1,721,030 research outputs found
L’edizione digitale del “Nuovo Liruti”: il Dizionario biografico dei friulani
Full text linkLa maggior parte dei dizionari biografici oggi esistenti tende sempre più spesso a trasformarsi da edizione cartacea ad edizione on-line. Solo per citare alcuni tra gli esempi più conosciuti, la Treccani ha realizzato una edizione digitale del Dizionario Biografico degli Italiani, che risulta più facilmente fruibile e più aggiornata rispetto all’edizione cartacea (la quale - organizzata secondo un ordinamento alfabetico – con le voci relative alla lettera “A” pubblicate nel 1960 e quelle relative alla lettera “M” pubblicate nel 2011 – risulta attualmente del tutto obsoleta); il Dizionario Rosi del Rinascimento Risorgimentale è completamente consultabile on-line, così come il dizionario biografico Donne e Uomini della Resistenza dell’Associazione Nazionale Partigiani d’Italia, il Dizionario Biografico on-line dei Protestanti in Italia della Società di Studi Valdesi, il Diccionario Biográfico Español, solo per fare alcuni esempi significativi. Tuttavia, spesso questi
dizionari on-line presentano un’interfaccia poco intuitiva e spesso non così “attraente” da invogliare l’utente nella navigazione. Inoltre non vengono quasi mai utilizzati gli strumenti del web setico che invece possono trovare una loro peculiare ed interessante applicazione proprio in questo particolare campo.
Il progetto che si intende presentare in questa sede vuole costituire una best practice per l’applicazione di metodologie innovative nella realizzazione di edizioni digitali dei dizionari biografici, costituendo, inoltre, un esempio di collaborazione tra umanisti ed informatici, senza la quale il progetto non sarebbe stato possibile
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
A New Millimeter Wave Small-Signal Modeling Approach for pHEMTs Accounting for the Output Conductance Time Delay
No full textA new technique is developed for determining analytically a millimeter wave small-signal equivalent circuit model of GaAs pHEMTs from Scattering parameter measurements. In order to obtain a good agreement between model simulations and measurements up to 90 GHz, the conventional intrinsic output conductance is substituted by a voltage controlled current source with a time delay. Consequently, a simple and accurate extraction procedure is proposed for taking into account the introduction of the output conductance time delay
The Kink Phenomenon in the Transistor S22: A Systematic and Numerical Approach
No full textThis letter provides a valuable technique for evaluating
the size and the shape of the kink effect in S22 for microwave
transistors. Since this phenomenon can be detected as the appearance of a concave shape in Im(S22) versus Re(S22), the second derivative of such a function is exploited for defining a set of parameters to fully and systematically characterize it. The effectiveness of the developed technique is demonstrated by its application to quantify the increase of the kink effect with the gate periphery for 0.15 um GaAs HEMTs
Transistor Vector Load-Pull Characterization for Millimeter-Wave Power Amplifier Design
No full textThe manuscript presents a load-pull
characterization technique for the design of power amplifiers in
the millimeter-wave frequency band. The proposed approach is
based on a recently proposed characterization technique which,
by exploiting direct low-frequency nonlinear electron device
measurements in conjunction with a model-based description of
the device strictly dynamic nonlinearities, achieves a similar level
of accuracy provided by expensive nonlinear measurement setups
operating at microwave frequencies. The proposed
characterization technique, validated by means of measurements
carried out at 20 GHz on a 0.15-μm GaAs pHEMT device, has
been exploited for the first time in order to draw load-pull
contours up to 60 GHz
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
Investigation on the non-quasi-static effect implementation for millimeter-wave FET models
No full textThe present article analyzes in detail different intrinsic small-signal models for transistors. Particular attention is devoted to the non-quasi-static effects, which play a crucial role at microwave and millimeter-wave frequencies. The advantages and disadvantages of these different equivalent circuit topologies are analyzed from both theoretical and experimental standpoints. This study clearly proves that best choice among these model representations depends on the specific device technology besides the investigated frequency range
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
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