1,720,994 research outputs found
Increasing Efficiency of Leaky-Wave Antenna by Using Substrate Integrated Slab Waveguide
No full textThis letter presents a possibility of increasing the radiation efficiency of double-sided leaky-wave antennas (LWAs) by using the substrate integrated slab waveguide (SISW). The idea originates from the fact that double-sided LWAs usually operate on the second mode, and the attenuation constant of the second mode in the SISW is smaller than that in the standard substrate integrated waveguide (SIW). This inherently leads to an increase of antenna radiation efficiency, as less power is dissipated by the traveling wave. In order to prove this concept, two antennas have been designed with the same characteristics (central frequency of 28 GHz, pointing angle of 50°, and beamwidth of 10°), one based on SIW and the other based on SISW. Our experimental verification yields 64% radiation efficiency for the SIW LWA and 80% radiation efficiency for the SISW LWA, thus proving the theoretical and simulated predictions
Tipi Italiani. Giovani designer in mostra
No full textTrenta progetti di altrettanti giovani designer italiani. Prototipi e prodotti pensati per la persona e per il tempo libero, per l'ambiente domestico e di lavoro. Criterio unificante della selezione la qualità del progetto, di volta in volta attento all'innovazione tipologica, morfologica, funzionale, all'impiego dei nuovi materiali o alle tematiche ambientali.
Milano, dal 23 gennaio al 07 febbraio 2003
presso la sede di Design-Italia Spa
via General Govone 98
progetto grafico Massimo Canali
progetto allestimento: Massimo Canali, Philippe Nigro
in collaborazione con: www.aedo-to.com, Gianpaolo Allocco / Delineo, Carlo Blotto / Supra Design, Lorenzo Damiani, Odoardo Fioravanti, Giulio Iacchettii e Matteo Ragni.
Progettisti e progetti in mostra:
Gabbia per uccelli, Enrico Azzimonti e Jordi Pigem, 2002
Wave, piatti, Alessandra Baldareschi, 2002
Lampade, Rossana Beccari, 2002
Fachiro, materassino per relax, Massimo Bellotti e Flavio Marelli, 2002
Twist collection, appendiabito, Massimo Canali, 2002
Join-Lamp, lampada, Sergio Catalano, 2002
Quentin omaggio a Leonardo Mosso, attaccapanni, Carlo Contin, 2002
Cover-Dish, Contenitore per biscotti, Lorenzo Damiani, 2002
ELLE3, poltrona, Delineo, 2002
Senzafondo, vasi in feltro, Monica Ferrigno e Dunja Weber, 2002
Shift, lampada, Odoardo Fioravanti, 2002
Freesby, lampada, Francesco Giannattasio, 2002
Piercing, portachiavi, Ilaria Gibertini, Mandarina Duck, 2000/2001
Giletto, pouff-letto, GumDesign, 2002
Dosa spaghetti, Giulio Iacchetti e Matteo Ragni, 2002
EyeLight, lampada, Giovanni Battista Mercurio, 2002
Single, cuscino, Loredana Longo, 2002
Amaca Urbana, Ilaria Marelli, 2002
Wally, chaise-longue, Carlo Martinengo e Toni Lanzillo, 2002
Jelly, lampada, Mastro design, 2002
Lingua, chaise-longue, Antonio Monte, 2002
Side, lampada, Alberto Nason, effetre, 2002
Sophie, poltrona, Philippe Nigro, 2002
Wired Chair, sedia, Gabriele Pezzini, 2002
Drop, vassoio, Lorenzo Ruggeri, 2002
Jigsaw, tavolo, Sezgin Aksu e Silvia Suardi, 2002
D31, calendario eterno, Dario Serio, Nava design, 2002
Matrice, lampada da parete, Strutturaleggera, 2002
Lamp 3, pouf, Supra Design, 2002
Orto, bastone raccogli frutta, Marco Zito, 200
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
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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