1,721,016 research outputs found
Corso teorico pratico di micologia Tenuto presso la Cattedra di Dermatologia, Dipartimento di Patologia Sistematica
No full textDistributed CBO call set-up in a circuit emulation ATM switch
No full textThis paper deals with a fully distributed routing control scheme, called flooding technique, to be applied to an ATM switch architecture for the set-up of CBO calls. The main advantage of this technique with respect to a centralized solution consists in a sensitive improvement of the system performance, in particular as far as the fault-tolerance and the flexibility are concerned. Two service scenarios are considered: in the first one the CBO services are characterized by a burstiness equal to one, in the second one they have a burstiness greater than one. The implementation alternatives of the flooding technique relevant to both the scenarios are presented and their main characteristics arecompared. In the paper, the ATM switch architecture and its mode of operation are also described. In particular, the different strategies for the handling of CBO and non-isochronous classes of traffic are presented and some properties on the topology of the switching fabric are given
Evolution of the Generalized Parallel Delta Networks towards a photonic switching environment
No full textThis paper deals with the non-blocking properties of the Generalized Parallel Delta Networks and their application to the photonic switching environment. The peculiar characteristics of GPDNs well suit the constraints arising from this new application area In particular, these characteristics consist in a low number of stages and a high fault tolerance due to the stacking of identical Delta networks. Moreover, it is here demonstrated that the crosstalk due to the switch crossover can be completely avoided by means of a proper dimensioning of the network parameters. A new classification of the non-blocking properties is proposed. In particular, a new non-blocking condition, named as strong, has been defined. It establishes that two paths are not in conflict if they do not share any switching element. The strong non-blocking condition has been considered together with the traditional one. This second condition is normally applied in the electronic environment; as it is based on the unshareability of the interstage links, here, it is named as weak. The conditions which have to be satisfied so that a Generalized Parallel Delta Network can be weakly and/or strongly non-blocking have been found and demonstrated
Questioni di cittadinanza in un “eclettico meticcio politico”: Tom Paine (1737-1809)
No full textCittadinanze offre una nuova prospettiva sulla storia dello Stato, inteso aristotelicamente come l'insieme dei suoi cittadini. Il volume raccoglie dodici saggi dedicati ai possibili modi in cui la cittadinanza ha preso forma durante l'età contemporanea, analizzandone le diverse concrezioni storiche. Non una cittadinanza singola, ma plurale, oggetto e insieme strumento epistemologico dalle molte declinazioni - istituzionali, teorico-politiche, giuridiche, filosofiche. Una ricostruzione condotta attraverso luoghi e tempi differenti, che vanno dalle rivoluzioni francese e americana sino all'immaterialità del digital divide. Un esame originale che interroga le storie, le prassi e i simboli che hanno legato gli individui alle loro comunità politiche
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
Nazione e cittadinanza. Pasquale Stanislao Mancini e i diritti civili degli stranieri
No full textSi affronta il tema dei nessi fra idea di nazione e diritti di cittadinanza nel pensiero e nell'attività forense e legislativa di P.S. Mancini durante il periodo piemontese e negli anni della costruzione dello stato unitario
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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