1,720,974 research outputs found
Lenticellaria Simon, Logan & Mottequin, gen. nov.
No full textGenus Lenticellaria Simon, Logan & Mottequin, gen. nov. Type species: Lenticellaria gregoryi Simon, Logan & Mottequin sp. nov. Etymology. from the word “lenticel” a botanical term meaning a kind of pore present on the surface of the bark of trees. Lenticels may be streak-like in shape. This name is derived from the scaly ornamentation of the shell surface. Diagnosis. Micromorphic kraussinoid slightly wider than long, with dorsal valve external surface smooth and radial tuberculate ventral valve. External surface of the ventral valve densely ornamented with very small scales disposed in concentric lines. Loop bifurcate, extremely reduced to two sharp claws. Crura present. Cardinal process, hinge plates and descending branches absent.Published as part of Simon, Eric, Logan, Alan, Zuschin, Martin, Mainguy, Jerome & Mottequin, Bernard, 2016, Lenticellaria and Hillerella, new kraussinoid genera (Kraussinoidea, Brachiopoda) from Indo-Pacific and Red Sea waters: evolution in the subfamily Megerliinae, pp. 1-34 in Zootaxa 4137 (1) on page 14, DOI: 10.11646/zootaxa.4137.1.1, http://zenodo.org/record/26366
Hillerella Simon, Logan & Mottequin, gen. nov.
No full textGenus Hillerella Simon, Logan & Mottequin gen. nov. Type species Hillerella bisepta Simon, Logan & Mottequin sp. nov. Etymology. Named for Norton Hiller in recognition of his important studies on Recent kraussinoid brachiopods. Diagnosis. Micromorphic kraussinoid, wider than long, biconvex, tuberculate radial costae mainly on ventral valve; dorsal valve with less prominent costae; ventral valve interior with single central septum, dorsal valve without cardinal process or crura; floor of dorsal valve interior with two prominent subparallel septa directed posteriorly from loop towards the hinge line; loop consisting of an arch supported by two slightly divergent plates attached to valve floor. Diagnose. Brachiopode kraussinoïde micro-morphique, plus large que long, biconvexe; valve ventrale avec côtes radiales tuberculées; valve dorsale avec côtes moins proéminentes; valve ventrale avec septum central; valve dorsale sans processus cardinal ni crura; surface interne de la valve dorsale avec deux septa subparallèles proéminents dirigés postérieurement du brachidium jusqu’à la charnière; brachidium consistant en une arche supportée par deux plaques divergentes attachées à la surface interne de la valve. PLATE 11. Lenticellaria marerubris sp. nov. Material collected from the Red Sea, Gulf of Akaba, Dahab, by Martin Zuschin (NHMW) at a depth of 12 m. Size of the specimens indicated with scale bars. Fig. 1. Holotype. Articulated fully adult specimen opened for this study in order to illustrate the brachidium (NHMW 87192 / GP 247). 1 a: dorsal view showing the smooth dorsal valve with concentric growth lines and the wide amphithyrid foramen. This specimen is not distorted and has a nearly semicircular outline. 1 b: ventral view showing the tuberculated surface of the ventral valve. Radial rows of tubercles are clearly visible and between these rows an ornamentation made of many concentric lines of very small scales. 1 c: detailed view of the tubercles and scales of the same ventral valve. 1 d: lateral view. The beak is erect. The lateral commissure is sinuous. In this position the pointed tubercles and the scaly surface of the ventral valve are clearly visible. 1 e: detailed view of the lateral view. 1 f: anterior view. Anterior commissure is rectimarginate in this specimen. 1g: posterior view. The strong convexity of the dorsal side of the foramen is typical for all specimens investigated. 1 h: ventral view of the tuberculate dorsal valve showing the brachidium developing two claws supported by a pedestal. Short crura are visible. 1 i: internal anterior view of the dorsal valve showing the high pedestal, the two slender claws and the short crura. The crura are not supported by crural plates or thick crural ridges. 1 j: oblique lateral view. 1 k: oblique antero-lateral view. 1 l: detailed view of the short crura. Fig. 2. Paratype. Articulated fully adult specimen presented for illustrating the possibility of dorso-biconvex shell and distortion. (NHMW 87192 /GP 248). 2 a: dorsal view showing smooth dorsal valve and large amphithyrid foramen. Note the cordate outline for this specimen. 2 b: ventral view showing the radial rows of tubercles and the scaly surface of the valve. 2 c: lateral view showing the sinuous lateral commissure, the convex dorsal of the foramen and the spiny surface of the ventral valve. 2 d: anterior view. 2 e: posterior view. Fig. 3. Paratype. Articulated fully adult specimen used for illustrating a strongly distorted shell (NHMW 87192 /GP 249). 3 a: internal view of the tuberculate dorsal valve with brachidium. 3 b: detailed view of the external ventral valve ornamentation. 3 c: detail ventral view of the brachidium with its pedestal. 3 d: anterior view of the two claws of the brachidium. 3 e: detailed view of crura. Fig. 4. Paratype. Articulated fully adult specimen used for illustrating the details of the ventral valve ornamentation. (NHMW 87192 /GP 250). 4 a: detailed view of the spiny tubercles and of the very small scales on the surface. Fig. 5. Paratype (NHMW 87192 /GP 251). Articulated early juvenile specimen illustrating the ontogeny for this species. 5 a: internal view of the dorsal valve with the brachidium at early cucullate phase of development. The crura are just beginning to emerge. The commissural tuberculation of the valve is still reduced. 5 b: detailed view of the ventral valve ornamentation. The rows of tubercles and the scaly surface are already developed. 5 c: detailed ventral view of the brachidium. Note that the pedestal is already developed. 5 d: anterior view of the brachidium. 5 e: oblique lateral view of the brachidium. 5 f: detailed view of a crus in development (arrows). Fig. 6. Paratype. Articulated juvenile specimen illustrating later stage of the ontogeny (NHMW 87192 /GP 252). 6 a: internal view of the dorsal valve with the brachidium at a second stage of development. The resorption process of the posterior part of the cucullate structure is completed and claws in their first appearance are produced. 6 b: detailed view of the ventral ornamentation. 6 c: detailed anterior view of the brachidium. 6 d: detailed posterior view of the brachidium showing the resorption process when completed.Published as part of Simon, Eric, Logan, Alan, Zuschin, Martin, Mainguy, Jerome & Mottequin, Bernard, 2016, Lenticellaria and Hillerella, new kraussinoid genera (Kraussinoidea, Brachiopoda) from Indo-Pacific and Red Sea waters: evolution in the subfamily Megerliinae, pp. 1-34 in Zootaxa 4137 (1) on page 25, DOI: 10.11646/zootaxa.4137.1.1, http://zenodo.org/record/26366
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
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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