1,721,091 research outputs found
MISURE SU PoL PER APPLICAZIONI IN AMBIENTE OSTILE
No full textI dispositivi elettronici installati presso gli esperimenti LHC, soprattutto in vista del prossimo upgrade, saranno chiamati a lavorare in un ambiente particolarmente ostile. In particolare le sezioni di alimentazione, oggetto di questa memoria, dovranno essere opportunamente riprogettate in modo da poter essere conformi con le future specifiche. In questa memoria saranno presentati alcuni risultati ottenuti da un dispositivo commerciale quando sottoposto a campo magnetico
SVILUPPO DI DC-DC CONVERTER PER APPLICAZIONI IN AMBIENTE OSTILE
No full textI dispositivi elettronici installati presso gli esperimenti LHC, soprattutto in vista del prossimo upgrade, saranno chiamati a lavorare in un ambiente particolarmente ostile. Nell’ambito del Progetto Apollo finanziato dall’INFN si è percorsa anche la via della progettazione di un particolare DC-DC converter basato sui dispositivi GaN
The dependence of latch-up sensitivity on layout and technology features, as analyzed by electrical measurements, HFIELDS and SPICE simulations, and infrared microscopy characterization
No full textThe influence of different layout parameters and of temperature on latch-up susceptibility has been studied on standard four-stripes test structures made using different processes: a standard n-well, a twin-tub and an epitaxial technology. Triggering characteristics of structures without guard rings can be fairly accurately predicted by two-dimensional simulations, performed by HFIELDS. Hysteresis effects in the holding characteristics are due to an uneven distribution of latch-up current within the structures, which has been detected by IR microscopy. Similar current redistribution effects can cause anomalies during pulsed measurements on CMOS integrated circuits. Three-diemsnional effects can be emulated by SPICE simulations
Introduzione. Per una diversa prospettiva
No full textIl saggio contiene gli Atti del III Convegno di Armonie Composte tenutosi presso l'Abbazia di Praglia il convegno è dedicato alla martoriata realtà del Centro Italia colpita ancora una volta dal sisma. L'introduzione spiega le ragioni delle riflessioni maturate in quel consesso focalizzate non solo sulla natura del sisma, le sue conseguenze o sulle possibili politiche di messa in sicurezza dei territori e delle comunità, quanto ha voluto essere un'occasione per riaffermare la necessità di un’innovativa prospettiva multidisciplinare, intersettoriale che permetta di osservare, analizzare criticamente e comprendere gli effetti delle calamità naturali. Con la volontà di contribuire alla costruzione di una diversa consapevolezza con cui affrontare terremoti ed altri disastri (basati non solo su presupposti di contenuto tecnico-scientifico ma anche su azioni in grado di far leva sui fattori sociali e culturali, esplorando in modo ampio e completo gli impatti che i terremoti procurano
sull’ambiente costruito come sulla struttura sociale nel suo complesso, sulle comunità, sui gruppi sociali e familiari), i diversi contributi vogliono dare spunto ad una riflessione che possa condurre ad una diversa filosofia di intervento nelle terre colite dal sisma.
Il saggio in questione oltre a voler restituire il fil rouge che ha guidato la costruzione dell'iniziativa ed i contenuti dei diversi contributi raccolti, vuole soprattutto persuadere della validità di un diverso approccio all'emergenza e soprattutto indagare le modalità di costruzione non solo di una maggiore consapevolezza collettiva per la prevenzione, ma piuttosto la creazione di una particolare "resilienza" delle comunità locali perché il sisma non sia più causa di ulteriori forme di disgregazione sociale e sradicamento territoriale
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
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