1,721,074 research outputs found
Antichi libri d'America. Censimento romano: 1493-1701
No full textRepertorio ragionato di libri a stampa (inclusi incunaboli) sulle Americhe pubblicati dal 1493 al 1701 e conservati in alcune biblioteche romane (Biblioteca Nazionale, Biblioteca Vaticana, Biblioteca Casanatense, Biblioteca Gesuitica
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
Verso una revisione dell’inquadramento cronologico e morfometrico delle serie scheletriche paleo-protosarde. II: craniometria, ulteriori aggiornamenti.
No full text3D numerical modeling of the Pisa coastal plain (North-Western Tuscany)
No full textSince prehistoric times, the Pisa coastal plain, lowest portion of the Arno and Serchio Rivers basins, was the preferred site for human settlements. It was therefore involved in important drainage and hydraulic reclamation works. They began before Roman Empire and produced an almost entirely artificial hydrographic network, including significant modifications to large part of the main river courses. In the last two centuries, population quick rise, urban centers, tourist and industrial activities growth raised both water and dry land demand. Irrational water pumping near the coast produced severe seawater intrusion in the coastal aquifers.
3D finite differences numerical simulations (Visual Modflow 4.2) were applied to the phreatic aquifer of the Pisa coastal plain (Wide Area Model - WAM), with dedicated zooms on the densely inhabited areas of Marina di Pisa and Tirrenia. In particular, the WAM has his boundary at the Arno River to the North, the Navicelli Canal to the East, the Scolmatore Canal to the South and the seashore to the West. The WAM output was used as boundary condition to implement the zoomed models of Marina di Pisa and Tirrenia (Visual Modflow Seawat code).
The work required a first step of acquisition, systematization and processing of bibliographic and field data, in order to build the geological and hydrogeological conceptual model; the conceptual model was then translated into numerical input.
The implementation of the numerical model based on the hydrostratigraphic structure, rainfall pattern, thermometric and piezometric data collected from October 2007 to December 2009 (calibration stage), as well as on the unconfined and first confined aquifer salinity data logs, and on the main hydraulic parameters (hydraulic conductivity, porosity, storage coefficient) of the studied aquifer. The unconfined aquifer, 10-15 m thick, is hosted in sandy coastal dunes, characterized by medium-high hydraulic conductivity (K ≈ 10-2 cm/s) and overlies an aquiclude (K ≈ 10-7 cm/s) generally constituted by clay and silty clay.
Besides numerical modeling the correlation between rainfall and piezometric level data was analyzed in order to identify the phreatic aquifer recharge time. For almost all the monitored piezometers, a high correlation coefficient (0.75<R2<0.85) between rainfall and water table data was detected for a span of 75 days. The identified correlation helped the model simulations interpretation.
The WAM was implemented and calibrated in order to analyze the water flow system, while the zoomed models of Tirrenia and Marina di Pisa were carried out and calibrated to calculate the extent and saline content of the seawater intrusion. The results reached a significant statistical correspondence to observed data sets. Regarding Marina di Pisa and Tirrenia models, simulation was also performed to forecast possible future scenarios relating the water table trends and seawater intrusion.
Both models show a modest degree of seawater intrusion near the shoreline. In particular, in the Marina di Pisa area, close to the dune system, the seawater intrusion is just a thin level below a thick freshwater body. On the other hand, in the Tirrenia area the salt water completely saturated the unconfined aquifer. In the internal portion of the study area, between the dune system and the Navicelli Canal, in ancient times characterized by lagoons, marshes and swamps, the salt content raises, from high to very high for the whole thickness of the aquifer.
In conclusion, the simulation models show the important role of the natural dune system as freshwater pseudo-hydrostatic barrier, effectively contrasting the seawater intrusion in the unconfined costal aquifer. Moreover, simulations identified the main cause of the seawater intrusion in massive pump driven dewatering by the artificial drainage network, which causes a significant lowering of the water table, from 1.70 to 2.50 below the sea level
Inglese con la LIM alla scuola primaria
No full textIn questo libro gli insegnanti troveranno le riflessioni di esperti di applicazioni delle nuove tecnologie nell’ambito della didattica dell’inglese come L2 e tre moduli didattici per la scuola primaria.
Il volume fa parte della collana «CLIM (Classe Interattiva Multimediale)», che mette a disposizione degli insegnanti della scuola primaria e della secondaria di primo grado gli studi e gli strumenti più aggiornati sulla didattica con la Lavagna Interattiva Multimediale (LIM) e, più in generale, con le nuove tecnologie.
L’obiettivo è di far acquisire le competenze teoriche e pratiche per introdurre in aula i dispositivi didattici digitali — primo fra tutti la Lavagna Interattiva Multimediale — attraverso la presentazione di alcuni percorsi di insegnamento e delle modalità corrette per allestire e gestire i materiali inclusi in ogni volume della serie (italiano, storia, scienze, ecc.)
Modulatory effect of mycobacterial heat schock protein 70 in DNA vaccination against lymphoma. Haematologica
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