected in South Africa and precisely in Natal around 1841. = Trichomanes rigidum Sw. var. lugubre Christ (1901: 849). Type:— DEMOCRATIC REPUBLIC OF CONGO. Kisantu, without date, J.B. Gillet s.n. (holotype BR, BR 0000013468675!). = Trichomanes rigidum Sw. var. annobonense Brause (Brause & Hieronymus 1915: 378). Type:— EQUATORIAL GUINEA. Annobon Island: Summit of Santa Mina, 650 m, October 1911, G.W.J. Mildbraed 6700 (holotype B, BW 20 0093175!). = Abrodictyum pseudorigidum Bauret & Dubuisson (Dubuisson et al. 2016: 161), nom. illeg. superfl.. TYPE:— MADAGASCAR. Fianarantsoa: Ambatomboay, RNI d’Andringitra versant E, 40 km au Sud d’Ambalavao, sur les berges d’un affluent de la rivière Sahavatoy, 24 May 1995, F . Rakotondrainibe 2708 (holotype P, P00059914!).Published as part of Dubuisson, Jean-Yves, Nivart, Adele, Senterre, Bruno & Rouhan, Germinal, 2021, New taxonomic treatment for Trichomanes parvulum Poir. and T. dregei Bosch (Hymenophyllaceae, Polypodiidae), pp. 119-125 in Phytotaxa 523 (1) on pages 123-124, DOI: 10.11646/phytotaxa.523.1.9, http://zenodo.org/record/557206
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
La phytogéographie des forêts denses de Guinée Equatoriale, avec une attention particulière aux forêts de Nsork
No full textThree samples of Equato-Guinean rain forest have recently been studied under the project of CUREF (Conservación y Utilización Racional de los Ecosistemas Forestales de Guinea Ecuatorial). The rain forest of the Altos de Nsork region, in the eastern part of Equatorial Guinea, has been studied by the present author by 1 km long transects. The two other studies have been carried out by others at the rio Muni's estuary (southwestern part of the country) and in the Ndote reserve (central-western part). A total of 9970 trees with DBH ≥ 30 cm, belonging to 341 species determined at least to genus, were found on 93.5 ha. To take the vegetation variability of each site into account, a phytosociological table was established using TWINSPAN with twenty surveys of 160 × 10 m for DBH ≥ 10 cm trees, chosen in homogeneous parts of transect. The following species were found to be prominent in the zone near the coast: Desbordesia glaucescens, Calpocalyx heitzii, Alstonia congensis, Sacoglottis gabonensis, Anthostema aubryanum, Erythrophleum ivorense, Caloncoba glauca, Lophira alata, Croton oligandrus, etc. The species found to have a continental distribution included: Millettia laurentii, Sindoropsis letestui, Entandrophragma congoense, Celtis tessmannii, Dialium pachyphyllum, Dialium spp. Allanblackia floribunda, etc. Because of the abundance of these species, Nsork represents the most continental part of the lowerguinean atlantic region. The forests of the rio Muni' s estuary show a huge biodiversity because of their intermediate position and their rich habitat diversity.SCOPUS: cp.jinfo:eu-repo/semantics/publishe
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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