1,721,052 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
Decentralised control of a quadruple tank with a decoupled event-based strategy
No full textIn this work we focus on the development of a software tool, which allows users to perform experiments with event-based PI controllers in a multivariable system composed of four
coupled tanks. The quadruple tank plant allows the student of control engineering to experiment and obtain an intuitive knowledge about multivariable systems (systems with more than one inputs and more than one outputs), to study the dierences between the minimum phase and non-minimum phase behaviours and the diculties in control that arise in the latter case, and all this with the motivation that the experiments can be done not only in simulation but with
a real plant. The control system provides the possibility of using a decoupling net between the controllers and the actuators, which can have a direct or inverse scheme, and which can be used to reduce the eect of the interactions between inputs and outputs. Finally, we present a set
of results illustrating the possibilities of the application to investigate the performance of the event-based controller together with a decoupling strategy
Building process control simulations with Easy Java Simulations elements
No full textThis work presents a library of Java classes and Easy Java Simulation (EJS) elements, developed to provide a framework to allow an easy building of a wide range of process control related simulations. The potentiality of the framework is illustrated with an application example built by combining several elements of the library: the simulation of control loops composed of a SISO process and a PID controller with send-on-delta sampling. The framework has been designed to be somewhat similar to a block diagram editor, where the user can create a control loop simply by adding the constructive elements and interconnecting them as needed. The model creation is thus made much more intuitive and robust, mainly because the lines of code needed are reduced, if not at all, depending on the complexity of the simulation. The library provides the user with the implementation of the most frequently used control elements, such as a system described by state-space expressions, PID controllers, non-linear systems, etc. In addition, an extension mechanism is provided for advanced users, which can extend the functionality of the built-in blocks either by adapting them or by defining completely new blocks
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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