1,720,976 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
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
UN OPERADOR DISCRETO PARA LA ECUACION ADVECCION-REACCION-DIFUSION EN UN ESPACIO DE DIMENSION INFINITA
Get PDFLa ecuación diferencial advección – reacción - difusión (ADR) modela la dinámica del transporte de un soluto en un fluido considerando los efectos de reacción dentro del mismo. La solución de dicha ecuac
Degradation - Safety Analytics in Energy Storage
No full textThe lucrative characteristics of high energy and power density from lithium-ion batteries have also become drawbacks when they are not handled appropriately. The reactive and flammable materials present within the cell raise safety concerns which need to be addressed. Aging of the cell components occurs in a natural way due to continuous cycling. Constant intercalation/deintercalation of Li-ions into the active materials induces stresses that in the long-term cycling mechanically modify the electrodes in an irreversible way. Also, electrode/electrolyte side reactions diminish the Li-ion inventory reducing the cell capacity and lifetime. Along with cell aging, intentional/unintentional abuse tests can occur at the hands of the final user. Improper handling and operation may lead the Li-ion cell to failure and possibly going into thermal runaway. This condition represents a threat to safety not only for cell integrity but also for user safety. Failure event can occur not only in brand new cells but also in aged cells. Current degradation studies focus either on the long-term aging degradation mechanisms or on fresh new cells’ abuse test. And few of them focused on the combination of both of them.In this work, the degradation of Li-ion cells is investigated at different levels. First, at the electrode level, the effect of electrode processing and the intercalation properties of an anode and cathode materials is investigated. Then, at the cell level, abuse conditions such as external short, overcharge and overdischarge are studied in fresh and aged cells with different levels of degradation. Last but not least, the cells are assembled in a module configuration to investigate how a minor difference from one cell to another can affect the long-term performance. The aim is accomplished via a controlled lab test approach in order to get insights about the electrochemical, thermal and morphological changes that take place when the cell degrades
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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