1,721,181 research outputs found
Heron’s Legacy: An Example of Ancient Calculations Applied to Roman Imperial Architecture
Full text linkHeron of Alexandria is a well-known author in the field of mathematics and engineering,
but his work is of great interest for understanding ancient construction
problems related to architecture. The formulas translated and commented on by
Heiberg (1914a, b) are analyzed through geometric diagrams and applied to famous
Roman domed architecture
Nascita pretermine e pattern interattivi precoci madre-bambino: confronto tra ELBW e VLBW
No full textINTRODUZIONE: La prematurità rappresenta un'esperienza traumatica per il bambino e per il genitore, e può influenzare lo sviluppo infantile e la qualità delle interazioni precoci. Condizioni a maggiore rischio sono le nascite con peso ≤ 1500 (VLBW) e 1000 grammi (ELBW), dove la lunga ospedalizzazione, ostacola la co-costruzione dell’interazione diadica. Gli studi sui pattern interattivi nei nati pretermine mostrano risultati contrastanti, legati in parte ad un’eterogeneità dei fattori di rischio, soprattutto il peso alla nascita. Obiettivo dello studio è analizzare l'effetto dei livelli di severità della prematurità sui pattern interattivi precoci materni ed infantili, a confronto con diadi a termine.
METODO: La ricerca coinvolge 75 diadi madre-bambino prematuro (33 VLBW; 42 ELBW), reclutate presso l’U.O. di TIN dell’Ospedale Bufalini (Cesena), e 71 diadi madre-bambino a termine (GC), selezionate ai corsi preparto. Criteri inclusivi per entrambi i gruppi sono: a) assenza di anomalie alla nascita; b) nazionalità italiana dei genitori; c) domicilio fisso.
A 3 mesi e.c. le famiglie sono state incontrate al Laboratorio di Psicodinamica dello Sviluppo (Facoltà di Psicologia, Cesena), dove viene videoregistrata l’interazione madre-bambino, poi codificata mediante le Global Rating Scales of Mother-Infant Interactions (Murray et al., 1996), e viene inoltre valutato il livello di sviluppo con le Griffiths Development Mental Scales (Griffiths, 1996).
RISULTATI: Sulla base delle analisi preliminari, gli ELBW mostrano risultati inferiori (peggiori) a quelli degli altri gruppi nelle seguenti dimensioni: Active Communication e Happy-Distressed (rispetto ai VLBW), Lively e Fretful (confrontati a GC). Le loro madri appaiono più richiedenti, meno sensibili rispetto ai VLBW e più intrusive di quelle di GC.
CONCLUSIONI: Nei prematuri, lo sviluppo dei pattern interattivi precoci è modulato dal grado di severità della nascita
Composition and Shape of Hadrianic Domes
Full text linkIn-depth studies on the design of the domes of the Octagonal Hall of the Small Baths and the Vestibule of the Golden Court at Hadrian’s Villa in Tivoli have been conducted starting from 3D surveys carried out with active and passive sensors. Through the comparison of the ichnographia and orthographia of these emblematic examples of architectural experimentation, common elements and features have emerged which, thanks to the integrated use of new measurement technologies, have allowed us to hypothesise dimensioning systems of the vertical structures together with possible criteria for defining the intrados–extrados relationship. Hadrian’s architects’ use of precise grid-based designs to facilitate the achievement of target quantities (required areas and volumes) as well as modules aimed at defining alignments of horizontal and vertical structures emerge clearly, providing useful elements for an integrated reading of the individual buildings to support the archaeological investigation
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
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