1,721,004 research outputs found
Morphometric measurements of Lamellodiscus haptoral parts
No full text<p>List of measurements of 147 parasites individuals (size of haptor and reproductive organs, in tenth of millimeters). For an explanation of the measurements, refer to Fig. 1 in</p>
<p>Timothée Poisot, Yves Desdevises (2010) Putative speciation events in <em>Lamellodiscus</em> (Monogenea: Diplectanidae) assessed by a morphometric approach. <em>Biological Journal of the Linnean Society</em> 99 (3) 559-569.</p
Phylogeny of several <i>Lamellodiscus</i> species obtained by maximum likelihood and Bayesian inference.
No full text<p>As topologies obtained with both reconstruction methods gave congruent topologies and similar branch lengths, the most resolved tree, obtained by maximum likelihood, was retained and is presented here. Bootstrap values (1000 replicates) and posterior probabilities (>0.5. Dashes correspond to values <0.5) are indicated at each node. The clusters of individuals for which the alignment of ITS1 was possible are outlined in grey boxes. Thick black lines indicate ergensi and ignoratus groups.</p
Mean pairwise distances for the 641 bp long fragment of the 18S ribosomal DNA in several monogenean taxa.
No full text<p>See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026252#pone-0026252-t001" target="_blank">Table 1</a> for legend. The group formed by <i>L. ignoratus</i> s.l. (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026252#pone-0026252-g001" target="_blank">Figure 1</a>) was given the status of litu <i>sensu</i> Pleijel and Rouse <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026252#pone.0026252-Pleijel1" target="_blank">[62]</a>.</p
Mean pairwise distances (m.p.d.) for the 245 bp long fragment of the <i>COI</i> gene in several monogenean taxa.
No full text<p>Legend for column Order: P is for Polyopisthocotylea, M for Monopisthocotylea. m.p.d: mean of pairwise distances. Species for which at least 3 sequences were available were included in the analysis.</p
<i>Bdellovibrio</i> and like organisms: current understanding and knowledge gaps of the smallest cellular hunters of the microbial world
No full textAlmost sixty years ago, Bdellovibrio and like organisms (BALOs) were discovered as the first obligate bacterial predators of other bacteria known to science. Since then, they were shown to be diverse and ubiquitous in the environment, and to bear astonishing ecological, physiological, and metabolic capabilities. The last decade has seen important strides made in understanding the mechanistic basis of their life cycle, the dynamics of their interactions with prey, along with significant developments towards their use in medicine, agriculture, and industry. This review details these achievements, identify current understanding and knowledge gaps to encourage and guide future BALO research.</p
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
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