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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
WEB-based Radiology: a future to be created
No full textThe impact of Internet on Medicine and Surgery is certainly remarkable, however the influence it had on Diagnostic Imaging was even stronger. The standardization of digital images acquired by the different medical imaging equipment has further facilitated the diffusion, transmission and communication in radiology within hospitals as well as on WEB. Radiology departments are bound to become "filmless" and with the present "tablet PC" radiological images will be directly transferred to the patient's bed in the relative electronic patient report. For radiology, interactive education could be envisaged with a tutor who guides the student(s) through the network. The Internet is an inexhaustible source of radiologic educational and information material with a number of sites of clinical cases, tutorial and teaching files, journals and magisterial lectures on-line. In a near future, the Internet could be applied in the simulation of clinicoradiologic cases or in applications of artificial int..
Le datazioni radiometriche della Grotta Su Coloru (Sassari) nella transizione Mesolitico-Neolitico
No full textGli A. discutono sul significato e sulle implicazioni storiche relative alla presenza di comunità mesolitiche in sardegna e al successivio arrivo di gruppi del Neolitico antico. le datazioni radiometriche ottenute per la sequenza stratigrafica di Su Coloru consentono di ridurre lo iato cronologico noto relativo al passaggio tra i due stadi crono-culturali
Smoking trends in Italy from 1950 to 2000
No full textSTUDY OBJECTIVE:
To assess how the prevalence of smokers in Italy from 1950 to 2000 has changed, in parallel with law development and the growing attention towards smoking prevention.
DESIGN, SETTING, AND PARTICIPANTS:
Historical data on smoking trends have been obtained using data collected in 2000 by the National Institute of Statistics. A correction coefficient is proposed to overcome the bias of differential mortality reported in other papers. The sample is made up of 102 261 people aged 15-69 years.
MAIN RESULTS:
A general downward trend is seen; there is a more pronounced decrease starting from 1975 to 1980. In both sexes the peak prevalence tends to decrease according to the birth cohort because of the earlier age in which they gave up. A partial exception to the decline of tobacco use in recent years may be made for the 15-19 year-old age group, which has remained stable since 1990.
CONCLUSIONS:
Although a comprehensive community programme against tobacco was not developed, the different prevention actions implemented in Italy have contributed to a change in attitude and behaviour. The effect of tobacco control strategies implemented in Italy until now is more evident in relation to the breaking of the smoking habit, which happens at an increasingly younger age, although it is not clear how much it is able to prevent people from starting smoking
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
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