1,720,960 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
Mandatory protection checked against the automotive sector's safety objectives
No full textLa safety d’un système automobile (sécurité des personnes et des biens) dépend du contexte de fonctionnement du système embarqué. Afin de préserver la safety, les mécanismes de sécurité doivent prendre en compte dynamiquement le contexte de fonctionnement du système. Or, comment garantir qu’un mécanisme de sécurité dynamique préserve la safety dans toutes les configurations possibles, sans introduire d’effets indésirables ? Afin de répondre à ces problématiques, nous proposons d’ajouter un mécanisme de contrôle d’accès obligatoire dynamique vérifié au regard des objectifs safety. Nous commençons par montrer que les mécanismes de contrôle d’accès existants ne sont pas suffisants. Nous détaillons ensuite certaines spécificités du secteur automobile et les approches de vérification formelle que nous utiliserons. Puis nous présentons la conception de notre mécanisme de contrôle d’accès, le cas d’usage réel sur lequel il sera testé, ainsi que les capacités de l'attaquant considéré. Nous détaillons aussi la politique de contrôle d’accès ainsi que les propriétés que nous vérifions sur notre cas d’usage. Nous passons ensuite à la modélisation de notre cas d’usage afin de le vérifier avec deux outils. Différentes vérifications sont effectuées afin de vérifier que le système possède les propriétés voulues, qu’elles ne sont pas garanties sans notre contrôle d'accès mais préservées par notre politique de contrôle d’accès. Enfin, nous montrons que notre mécanisme de contrôle d’accès est tolérant aux pertes lorsque des mécanismes de rejeu appropriés sont mis en place.The safety of an automotive system (security of persons and goods) depends on the system‘s operating context. In order to preserve safety, safety mechanisms must dynamically consider the context of the embedded system. However, how can we guarantee that a dynamic safety mechanism preserves the safety in all possible configurations, without introducing undesirable effects? In order to address these issues, we propose to add a dynamic mandatory access control mechanism that is verified with respect to safety objectives. We start by showing that existing access control mechanisms are not sufficient. We then detail some specificities of the automotive sector and the formal verification approaches we will use. We then present the design of our access control mechanism, the real use case on and the capabilities of the attacker. We also detail the access control policy and the properties that have to be enforced. We then move on to model our use case in order to verify it with two tools. Different checks are performed to verify that the system has the desired properties, that they are not satisfied without our access control but are preserved by the enforcement of our access control policy. Finally, we show that our access control mechanism is loss tolerant when appropriate replay mechanisms are implemented
Protection obligatoire vérifiée au regard des objectifs safety du secteur automobile
No full textThe safety of an automotive system (security of persons and goods) depends on the system‘s operating context. In order to preserve safety, safety mechanisms must dynamically consider the context of the embedded system. However, how can we guarantee that a dynamic safety mechanism preserves the safety in all possible configurations, without introducing undesirable effects ? In order to address these issues, we propose to add a dynamic mandatory access control mechanism that is verified with respect to safety objectives. We start by showing that existing access control mechanisms are not sufficient. We then detail some specificities of the automotive sector and the formal verification approaches we will use. We then present the design of our access control mechanism, the real use case on and the capabilities of the attacker. We also detail the access control policy and the properties that have to be enforced. We then move on to model our use case in order to verify it with two tools. Different checks are performed to verify that the system has the desired properties, that they are not satisfied without our access control but are preserved by the enforcement of our access control policy. Finally, we show that our access control mechanism is loss tolerant when appropriate replay mechanisms are implemented.La safety d’un système automobile (sécurité des personnes et des biens) dépend du contexte de fonctionnement du système embarqué. Afin de préserver la safety, les mécanismes de sécurité doivent prendre en compte dynamiquement le contexte de fonctionnement du système. Or, comment garantir qu’un mécanisme de sécurité dynamique préserve la safety dans toutes les configurations possibles, sans introduire d’effets indésirables ? Afin de répondre à ces problématiques, nous proposons d’ajouter un mécanisme de contrôle d’accès obligatoire dynamique vérifié au regard des objectifs safety. Nous commençons par montrer que les mécanismes de contrôle d’accès existants ne sont pas suffisants. Nous détaillons ensuite certaines spécificités du secteur automobile et les approches de vérification formelle que nous utiliserons. uis nous présentons la conception de notre mécanisme de contrôle d’accès, le cas d’usage réel sur lequel il sera testé, ainsi que les capacités de l’attaquant considéré. Nous détaillons aussi la politique de contrôle d’accès ainsi que les propriétés que nous vérifions sur notre cas d’usage. Nous passons ensuite à la modélisation de notre cas d’usage afin de le vérifier avec deux outils. Différentes vérifications sont effectuées afin de vérifier que le système possède les propriétés voulues, qu’elles ne sont pas garanties sans notre contrôle d’accès mais préservées par notre politique de contrôle d’accès. Enfin, nous montrons que notre mécanisme de contrôle d’accès est tolérant aux pertes lorsque des mécanismes de rejeu appropriés sont mis en place
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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