1,721,078 research outputs found
Thermal behaviour and kinetics of dehydration of gypsum from in-situ real-time laboratory parallel-beam X-ray powder diffraction
No full textLocal Freshwater Appropriation Assessment in a wood-energy supply chain in Sardinia
No full textIn the present work, the assessment of the freshwater appropriation for
the future energy production by using forest residues will be discussed.
Reference has been made to the methodology known as Water Footprint
Assessment. The main objectives are related to the analysis of the
appropriation of freshwater, by dividing the water volumes related to each
component of an hypothetical small supply chain and by separating both
the internal and external shares, with respect to the preset boundaries.
Those ones are the limits of the Monte Olia public forest, which is located
in the Northern side of Sardinia Island (Italy). This assessment of the
freshwater appropriation is a valid tool in the wood-energy supply chain
design, in the view of a more sustainable local water management
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
Multidisciplinary approach to the characterisation of roman gravestones from Aquileia (Udine, Italy)
No full textGeomorphology, stratigraphy and facies analysis of some Late Pleistocene and Holocene key deposits along the coast of Sardinia (Italy)
No full textTwo major synthems have been recognised along the coasts of Sardinia. The older one is composed of
two sub-synthems, the oldest of which was formed in high-energy boulder beaches, and is a thin
condensed transgressive sequence usually located at the foot of a marine cliff. The overlying sub-synthem was generated by aeolian, slope, interdunal ponds and alluvial depositional environments. It is
widespread, and terraces and relict dune fields are usually deeply dissected. Its deposition is associated
with a cold and arid climate. The aeolian and alluvial deposition was interrupted by the evolution of
steppe-prairie soils. A more evolved reddish brown Bt paleosol is locally found at the top of the sequence.
The younger synthem is made of beach and coastal lagoon and swamps. It is more variable in thickness,
rests unconformably over the older, one and has no sedimentary cover. It is laterally correlated to the
present-day depositional environments such as alluvial plains and beaches. Unfortunately, because beach
deposits of this synthem are found up to 6 m asl and a marine notch is present at 5–6 m (Capo San
Marco), the widespread idea that Sardinia is a stable area and that marine sea level during the Holocene
was never higher than nowadays led to their previous attribution to MIS 5e. However, all the stratigraphic,
geomorphic and pedological evidence indicates that only the older sub-synthem can be correlated with the MIS 5e high stand. The younger sub-synthems made of aeolian lacustrine and alluvial deposits at Cala Gonone, Santa Reparata, Capo S.Marco and S.Giovanni di Sinis were deposited during the rest of the Late Pleistocene. The younger synthem evolved during the Holocene, and this is the chronological setting of the beach deposits at Is Arenas, Scala e ́ Croccas, Santa Reparata, and Capo San Marco.
Radiocarbon dating confirms these attributions. Unfortunately, OSL dating suggests an older chronology
for these deposits, and therefore it seems that further investigations are needed
Stable or mobile sea-level, stable or mobile Sardinia during the Holocene: evidence from the Cagliari Gulf
No full textThe new Sheet “557” Cagliari (CARG Project) produced a map of the Quaternary Syntems, however the
results of the new radiometric datings were not exhaustive and sometimes contradictory. The groups working on continental and marine areas reached different conclusions on the chronology of the deposits: some coastal deposits have been included in the subsynthem of Cala Mosca (Tyrrhenian) although we should refer them to the Holocene. However, the distribution of the Tyrrhenian deposits was reduced and the Is Arenas beach ridge grouped within the Holocene. We report the elements supporting a Holocene age for the coastal deposits
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