1,720,994 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
Antenne Integrate Attive
Full text linkIl quaderno Antenne Integrate Attive costituisce il primo numero della collana «Quaderni del Dottorato di Ricerca in Ingegneria dell’Informazione» dell’Università di Firenze, a supporto dell’omonimo corso di dottorato. Le antenne integrate attive, introdotte come tecnologia abilitante per front-end multifunzionali ad elevate prestazioni per sistemi di comunicazione e radar, vengono ad oggi considerate anche per le Personal Area Network (PAN) e per le Dedicated Short Range Communication (DSRC), a basso costo e potenza. Negli array per applicazioni spaziali, dove l’affidabilità è un aspetto chiave, l’approccio ad elementi attivi distribuiti, consente di migliorare la tolleranza ai guasti dell’intero sistema. Il quaderno è organizzato in sei capitoli. I primi tre presentano i concetti di base relativi al link radio, la definizione dei parametri in uso ed il loro coinvolgimento nelle relazioni costitutive. Nel quarto e nel quinto sono trattati i metodi di progetto delle principali configurazioni di antenna e sono forniti alcuni esempi applicativi. Infine, il capitolo sei passa in rassegna i metodi di analisi impiegati nei moderni software per la simulazione elettromagnetica e dei circuiti a microonde
A better understanding of the requirements for predictive modeling of strain engineering in nMOS transistors
No full textIn this paper we use a Multi-Subband-Monte-Carlo model to study the transport in nMOSFETs featuring strained silicon channels. It is shown that state-of-the-art modeling of the mobility in n-type inversion layers cannot reproduce the mobility enhancements measured in Si devices with either uniaxial or biaxial strain. Possible reasons for this limitation are analyzed in detail
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
Multi-Subband Monte-Carlo study of Transport, Quantization and Electron Gas Degeneration in Ultra-Thin SOI n-MOSFETs
No full text
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
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