1,721,000 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
Desenvolvimento de uma rede de sensores sem fios para monitorização de peixes
Get PDFDissertação de Mestrado, Engenharia Electrónica e Telecomunicações, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2014Este trabalho teve como principal objetivo desenvolver e implementar uma rede de sensores fios, capaz de monitorizar tanques de aquacultura. Dada a necessidade de um sistema de baixo custo e elevada flexibilidade para monitorização dos tanques de cultivo de esturjão Beluga por parte de empresa Caviar Portugal, foi efetuado um estudo detalhado sobre sensores, rede de sensoressem fios e sobre o protocolo ZigBee, permitido assim desenvolver um módulo de hardware capaz de efetuar o pretendido
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
Development of biosensors for molecular analysis
Get PDFTese dout., Ciências Biotecnológicas, Universidade do Algarve, 2007This thesis deals with the application of piezoelectric sensors, namely quartz crystal
microbalances (QCM), for the study of molecular interactions and for biomedical purposes.
Piezoelectric transduction allows the detection of biorecognition events and its operation
depends on the mechanical vibration of the crystal whose resonance frequency is sensible to
surface mass changes. But in liquid medium these sensors also respond to the properties of
solutions and adsorbed films. Thus, a major aspect explored in this thesis is the expansion of
the physical understanding of the behavior of these sensors in liquid medium and also how
organic or biological layers can affect the results and their interpretation. This was achieved
using impedance analysis where the behavior of the piezoelectric sensor is interpreted with
the help of equivalent electric RLC circuits. The potential electroacoustic interference of
charged species in solution was particularly studied and a new equivalent circuit is proposed
in order to detect and quantify these effects with the assistance of impedance analysis.
The efficiency of the key steps taken for the development of our QCM system, was
experimentally demonstrated with the qualitative and quantitative analysis of the process of
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11-hydroxy-1-undecanothiol SAMs (self-assembled monolayers) formation and the
recognition of streptavidin in aqueous medium using biotin modified sensors.
Finally the work was focused on the development of a new detection tool for the HIV1 virus
using piezoelectric immunosensors based on recombinant antibodies to detect the Vif
molecule (virion infectivity factor). The developed immunosensors selectively detected Vif in
aqueous solutions and presented specificity and good sensibility when detecting the target
protein in complex samples like mixtures of proteins and cell extracts
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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