1,721,052 research outputs found
INDAGINE ARCHEOMETRICA SU REPERTI DI MATERIALE CERAMICO RINVENUTI A BAKCHIAS (FAYYUM, EGITTO) NEL CORSO DELLA CAMPAGNA DI SCAVO DEL 1998
No full textMineralogical Analysis Applied to Forensics A Guidance on Mineralogical Techniques and Their Application to the Forensic Field
No full text
Clays from the Bay of Naples (Italy): New insight on ancient and traditional ceramics
No full textThe features of two clayey raw materials from the Bay of Naples and their fired products were investigated via minero-petrographic and physical techniques.Clay preparation and firing dynamics were performed following a process similar to that performed by ancient and traditional potters. A high-CaO marine clay from Ischia was mixed with different amounts of volcanic temper in order to replicate most common ware. These mixtures show a fair mechanical resistance starting from relatively low firing temperatures (>850◦C). The addition of temper resulted in different technological characteristics. A low-CaO weathered pyroclastics from the Sorrento Peninsula was prepared to simulate heat resistant and refractory ceramics. Fired products are characterised by a less resistant ceramic body up to 1000◦C compared to Ischia ceramics. Despite worse strength these ceramics show a porous structure, yielding better refractory performances
Production technology of mortar-based building materials from the Arch of Trajan and the Roman Theatre in Benevento, Italy
No full textThis research deals with the archaeometric study of mortars of two outstanding examples of Roman architecture in Benevento (southern Italy): The Roman Theatre and the Arch of Trajan. Mortars were analysed by means of a multi-analytical approach (i.e., polarized light microscopy, thermal analyses, infrared spectroscopy, scanning electron microscopy and energy-dispersed spectrometry) according to existing recommendations. Two different types of recipes were identified for the mortars of the Roman Theatre: a lime-based pozzolanic mortar and a hydraulic one, the hydraulicity of which, in both recipes, was due to the occurrence of natural pozzolanic admixture in air-hardening lime. As far as the Arch of Trajan is concerned, the investigated mortars are highly hydraulic as a consequence of the concomitant effect of a pozzolana-based aggregate and of a binder deriving from a marly-limestone-like stone. Although having the same function, the two different recipes identified for the bedding mortars of the Roman Theatre are clearly referred to different building phases of the monument associated to two out of the three documented construction phases
Irpinia e Sannio
No full textL’Itinerario interessa la Campania centrale e orientale, tra il basso Sannio
e l’alta Irpinia, in un territorio dominato da una morfologia collinare,
che racchiude un patrimonio geologico interessante e di grande variabilità.
Il percorso (Fig. 7.1) prevede la partenza da Telese Terme, nella bassa
Valle del Calore beneventano, e la conclusione a Fontanarosa, in provincia
di Avellino, con una distribuzione degli stop su circa 300 km, meglio
se ripartiti in due giorni, con pernottamento a Vallesaccarda.
Il paesaggio attraversato si presenta piuttosto articolato, sviluppandosi
in prevalenza tra aree vallive e di alta collina, con rilievi raramente aspri
e che non superano i 1.000 m di quota. Va, a questo proposito, rilevato
che nella stagione invernale le frequenti nevicate rendono impegnativa
la percorrenza della viabilità interna. L’abbigliamento consigliato è quello
escursionistico, da valutare in relazione alla stagione, ma è buona norma
avere con sè un impermeabile perché, soprattutto d’estate, non sono rari
i temporali pomeridiani
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
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