1,721,168 research outputs found
Asini, muli e cavalli nelle tradizioni popolari siciliane
No full textIl saggio illustra gli impieghi di asini, muli e cavalli nel lavoro tradizionale contadino in Sicilia e i diversi contesti festivi in cui gli equini continuano tutt’oggi ad essere presentiThe essay illustrates the uses of donkeys, mules and horses in traditional peasant work in Sicily and the different festive contexts in which equines continue to be present toda
MESSA A PUNTO DI UNA METODOLOGIA PER LA MODELLAZIONE TRIDIMESIONALE E MULTISCALA DELL'IDROSTRATIGRAFIA, SU BASE GIS
Full text linkRealistic hydrostratigraphic models are necessary to compute the hydrological balance of surface vs. ground waters. In this perspective a key-sector of the Lombardy alluvial plain NE of Milan was selected to study the relations between Adda river and the phreatic nappe. The study focuses on a 10x10 km area close to Cassano d’Adda, that includes the local uppermost alluvial terraces (Middle Pleistocene glacio-fluvial sediments), the intermediate “Livello Fondamentale della Pianura” (Late Pleistocene sandur) and the lowermost post-glacial terraces within the Adda valley. In the subsurface, the transition between the northern glacio-fluvial alluvial fans and incised valleys, and the southern braided river deposits, occurs. This hinge corresponds to the transition from a single phreatic aquifer (North) to a stack of partly confined aquifer complexes (South), that is accompanied by emergence of the phreatic nappe along a belt of plain springs (“fontanili”). In this area many canals derive up to 95% of the discharge of the Adda river. In this work, the new geological and hydrostratigraphic model of the area is presented. The work is based on surface geology and subsurface stratigraphy, in a GIS environment linked with a 3-D modelling software, that allowed for a “try and error” procedure of stratigraphic correlation.
The results show the architecture of a large T-R sequence, from the marine Early Pleistocene to the present-day fluvial setting, punctuated by low-order cycles. The lowermost Geological Unit (GUO, Early Pleistocene) is formed by gently tilted marine shales with sporadic gravel and sand lenses. Three complex channelized sequences, with erosion relationships (GU1a-b-c) are incised into, and stacked above the marine deposits. These sequences are interpreted as the local effect of Middle Pleistocene eustatic cycles and uplift of the Alpine substratum. In this time the coastline moved at least three times from N to S, temporarily exposing the previous coast and shelf environments. The resulting incised valleys were filled by the three GU1 sub-units. The subsequent regional regressive pulse is witnessed by the glacio-fluvial sandur of GU2-3-4 (Middle Pleistocene), which buries the GU1 sequences, after a large south-eastward shift of the coastline. GU2-3-4 and the overlaying GU5 (Middle p.p. - Upper Pleistocene amalgamated gravels and sands) are separated by a very continuous red paleosoil throughout the entire study area. During latest Pleistocene (after LGM) decametric silt layers cover the ancient fluvio- glacial gravelly sediments. The Postglacial (PG) to recent sediments are confined within the Adda valley.
This geological reconstruction leads to a hydrostratigraphic scheme that includes: 1) Basal Aquiclude (GU0), laterally continuous at regional scale with local, small, confined and partitioned Aquifer systems ; 2) Intermediate Aquifer Group (GU1a-b-c) with a complex alternation of fining upwards sequences and juxtaposed gravel and fine-grained bodies due to erosion; 3) Uppermost Aquifer Group (GU2-3-4, GU5), decametric amalgamated gravel and sandy gravel units, locally separated fine-grained layers (preserved palaeosoils); 4) Shallow Aquitard (GU6, GU7) forming a discontinuous sandy silt cover above the underlying aquifers.
The geological and the hydrostratigraphic units have been modeled in 3-D, obtaining the maps of their boundaries, the location of their pinch-outs and the distribution of the internal genetic units (fining and coarsening upwards sequences). A descriptive statistic approach was used to characterize the sediments of these units. Multivariate analysis permitted to quantify the vertical and lateral variation trends of lithofacies and poro-perm properties.
The quantitative geological model yields the shape of the highest-order stratigraphic units within which the internal architecture and the permeability, porosity and electrical field gradients can be interpolated and/or simulated
Identità celate e pazzie non simulate: convenzioni e scene tipiche nell’“Eritrea” di Faustini e Cavalli
Full text linkL’Eritrea segna l’ultimo capitolo della decennale e proficua collaborazione tra Faustini e Cavalli, iniziata nel 1642 al Teatro di San Cassiano con La virtù de’ strali d’Amore e proseguita poi nella stessa sala con L’Egisto (1643), L’Ormindo (1644), La Doriclea e Il Titone (1645), infine consolidata con i drammi dati al S. Moisè (L’Euripo, 1649) e al S. Aponal. Come è già stato altre volte segnalato in passato (su tutti da Ellen Rosand nella sua monumentale monografia sulla “creazione” dell’opera veneziana) , i drammi per musica di Faustini e Cavalli rappresentano il nucleo prevalente della produzione operistica del
decennio 1642-1652. Il sodalizio tra i due fu decisivo per la codificazione e il consolidamento delle principali tendenze di scrittura del teatro d’opera veneziano sulla metà del secolo, attraverso una produzione di drammi costruiti a partire da alcuni loci letterari comuni, con intrecci che propongono una struttura destinata, di lì in avanti, a divenire canonica
Arthroscopic assisted bone grafting for early stages of Kienböck's disease
No full textKienböck's disease is known for its difficulty in being diagnosed and treated at early stages; option treatments are few and most of them quite aggressive. The author describes his experience with arthroscopic assisted lunate bone grafting. Three patients with diagnosis of stage I avascular necrosis of the lunate (average age: 45 years), were treated. Before surgical procedure, the patients underwent to a conservative treatment. After harvesting the bone graft from the volar surface of the radius, arthroscopic bone grafting was performed. At an average follow-up of 13.5 months (9-15), all the patients show a normal density of the lunate and no arthritic changes in radiographs. The MRI confirmed the lunate vascularity. The number of patients is definitely small, due also to the rarity of the disease and the difficulty in diagnosis, but, despite the very high learning curve, could be the proper first choice of treatment
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
Aquifer building and Apennine tectonics in a Quaternary foreland : the southernmost Lodi plain of Lombardy
No full textVariations 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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