1,720,981 research outputs found
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
Méthodologie d'exploitation de données non temporelles et temporelles issues d'une étude sur le système conducteur-vehicule-environnement (SCVE): application à la situation de suivi
No full textFor 15 years, more and more advanced driving assistance systems have equipped cars. These systems may have positive effects on road security but adverse effects may also appear. That is why, it is important to study natural driver’s behavior to develop efficient and sure systems. In driving studies, non-temporal data (e.g. age, sex, psychological profile…) and temporal data (e.g. speed, longitudinal acceleration…) are recorded. This thesis proposes a methodology to explore a multifactor and multivariate database by using a multidimensional descriptive analysis (Multiple Correspondence Analysis) followed by hypothesis tests to confirm observations. A five stages procedure is followed: Characterization, Scale transformation, Table building, Data analysis application and Presentation of results. To characterize non-temporal data we used fuzzy space windows and for temporal data, we used a fuzzy space-time windowing. To study driver’s behavior in longitudinal regulation, especially in car following situations, a study of 250 km on real road with 123 participants driving an instrumented car was realized. More than 12000 car following situations were recorded. Cognitive and personality profiles were described with neuropsychological and personality tests. We first analyzed non-temporal data to describe the population on a psychological way. Then, we focused on temporal data to describe car following situation and effects of environmental factors (meteorological conditions, traffic…) on driver’s behavior. Finally, in a last analysis, psychological profile of a participant and his driving behavior were related in order to determine the potential effects of personality and cognition on road behavior. Observations made in MCA plane were illustrated with graphical models or confirmed with hypothesis tests.Depuis une quinzaine années, de plus en plus de systèmes d’aides à la conduite équipent les véhicules. Ces systèmes peuvent se révéler positif pour la sécurité routière mais des effets pervers peuvent également apparaitre. C’est pourquoi, il est indispensable d’étudier le comportement naturel du conducteur pour développer des systèmes d’aides à la conduite efficaces et fiables. Dans l’analyse de la conduite, des données non-temporelles (âge, sexe, profil psychologique…) et de données temporelles (signaux relatifs à la conduite…) sont souvent enregistrées. La thèse propose une méthodologie pour l’exploitation d’une base de données multifactorielle et multivariée basée sur une analyse descriptive multidimensionnelle, l’analyse en correspondances multiples, suivie de tests d’hypothèses pour confirmer les observations faites dans la première analyse. Une procédure en cinq étapes a été suivie : Caractérisation, Codage, Mise en forme des données, Application d’une méthode et Présentation des résultats. La caractérisation des données non-temporelles a été faite à partir d’un découpage en fenêtres spatiales floues et les données temporelles ont été caractérisées à partir d’un fenêtrage spatio-temporel flou. Afin d’étudier le comportement du conducteur en régulation longitudinale, notamment lors des phases de suivi de véhicule, nous avons mené une étude de 250 km sur route avec une véhicule instrumenté regroupant plus de 120 conducteurs. Plus de 12000 situations de suivi ont été enregistrées. Une batterie de tests neuropsychologiques et de personnalité a permis de dresser le profil cognitif et décrire la personnalité des conducteurs. Nous avons donc dans un premier temps étudié les données non-temporelles pour décrire notre population sur le plan psychologique, puis nous avons décrit la situation de suivi et l’impact de facteurs environnementaux (conditions météorologiques, trafic…) sur le comportement du conducteur. Finalement, nous avons mis en relation dans une dernière analyse le profil psychologique du conducteur et son comportement en suivi afin de déterminer l’impact de la personnalité et de la cognition sur le comportement routier. Les observations faites grâce à l’étude des plans de l’ACM ont été illustrées à partir de graphiques explicites ou confirmés à partir de tests d’hypothèses
SRI analysis and asset management : independent or convergent ? : A field study on the French market
Get PDFThis article analyzes how the actual and expected future activities of French Socially Responsible Investment (SRI) analysts may reveal a convergence process between SRI decisions and traditional financial investment decisions, that is a form of "mainstreaming" of SRI processes, by asking the SRI analysts themselves how their work has evolved and how they perceive their positioning in the asset management sector. We present the results of a field survey on the composition and activities of French SRI analysts' teams of large institutional investors and asset managers in France in 2009. We show that the convergence towards the mainstream financial analysts seems to be clearly engaged. However, the SRI domain is still emerging and remains very fragmented leading to a wide heterogeneity of practices and positioning in the respective organizations. This is interpreted as a clear sign of a transition phase.Field survey ; French Asset Management industry ; Mainstreaming ; Socially Responsible Investments (SRI)
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
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
SRI Analysis and Asset Management: Independent or Convergent? A Field Study on the French Market
Get PDFThis article analyzes how the actual and expected future activities of French Socially Responsible Investment (SRI) analysts may reveal a convergence process between SRI decisions and traditional financial investment decisions, that is a form of “mainstreaming” of SRI processes, by asking the SRI analysts themselves how their work has evolved and how they perceive their positioning in the asset management sector. We present the results of a field survey on the composition and activities of French SRI analysts’ teams of large institutional investors and asset managers in France in 2009. We show that the convergence towards the mainstream financial analysts seems to be clearly engaged. However, the SRI domain is still emerging and remains very fragmented leading to a wide heterogeneity of practices and positioning in the respective organizations. This is interpreted as a clear sign of a transition phase.Field survey; French Asset; Management industry; Mainstreaming; Socially Responsible Investments (SRI)
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