1,721,013 research outputs found
FIGURE 1 in Fragilaria odeloucaensis sp. nov. (Bacillariophyta, Fragilariaceae) a diatom from temporary streams in southern Portugal
No full textFIGURE 1. Location of type locality, Odelouca Stream, in southern Portugal. Black dot denotes the type locality: Odelouca Stream, Monchique Council, Algarve region. Open circle corresponds to St. Pedro stream in the Center Region of Portugal.Published as part of Morales, Eduardo A., Novais, Maria Helena, Wetzel, Carlos E., Ector, Luc & Morais, Maria Manuela, 2022, Fragilaria odeloucaensis sp. nov. (Bacillariophyta, Fragilariaceae) a diatom from temporary streams in southern Portugal, pp. 217-230 in Phytotaxa 555 (3) on page 219, DOI: 10.11646/phytotaxa.555.3.1, http://zenodo.org/record/691103
FIGURES 68–73 in Planothidum audax sp. nov. (Bacillariophyta, Achnanthidiaceae), a new diatom from temporary streams in southern Portugal
No full textFIGURES 68–73. SEM images of Planothidium audax sp. nov. from type material BR-4663, Limas Stream, Portugal (68, 70–73) and Maria Delgada Stream (69). 68. External view of RV. Notice slightly deflected terminal raphe ends in the same direction and opposite proximal raphe ends. 69. Internal view of RV showing central and polar nodules. Notice slightly deflected proximal raphe ends. 70. External view of SV. 71. Internal view of SV. 72. Close up on striae as seen in external view on SV showing hymenate occlusions of the areolae. 73. Close up on striae as seen in internal view on SV showing hymenate occlusions. Scale bar: 0.25 µm (Fig. 72), 0.5 µm (Fig. 73), 1 µm (Figs 68–71).Published as part of Morales, Eduardo A., Novais, Maria Helena, García, María Luján, Maidana, Nora I. & Morais, Maria Manuela, 2021, Planothidum audax sp. nov. (Bacillariophyta, Achnanthidiaceae), a new diatom from temporary streams in southern Portugal, pp. 288-294 in Phytotaxa 510 (3) on page 290, DOI: 10.11646/phytotaxa.510.3.9, http://zenodo.org/record/542647
FIGURES 1–67 in Planothidum audax sp. nov. (Bacillariophyta, Achnanthidiaceae), a new diatom from temporary streams in southern Portugal
No full textFIGURES 1–67. LM images of Planothidium spp. from two temporary streams in southern Portugal. 1–26. P. audax sp. nov. from type material BR-4663, Limas Stream, Portugal, pool collected on 20th September 2017 (Figures 1–9 RV, 10–18 SV, 19–26 paired valves of 4 individuals are shown, 21–22 correspond to the holotype). 27–28. RV and SV of two different specimens from Limas Stream, Portugal, dry biofilm collected on 19th February 2018. 29–34. Specimens from Limas Stream, Portugal, pool collected on 6th June 2018 (Figures 29–30 RV, 31–34 SV). 35–40. Valves from Limas Stream, Portugal, pool collected on 27th July 2018 (Figures 35–36 RV, 37–40 SV). 41–46. Population found in Maria Delgada Stream, Portugal, pool collected on 19th September 2017 (paired valves of three different specimens are presented). 47. Single RV valve found in Maria Delgada Stream. Portugal, pool collected on 28th May 2018 and representing the smallest valve found for the new species. 48–67. Other Planothidium species found in type material BR-4663, Limas Stream, Portugal (48–53 P. minutissimum, 54–57 paired valves of two specimens of P. rostratoholarcticum, 58–63 P. victorii, including paired valves of two complete frustules, 64–66 P. engelbrechtii, first two paired valves correspond to the same frustule, and 67 P. lanceolatum, single RV). Scale bar: 10 µm.Published as part of Morales, Eduardo A., Novais, Maria Helena, García, María Luján, Maidana, Nora I. & Morais, Maria Manuela, 2021, Planothidum audax sp. nov. (Bacillariophyta, Achnanthidiaceae), a new diatom from temporary streams in southern Portugal, pp. 288-294 in Phytotaxa 510 (3) on page 289, DOI: 10.11646/phytotaxa.510.3.9, http://zenodo.org/record/542647
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
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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