1,720,973 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
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
Approche comparative des communautés piscicoles lacustres
No full textThe objective of this thesis was to investigate fish community patterns in the lakes of Franceand northeast USA in order to infer the underlying processes. This was achieved using amacroecological approach. Fish communities displayed patterns of addition and replacementof species along environmental gradients related to the lakes' local features and geographiclocation. The structuring role of biotic interactions was not demonstrated. Human-mediatedspecies introductions clearly perturb the relation of local vs. regional species richnesses. Landuse in the lakes' catchments appears to modify guild community structure. The response ofcommunity structure along gradients of temperature and lake size displayed convergencebetween the lakes of France and northeast USA, thereby indicating that that the availabilityof spawning substrates exerts a strong constraint on local communities. These results allowinferring the potential effect of global warming on lake fish communities. Complementarystudies of assembly rules and metacommunity processes should be fruitful for both basic andapplied ecology.L'objectif de cette thèse est de préciser les patrons de variabilité des communautés piscicolesentre les plans d'eau en vue de contribuer à la compréhension des mécanismes qui en sontresponsables, qu'ils soient naturels ou conséquences des activités de l'Homme. Cetteapproche macroécologique des peuplements en France et dans le nord-est des Etats-Unis amontré des patrons d'addition et de remplacement d'espèces en fonction des caractéristiquesabiotiques locales et de la position géographique des plans d'eau. Le rôle structurant desinteractions biotiques est moins évident. Les introductions d'espèces modifient radicalementla relation entre richesses locales et régionales alors que l'occupation agricole et urbaine desbassins versants entraîne des modifications de la structure en guildes des communautés. Laconvergence observée dans la réponse des communautés aux conditions climatiques et à lataille du plan d'eau montre que la disponibilité des habitats de reproduction exerce unecontrainte forte sur les communautés locales et autorise quelques inférences sur lesconséquences du changement climatique global. L'étude des règles d'assemblage et uneréflexion relative au fonctionnement de métacommunautés à l'échelle des bassins versantsoffrent des perspectives sur les plans scientifique et appliqués
Approche comparative des communautés piscicoles lacustres
No full textThe objective of this thesis was to investigate fish community patterns in the lakes of Franceand northeast USA in order to infer the underlying processes. This was achieved using amacroecological approach. Fish communities displayed patterns of addition and replacementof species along environmental gradients related to the lakes' local features and geographiclocation. The structuring role of biotic interactions was not demonstrated. Human-mediatedspecies introductions clearly perturb the relation of local vs. regional species richnesses. Landuse in the lakes' catchments appears to modify guild community structure. The response ofcommunity structure along gradients of temperature and lake size displayed convergencebetween the lakes of France and northeast USA, thereby indicating that that the availabilityof spawning substrates exerts a strong constraint on local communities. These results allowinferring the potential effect of global warming on lake fish communities. Complementarystudies of assembly rules and metacommunity processes should be fruitful for both basic andapplied ecology.L'objectif de cette thèse est de préciser les patrons de variabilité des communautés piscicolesentre les plans d'eau en vue de contribuer à la compréhension des mécanismes qui en sontresponsables, qu'ils soient naturels ou conséquences des activités de l'Homme. Cetteapproche macroécologique des peuplements en France et dans le nord-est des Etats-Unis amontré des patrons d'addition et de remplacement d'espèces en fonction des caractéristiquesabiotiques locales et de la position géographique des plans d'eau. Le rôle structurant desinteractions biotiques est moins évident. Les introductions d'espèces modifient radicalementla relation entre richesses locales et régionales alors que l'occupation agricole et urbaine desbassins versants entraîne des modifications de la structure en guildes des communautés. Laconvergence observée dans la réponse des communautés aux conditions climatiques et à lataille du plan d'eau montre que la disponibilité des habitats de reproduction exerce unecontrainte forte sur les communautés locales et autorise quelques inférences sur lesconséquences du changement climatique global. L'étude des règles d'assemblage et uneréflexion relative au fonctionnement de métacommunautés à l'échelle des bassins versantsoffrent des perspectives sur les plans scientifique et appliqués
aspe: An R Package to Analyse and Visualise River Fish Data in France
No full textThe aspe package provides a suite of tools for most of the common processing of the ASPE database , including importation of the tables from a dump of the PostGreSQL database, calculation of abundances, densities, size distributions, along with graphical output and spatial processing.To cite package "aspe" in publications use
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