1,720,981 research outputs found
Commercio, metrologia, fiscalità. Su P. Vindob. 40 822 verso
No full textFederico De Romanis, Commercio, metrologia, fiscalità. Su P. Vindob. G 40.822 verso, p. 11-60.
Dal calcolo del valore fiscale di alcune merci importate dall'India, soggette in Alessandria a un dazio del 25%, si deduce che la pressione fiscale sulla circolazione delle merci in Egitto era in parte regolata con alterazioni delle locali unità ponderali. Le frequenti oscillazioni di queste ultime nel corso dei primi secoli dell'età imperiale possono pertanto essere la spia di altrettanti aggiustamenti della pressione fiscale. In età tardoantica l'aliquota del dazio sulle preziose importazioni orientali risulta dimezzata rispetto all'età altoimperiale : si prospetta la possibilità che il uectigal del 12,5% attestato in Pannonia tra II e III sec. d.C, si riferisca anch'esso all'importazione di merci preziose (ambra) e che abbia accompagnato o preceduto l'istituzione dell'analogo uectigal in Egitto e in Siria.De Romanis Federico. Commercio, metrologia, fiscalità. Su P. Vindob. 40 822 verso. In: Mélanges de l'École française de Rome. Antiquité, tome 110, n°1. 1998. pp. 11-60
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
- …
