1,721,289 research outputs found
Fig. 2 in Echiodon prionodon, a new species of Carapidae (Pisces, Ophidiiformes) from New Zealand
No full textFig. 2. Echiodon prionodon sp. nov., left lateral view of the left premaxillary fang showing the posterior serrated margin.Published as part of Parmentier, Eric, 2012, Echiodon prionodon, a new species of Carapidae (Pisces, Ophidiiformes) from New Zealand, pp. 1-8 in European Journal of Taxonomy 31 on page 4, DOI: 10.5852/ejt.2012.31, http://zenodo.org/record/385852
A primer on rhythm quantification for fish sounds: a Mediterranean case study
Full text linkpeer reviewedWe have used a lately established workflow to quantify
rhythms of three fish sound types recorded in different areas
of the Mediterranean Sea. So far, the temporal structure of
fish sound sequences has only been described qualitatively.
Here, we propose a standardized approach to quantify them,
opening the path for assessment and comparison of an often
underestimated but potentially critical aspect of fish sounds.
Our approach is based on the analysis of inter-onset-intervals
(IOIs), the intervals between the start of one sound element
and the next. We calculate exact beats of a sequence using
Fourier analysis and IOI analysis. Furthermore, we report on
important parameters describing the variability in timing
within a given sound sequence. Datasets were chosen to
depict different possible rhythmic properties: Sciaena umbra
sounds have a simple isochronous—metronome-like—
rhythm. The /Kwa/ sound type emitted by Scorpaena spp.
has a more complex rhythm, still presenting an underlying
isochronous pattern. Calls of Ophidion rochei males present
no rhythm, but a random temporal succession of sounds.
This approach holds great potential for shedding light on
important aspects of fish bioacoustics. Applications span
from the characterization of specific behaviours to the
potential discrimination of yet not distinguishable specie
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
Figure 1 in First use of acoustic calls to distinguish cryptic members of a fish species complex
No full textFigure 1. Background shading indicates the geographical distribution of the three populations (Liu et al., 2014) from the Dascyllus aruanus complex. A, in each geographical area, dots correspond to sampling locations. B, scatterplot of principal component PC1 versus PC2, performed with individual mean values of the six acoustic properties of calls corresponding to the signal jump for the three suggested species: D. abudafur (blue ●), D. aruanus (turquoise +) and D. emamo (pink▲). Ellipses correspond to 90% of the observations, dots correspond to the ellipse centra.Published as part of Parmentier, Eric, Scalbert, Robin, Raick, Xavier, Gache, Camille, Frédérich, Bruno, Bertucci, Frédéric & Lecchini, David, 2022, First use of acoustic calls to distinguish cryptic members of a fish species complex, pp. 964-975 in Zoological Journal of the Linnean Society 195 (3) on page 969, DOI: 10.1093/zoolinnean/zlab056, http://zenodo.org/record/675855
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
- …
