1,721,005 research outputs found
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
The Ralstonia solanacearum species complex in the age of epidemiology: exploration of its molecular diversity and population structure
No full textSource Agritrop Cirad (https://agritrop.cirad.fr/607858/)International audienceLong-distance traveling of human beings and movement of goods drastically increase over time in relation with globalization of trade and exchanges, and so is the spread of bacterial pathogens and associated infectious diseases across the globe. Key for improved disease control lies into acquiring a thorough knowledge on factors shaping pathogen populations at fine scales and how they interact with their environment. In order to show much more clearly how infectious agents are spreading and evolving than sequence data alone, phylogenetic and epidemiological techniques are often use. Bacterial lineage-centered molecular genotyping techniques, such as multilocus variable number of tandem repeats analysis (MLVA), or whole genome sequencing (WGS) techniques are of interest especially when they provide high throughput, a sound phylogenetic signal, and a resolution fitting the spatiotemporal scale investigated. In the case of complex plant pathogen, such as the Ralstonia solanacearum species complex (RSSC), several studies achieved molecular characterization of outbreak strains during the last decade mostly using multiplex PCR phylotyping, egl partial sequencing, multilocus sequence typing (MLST), MLVA and WGS. Nevertheless, selecting proper genetic marker and analytical algorithm is vital to apply molecular genetics in a given biological population. Because phylogenetic analysis is inexpensive, especially when sequence data are already available, it is important for molecular epidemiologists to understand, to correctly apply, and to correctly interpret phylogenies and phylogenetic methods. We will then review some key concepts in phylogenetic applied on molecular data associated with the RSSC during this last decade
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
The Ralstonia solanacearum species complex in the age of epidemiology: exploration of its molecular diversity and population structure
Full text linkLong-distance traveling of human beings and movement of goods drastically increase over time in relation with globalization of trade and exchanges, and so is the spread of bacterial pathogens and associated infectious diseases across the globe. Key for improved disease control lies into acquiring a thorough knowledge on factors shaping pathogen populations at fine scales and how they interact with their environment. In order to show much more clearly how infectious agents are spreading and evolving than sequence data alone, phylogenetic and epidemiological techniques are often use. Bacterial lineage-centered molecular genotyping techniques, such as multilocus variable number of tandem repeats analysis (MLVA), or whole genome sequencing (WGS) techniques are of interest especially when they provide high throughput, a sound phylogenetic signal, and a resolution fitting the spatiotemporal scale investigated. In the case of complex plant pathogen, such as the Ralstonia solanacearum species complex (RSSC), several studies achieved molecular characterization of outbreak strains during the last decade mostly using multiplex PCR phylotyping, egl partial sequencing, multilocus sequence typing (MLST), MLVA and WGS. Nevertheless, selecting proper genetic marker and analytical algorithm is vital to apply molecular genetics in a given biological population. Because phylogenetic analysis is inexpensive, especially when sequence data are already available, it is important for molecular epidemiologists to understand, to correctly apply, and to correctly interpret phylogenies and phylogenetic methods. We will then review some key concepts in phylogenetic applied on molecular data associated with the RSSC during this last decade
The Ralstonia solanacearum species complex in the age of epidemiology: exploration of its molecular diversity and population structure
No full textSource Agritrop Cirad (https://agritrop.cirad.fr/607858/)International audienceLong-distance traveling of human beings and movement of goods drastically increase over time in relation with globalization of trade and exchanges, and so is the spread of bacterial pathogens and associated infectious diseases across the globe. Key for improved disease control lies into acquiring a thorough knowledge on factors shaping pathogen populations at fine scales and how they interact with their environment. In order to show much more clearly how infectious agents are spreading and evolving than sequence data alone, phylogenetic and epidemiological techniques are often use. Bacterial lineage-centered molecular genotyping techniques, such as multilocus variable number of tandem repeats analysis (MLVA), or whole genome sequencing (WGS) techniques are of interest especially when they provide high throughput, a sound phylogenetic signal, and a resolution fitting the spatiotemporal scale investigated. In the case of complex plant pathogen, such as the Ralstonia solanacearum species complex (RSSC), several studies achieved molecular characterization of outbreak strains during the last decade mostly using multiplex PCR phylotyping, egl partial sequencing, multilocus sequence typing (MLST), MLVA and WGS. Nevertheless, selecting proper genetic marker and analytical algorithm is vital to apply molecular genetics in a given biological population. Because phylogenetic analysis is inexpensive, especially when sequence data are already available, it is important for molecular epidemiologists to understand, to correctly apply, and to correctly interpret phylogenies and phylogenetic methods. We will then review some key concepts in phylogenetic applied on molecular data associated with the RSSC during this last decade
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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