1,721,103 research outputs found
Townsend, Benjamin Franklin - Tran, Hanh
No full textPart of the Oregon Index compiled by Oregon State Library staff and volunteers
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
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
Assistance framework for writing correct graph transformations
No full textLes travaux de cette thèse ont pour cadre la vérification formelle, et plus spécifiquement le projet ANR Blanc CLIMT (Categorical and Logical Methods in Model Transformation) dédié aux grammaires de graphes. Ce projet, qui a démarré en février 2012 pour une durée de 48 mois, a donné lieu à la définition du langage Small-tALC, bâti sur la logique de description ALCQI. Ce langage prend la forme d’un DSL (Domain Specific Language) impératif à base de règles, chacune dérivant structurellement un graphe. Le langage s’accompagne d’un composant de preuve basé sur la logique de Hoare chargé d’automatiser le processus de vérification d’une règle. Cependant, force est de constater que tous les praticiens ne sont pas nécessairement familiers avec les méthodes formelles du génie logiciel et que les transformations sont complexes à écrire. En particulier, ne disposant que du seul prouveur, il s’agit pour le développeur Small-tALC d’écrire un triplet de Hoare {P} S {Q} et d’attendre le verdict de sa correction sous la forme d’un graphe contre-exemple en cas d’échec. Ce contre-exemple est parfois difficile à décrypter, et ne permet pas de localiser aisément l’erreur au sein du triplet. De plus, le prouveur ne valide qu’une seule règle à la fois, sans considérer l’ensemble des règles de transformation et leur ordonnancement d’exécution. Ce constat nous a conduits à proposer un environnement d’assistance au développeur Small-tALC. Cette assistance vise à l’aider à rédiger ses triplets et à prouver ses transformations, en lui offrant plus de rétroaction que le prouveur. Pour ce faire, les instructions du langage ont été revisitées selon l’angle ABox et TBox de la logique ALCQI. Ainsi, conformément aux logiques de description, la mise à jour du graphe par la règle s’assimile à la mise à jour ABox des individus (les nœuds) et de leurs relations (les arcs) d’un domaine terminologique TBox (le type des nœuds et les étiquettes des arcs) susceptible d’évoluer. Les contributions de cette thèse concernent : (1) un extracteur de préconditions ABox à partir d’un code de transformation S et de sa postcondition Q pour l’écriture d’une règle {P} S {Q} correcte par construction, (2) un raisonneur TBox capable d’inférer des propriétés sur des ensembles de nœuds transformés par un enchaînement de règles {Pi} Si {Qi}, et (3) d’autres diagnostics ABox et TBox sous la forme de tests afin d’identifier et de localiser des problèmes dans les programmes. L’analyse statique du code de transformation d’une règle, combinée à un calcul d’alias des variables désignant les nœuds du graphe, permet d’extraire un ensemble de préconditions ABox validant la règle. Les inférences TBox pour un enchaînement de règles résultent d’une analyse statique par interprétation abstraite des règles ABox afin de vérifier formellement des états du graphe avant et après les appels des règles. A ces deux outils formels s’ajoutent des analyseurs dynamiques produisant une batterie de tests pour une règle ABox, ou un diagnostic TBox pour une séquence de règlesThe overall context of this thesis is formal verification, and more specifically the ANR Blanc CLIMT project (Categorical and Logical Methods in Model Transformation) dedicated to graph grammars. This project, which started in February 2012 for 48 months, gave rise to the development of the Small- tALC language, a graph transformation language based on the ALCQI description logic. This language takes the form of an imperative DSL (Domain Specific Language) based on rules; from each rule structurally derives a graph. It goes with a proof component based on Hoare's logic designed to automate the process of rule verification. However, it must be assumed that not all developers are familiar with formal methods of software engineering, and that graph transformations are complex to write. In particular, using exclusively the prover, the Small- tALC developer must write a Hoare triple {P} S {Q} and wait for the feedback in the form of a counterexample graph in case of failure. This counter-example is sometimes difficult to interpret, and so it does not allow to easily locate the error within the triple. Moreover, the prover validates only one rule at once, without considering all the transformation rules and their execution order. This fact led us to propose an assistance framework for Small- tALC to help developers write their triples and prove their transformations, providing them more feedback than the prover does. To this purpose, the Small- tALC instructions have been reviewed according to the ABox and TBox aspects of the ALCQI logic. Thus, in accordance with description logics, updating the graph by the rule corresponds to the ABox updating of individuals (nodes) and their relationships (edges) of a TBox terminology domain (nodes concepts and edges labels) that is also expected to evolve. The contributions of this thesis concern: (1) an ABox precondition extractor from a transformation code S and its post-condition Q in order to produce a correct by construction rule {P} S {Q}, (2) a TBox reasoner to infer properties on sets of nodes transformed by a rule sequence {Pi} Si {Qi}, and (3) other ABox and TBox diagnostics based on tests to identify and locate errors in programs. The static analysis of the code of a transformation rule, combined with an alias calculus of the variables that can not designate the same nodes of the graph, allows to extract a set of ABox preconditions validating the rule. TBox inferences related to a sequence of rules result from a static analysis by abstract interpretation of the ABox rules. These inferences formally check graph states before and after rule calls. Beside these two formal tools, the framework features dynamic analyzers that produce test cases for an ABox rule, or a TBox diagnosis for a sequence of rule
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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