1,721,023 research outputs found
Tanymastigites lusitanica sp. nov. (Crustacea: Branchiopoda: Anostraca) from Portugal, first representative of the genus in Europe
No full textMachado, Margarida, Sala, Jordi (2013): Tanymastigites lusitanica sp. nov. (Crustacea: Branchiopoda: Anostraca) from Portugal, first representative of the genus in Europe. Zootaxa 3681 (5): 501-523, DOI: 10.11646/zootaxa.3681.5.
FIGURE 9 in Tanymastigites lusitanica sp. nov. (Crustacea: Branchiopoda: Anostraca) from Portugal, first representative of the genus in Europe
No full textFIGURE 9. Tanymastigites lusitanica sp. nov., male. A, left mandible. B. left mandible, anterior tip. C, left mandible, dorsal margin at medial third. D, right mandible. E, detail of D, showing the posterior tip of right mandible. F, detail of D, showing the anterior tip of right mandible.Published as part of Machado, Margarida & Sala, Jordi, 2013, Tanymastigites lusitanica sp. nov. (Crustacea: Branchiopoda: Anostraca) from Portugal, first representative of the genus in Europe, pp. 501-523 in Zootaxa 3681 (5) on page 515, DOI: 10.11646/zootaxa.3681.5.1, http://zenodo.org/record/21634
Tanymastigites Brtek 1972
No full textGenus Tanymastigites Brtek, 1972 Tanymastix Daday, 1910 (partim); Gauthier, 1928 b Tanymastigites Brtek, 1972 Clypeus arch-shaped, about 1 / 2 – 2 / 3 of the basal parts of the male antennae, equipped with a pair of large, strongly sclerotized, subtrapezoidal ventral processes each with a knob-like dorsal protuberance. When present, frontal clypeal processes flattened and broad, in dorsal view partly hidden by antennal appendages. Basal part of penis with large triangular proximal process, distally pointing to medial side, set with spinules on medial margin. Small medial spur inserted about halfway along the basal part of penis. Evaginable distal part of penis elongated, apically slightly inflated, with one medial row of strong conical spines, and other isolated spines. Several distal spines possible. Sexual dimorphism in the shape of the foremost endopodites of thoracopods. Adult males with some of the foremost endopodites, mainly those of the 3 rd and the 4 th pair of thoracic limbs, presenting a more or less pronounced narrow distomedial subtriangular projection; adult females with the foremost endopodites homonomous with those of the rest of the thoracopods. Brood pouch elongated and fusiform, without ventral thorns. Cysts spherical.Published as part of Machado, Margarida & Sala, Jordi, 2013, Tanymastigites lusitanica sp. nov. (Crustacea: Branchiopoda: Anostraca) from Portugal, first representative of the genus in Europe, pp. 501-523 in Zootaxa 3681 (5) on page 520, DOI: 10.11646/zootaxa.3681.5.1, http://zenodo.org/record/21634
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
Onuphis
No full textKey to species of Onuphis present in European and nearby waters: (Adapted from: Fauchald 1982 b, Gil 2011) 1 All branchiae simple and strap-like........................................................................ 2 - Branchiae bifid or pectinate............................................................................. 4 2 Branchiae from chaetiger 1; pseudocompound hooks all tridentate; ventral cirri cirriform on the first 5–7 chaetigers; cirriform postchaetal lobes distinct on the first 10–13 chaetigers........................................................ 3 - Branchiae from chaetiger 5; pseudocompound hooks bi– and tridentate; ventral cirri cirriform on the first 4 chaetigers; cirriform postchaetal lobes distinct on the first 16–33 chaetigers in adults............................................................................................... Onuphis farensis sp. nov. (Gulf of Cádiz, SW Iberian Peninsula) 3 Maxillary formula: MI: 1 + 1, MII: 8-9 + 8, MIII: 9-10 +0, MIV: 5-6 + 5, MV: 1 + 1.................. O. opalina (SE Iceland) - Maxillary formula: MI: 1 + 1, MII: 6-8 + 8-9, MIII: 7-8 +0, MIV: 7-9 + 9-11, MV: 1 + 1....... O. rullieriana (SW British Isles) 4 Branchiae pectinate, with up to 5–7 branchial filaments (first 15–20 chaetigers with simple branchiae)................. 5 - Branchiae bifid (first 20–25 chaetigers with simple branchiae); ventral cirri cirriform on the first 3–4 chaetigers; digitiform postchaetal lobes disappearing at chaetiger 7–8....................... O. falesia (Gulf of Follonica, Mediterranean Sea) 5 Tridentate pseudocompound hooks present on the first 3 chaetigers; branchiae pectinate, with up to 6–7 branchial filaments (first 18–20 chaetigers with simple branchiae); ventral cirri cirriform on the first 6 chaetigers; digitiform postchaetal lobes distinct in at least 60 chaetigers............................. O. eremita (European Atlantic coast and Mediterranean Sea) - Bi – and tridentate pseudocompound hooks present on the first 2 chaetigers; branchiae pectinate, with up to 5–6 branchial filaments (first 15 chaetigers with simple branchiae); ventral cirri cirriform present from the first chaetiger, but total number unknown; digitiform postchaetal lobes present from the first chaetiger, but total number unknown...................................................................................... O. pancerii (Naples region, Mediterranean Sea)Published as part of Gil, João & Machado, Margarida, 2014, A new species of Onuphis (Polychaeta: Onuphidae) from Southern Portugal, with comments on the validity of O. pancerii Claparède, 1868, pp. 343-360 in Zootaxa 3860 (4) on page 358, DOI: 10.11646/zootaxa.3860.4.3, http://zenodo.org/record/22967
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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