1,721,097 research outputs found
Rocco Pittaco. 1822 – 1898. Pittura e società nell'800 in Friuli e Veneto
No full textRicostruzione dell'attività di un autore attivo tra Veneto e Friuli nel corso del XIX secolo, rappresentativo di una pittura eclettica e dai caratterizzanti intenti didattici
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
Effects of mechanical stress in under-sized clams, Tapes philippinarum: a laboratory approach.
No full textThe present study is a first attempt at evaluating the effects of repeated disturbance,
such as that caused by mechanical fishing systems, on the target species, Tapes
philippinarum, intensively exploited in the Lagoon of Venice (North-East Italy). In
particular, in free-access fishing grounds, detrimental effects of dredging may be suffered
by under-sized clams, which are disturbed by fishing tools many times throughout their
lives before they are collected. Similar mechanical stress conditions are experienced by
T. philippinarum in licensed areas, where they are farmed in aquaculture conditions and
undergo the harmful impact of hydraulic dredging. To evaluate the effects of short-term
mechanical stress, under-sized clams were subjected to experimental shaking in the
laboratory, and detrimental effects on their well-being were investigated by applying the
biomarker approach. Changes in physiological, biochemical and behavioural responses
were evaluated by determining scope for growth, adenylate energy charge, survival in air
time, reburrowing time, and shell damage level. Responses highlighted general worsening
in clam condition as mechanical stress increased. Among the various measurements,
survival in air and reburrowing time appeared particularly suitable as indices,
their responsiveness and applicability suggesting their use in assessing mechanical stress
due to dredging in field conditions
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