1,721,672 research outputs found
Sul concetto di autorità nelle scienze sociali
No full textOggetto di questo lavoro è il concetto di autorità nelle scienze social
Autorità, autoritarismo e apprendimento dell’aggressività in una caserma di paracadutisti
No full textIl saggio ha per oggetto l'addestramento militare e la formazione personalità autoritarie
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
Experimental Analysis of In-Channel Interference Effects on the Performance of a DVB-T System
No full textDigital-video-broadcasting-terrestrial (DVB-T) systems
affected by in-channel interference are dealt with here.
Attention is mainly paid to the experimental assessment of the
video quality perceived by the end user when only in-channel interference
degrades the transmission path. To this aim, a number
of experiments are conducted through a proper testbed, which
enlists a flexible DVB-T broadcasting platform. To confer reliability
and generality to the research activity, different configurations
of the transmission platform parameters are arranged; moreover,
common types of interference are taken into account. Due to
a proper cross-layer measurement approach, valuable relations
involving values that physical and modulation quantities and
application-level metrics assume at the same time are deduced.
The ultimate goal is to derive helpful information and hints for
designers and technicians that are to be applied to efficiently
optimize the performance of a DVB-T system whenever in-channel
interference is of major concern
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
Cross-layer measurement for the analysis of DVB-T system performance
No full textThis paper deals with cross-layer measurements for
the efficient analysis of Digital Video Broadcasting-Terrestrial
(DVB-T) system performance. In particular, valuable relationships
between some cross-layer DVB-T system parameters are
investigated through measurements conducted at the physical and
application layers. Specifically, channel power, error vector magnitude,
and modulation error ratio are assessed at the physical
layer, whereas objective video quality indices are estimated at the
application layer. To this aim, a number of real-life experiments
are executed through a purposely developed testbed that enlists a
suitable DVB-T transmission platform and real-life receivers. The
ultimate goal is to highlight the importance of cross-layer measurements
in the analysis and troubleshooting of DVB-T system
operation and to show how to deduce from such measurements
practical information and hints to be profitably used in the design
and setup of any DVB-T broadcasting system
- …
