1,720,955 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

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    We 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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We 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

    Definition and design of a new communication protocol and interfaces for data transmission in High Energy Physics experiments

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    High Energy Physics experiments have very similar architectures with respect to systems for acquisition of data from sensors and for control and management of the detector, and therefore similar requirements about data rate, trigger latency, robustness of critical data against transmission errors, radiation hardness and power dissipation and of hardware components and material budget. The use of common solutions that can be reused in different applicative contexts can reduce costs, risks and time needed for the development of new experiments. In particular, a research and development activity appeared as useful in the field of electrical links that are employed for data transmission to and from Front End circuits inside the detectors to move power-consuming optical converters away from the interaction point. Moving from these considerations, the FF-LYNX (Fast and Flexible links) project was started in January 2009 by a collaboration between INFN-PI (Italian National Institute for Nuclear Physics, division of Pisa) and the Department of Information Engineering (DII_IET) of the University of Pisa, with the aim of defining a new serial communication protocol for integrated distribution of TTC signals and Data Acquisition, satisfying the typical requirements of HEP applications and providing flexibility for its adaptation to different scenarios, and of its implementation in radiation-tolerant, low power interfaces. The work presented in this thesis constituted a phase of the FF-LYNX project working plan and was carried out at the Pisa division of INFN: in particular, it dealt with the definition of a first version of the FF-LYNX protocol and the design of hardware transmitter and receiver interfaces implementing it. In this thesis first of all the purposes of the project are presented and the methodology defined for the project work is outlined; then the FF-LYNX protocol (version 1) is described: the basic issues about trigger and data transmission that were considered in the definition of this version of the protocol are outlined, as well as the solutions that were adopted to address these issues, and the results of simulations in a high-level model of the link, intended to estimate various aspects of the protocol performance, are presented. Subsequently, the architecture that was defined for the interfaces implementing the FF-LYNX protocol version 1 is illustrated, and the VHDL models of the transmitter and receiver blocks that was created in the design phase of the FF-LYNX interfaces is described in detail also reporting results of simulations on a VHDL test bench for the complete transmitter-receiver system. Finally, an FPGA based emulator for the FF-LYNX transmitter-receiver system, foreseen as the final result for the FF-LYNX project first year of activity, is outlined in its functional architecture, the development board chosen for its implementation is briefly described, and the results of preliminary synthesis trials of the designed TX and RX blocks onto the target FPGA are reported
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