1,721,156 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
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
A compact CMOS Gm-C Biquadratic Cell for Chopper Amplifier Band Limiting
No full textWe present a compact Gm-C biquadratic cell with
fully differential input/single-ended output for continuous time
low pass filtering and channel bandwidth selection in
integrated sensor interfaces. Transconductors with input
MOSFETs operating in triode region allow the filter to operate
at very low cut-off frequencies without excessive area
occupation. The noise versus input range issue is originally
addressed in order to provide useful design formulas.
Electrical simulations successfully demonstrate the application
of the filter as a cascade stage after a chopper modulated
amplifier
A single chip, double channel thermal flow meter
No full textThe fabrication and experimental characterization
of a thermal flow meter, capable of detecting and
measuring two independent gas flows with a single chip, is
described. The innovative aspect of the sensor is the use of
a plastic adapter, thermally sealed to the chip, to convey
the gas flow only to the chip areas where the sensors are
located. The packaging approach allowed placing two
micrometric differential thermal anemometers, present on
4 9 4 mm2 silicon chips, into distinct flow channels. The
reduced spacing between the sensing structures required
positioning of the latter on channel bends, introducing
sensitivity reduction and response asymmetries with
respect to single channel devices presented earlier. These
effects are explained using fluid-dynamic simulations
Offset Compensation of Integrated Thermal Flow Sensors by means of Split Heater Microstructures
No full textThe effectiveness of a new offset compensation
technique for integrated thermal flow meters is demonstrated.
A sensor structure based on two heaters placed between two
temperature probes is designed with a commercial CMOS
process and fabricated by means of a post-processing
technique. The power unbalance between the two heaters is
used to compensate the intrinsic sensor offset. Experiments,
performed in nitrogen at different temperatures, confirm the
reduction of both offset and its temperature drift by nearly one order of magnitude
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
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