1,722,225 research outputs found
Linked collectors and determiners for: Caracterización de fauna asociada a bosque seco tropical en la OMEC Las Guacharacas, municipio de Piojó, Atlántico.
No full textNatural history specimen data linked to collectors and determiners held within, "Caracterización de fauna asociada a bosque seco tropical en la OMEC Las Guacharacas, municipio de Piojó, Atlántico". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/f3ad97cc-6a18-4676-8867-10e17cd19514">https://bionomia.net/dataset/f3ad97cc-6a18-4676-8867-10e17cd19514</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/f3ad97cc-6a18-4676-8867-10e17cd19514">https://gbif.org/dataset/f3ad97cc-6a18-4676-8867-10e17cd19514</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: Rare and new East African leucosiid crabs.
No full textNatural history specimen data linked to collectors and determiners held within, "Rare and new East African leucosiid crabs". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/e0e210ad-4bfb-4e92-8867-0cd91864c185">https://bionomia.net/dataset/e0e210ad-4bfb-4e92-8867-0cd91864c185</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/e0e210ad-4bfb-4e92-8867-0cd91864c185">https://gbif.org/dataset/e0e210ad-4bfb-4e92-8867-0cd91864c185</a>. Formatted as a Frictionless Data package
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
Oxidative rearrangement of indoles to oxindoles
No full textAn unexpected oxidative rearrangement was observed when indoles substituted with 2-hydroxymalonates were subjected to typical iodination conditions. This unusual and unprecedented transformation is successful for a number of derivatives
Embedment of metal nanoparticles in GaAs and Si for plasmonic absorption enhancement in intermediate band solar cells
Full text linkThe high near-field enhancement occurring in the vicinity of metallic nanoparticles (MNPs) sustaining surface plasmons can only be fully exploited in photovoltaic devices if the MNPs are placed inside their semiconducting material, in the photoactive region. In this work an experimental procedure is studied to embed MNPs in gallium arsenide (GaAs) and silicon (Si), which can be applied to other semiconductor host materials. The approach consists in spin-coating colloidal MNPs dispersed in solution onto the substrate surface. Then a capping layer of the same material as the substrate is deposited on top to embed the MNPs in the semiconductor. The extinction spectra of silver (Ag) and gold (Au) MNPs embedded in GaAs and Si is modeled with Mie theory for comparison with optical measurements. This contribution constitutes the initial step towards the realization of quantum-dot intermediate band solar cells (QD-IBSC) with MN
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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