1,720,968 research outputs found
Dai Centri Interdipartimentali alla Scuola di Specializzazione: il dibattito e le esperienze
No full textIl saggio ripercorre, in primo luogo, i punti salienti di un doppio, e talvolta parallelo, percorso legislativo verso l'istituzione della Scuola di Specializzazione per insegnanti di Scuola Secondaria. Lo scopo è quello di mostrare la problematicità pedagogica ed organizzativa e la complessità di un processo che coinvolse, negli anni '90, il Ministero dell'Università e quello della P.I., oltre ai Centri Interdipartimentali attivi a livello degli Atenei più interessati a rendere operativo il dettato della legge n. 341/1990.
In secondo luogo, il saggio mette in rilievo i temi principali del dibattito tra i docenti titolari delle diverse discipline e le differenti proposte che emersero il quel periodo in cui vennero messe in campo idee e risorse straordinarie al fine di operare un reale rinnovamento nella formazione degli insegnanti non solo di scuola secondaria, ma anche di scuola elementare. Si veda, nel merito, l'istanza di tenere collegati i due progetti di fattibilità nella formazione universitaria con i programmi/orientamenti e gli ordinamenti
Slope instability and erosional features of the Ligurian Margin
No full textThe recent conclusion of the Magic Project (Marine Geohazards along the Italian Coasts) (Chiocci & Ridente, 2011), the MALISAR Cruises (Migeon et. Al., 2011; Migeon et al., 2012) and the contribution of the data available at
the Universities of Genoa (IT) and Trieste (IT) allowed us to identify and study the large series of erosional and gravitative phenomena along the Ligurian continental margins. The dataset allowed us to relate the structural
evolution of the Ligurian Basin, the characteristics of the sedimentation, the erosive action of a dense canyon network and the gravitational phenomena (Corradi et al., 2002).
The Ligurian Sea is the northwestern portion of the Mediterranean Sea. It originated from the roto-translation of the Corsica-Sardinia Block and is connected to the Apennine orogenic dynamics (Fanucci & Morelli, 2000). The
complex geological evolution of the Liguran Sea brought to the division of this basin in different physiographic domains. The main one is the Valley of Genoa that separates the margin of the Alpine area from the Apennines one,
which developped in a portion of the newly formed chain. The evolution of the two margins, mainly controlled by extensional tectonics processes, was interrupted by compressional and/or transpressive reactivations, which gave
particular characteristics to the margins (Fanucci & Morelli, 2013; Sage et al., 2013; Sage et al., 2014).
The Alpine margin is characterized by high seismicity, high sedimention rate and steepness of the margin, determining massive and unstable sedimentary masses along the slope, which are carved by a dense network of
canyons.
It is in the western Liguria sector that these erosive features are extensively represented until the "Dorsal of Imperia", a structural element that runs parallel to the margin for about 50-60 kilometers. Its genesis can be attributed to
the effects of a compressive deformation and this structure isolated an intra-slope basin in which huge quantities of sediments were accumulated and drained by canyons and conveyed in the Valley of Genoa, through the
Canyon of Vado.
The continental margin between the City of Genoa and the Portofino Promontory is characterized by the two main canyons of the Ligurian Gulf: the Polcevera and the Bisagno canyons. These are in continuity with their
respective rivers and almost entirely eroded a thick Plio-Quaternary sequence.
The Apennine margin presents a less complex structure than the Alpine one (Fanucci & Morelli, 2006); however, large gravitative phenomena are present. The most important is the Portofino Landslide, located in front of the
corresponding promontory. It is mainly characterized by rotational slips and incipient detachment niches, stimulated by the erosion at the base by the Levante Canyon. This last, oriented along the Apennine tectonic lineations,
produces significant erosion, both on the head than along its way, which is almost parallel to the coast until its confluence in the Bisagno Canyon.
References
Chiocci F.L. & Ridente D. 2011. Regional-scale seafloor mapping and geohazard assessment. The experience from the Italian project MaGIC (Marine Geohazards along the Italian Coasts). Mar. Geophys. Res., 32 (1-2),
13-23.
Corradi N., Cuppari A., Fanucci F. & Morelli D. 2002. Gravitative instability of sedimentary masses on the Ligurian Sea margins. GeoActa, 1, 37-44.
Fanucci F.,& Morelli D. 2000. Caratteri e cronologia della deriva del Blocco Sardo-Corso. Atti Ass. It. Oceanol. Limnol., 13 (2), 167-181
Fanucci F.,& Morelli D. 2006. Assetto strutturale ed evoluzione polifasica del Margine appenninico tra Portofino e La Spezia. Rend. Soc. Geol. It., http://hdl.handle.net/11368/1693875
Fanucci F.,& Morelli D. 2013. Rapporti tra morfologia e tettonica sul margine continentale ligure. http://hdl.handle.net/11368/2768328
Migeon S., Cattaneo A., Hassoun V., Larroque C., Corradi N., Fanucci F., Dano A., Mercier de Lepinay B., Sage F. & Gorini C. 2011. Morphology, distribution and origin of recent submarine landslides of the Ligurian
Margin (North-western Mediterranean): some insights into geohazard assessment. Mar. Geophys. Res., 32 (1-2), 225-243.
Migeon S., Cattaneo A., Hassoun V., Dano A., Casedevant A. & Ruellan E. (2012). Failure Processes and Gravity-Flow Transformation Revealed by High-Resolution AUV Swath Bathymetry on the Nice Continental Slope
(Ligurian Sea). Advances in Natural and Technological Hazards Research, 31, 451-461.
Sage F., Beslier M.O., Gaullier V., Larroque L., Dessa J.X., Mercier de Lepinay B., Corradi N., Migeon S., Katz H., & Ruiz Constan A. 2013. Partitioning of deformation along a reactivated rifted margin:example of the northern
Ligurian margin. Geophys. Res. Abs. Vol. 15. http://hdl.handle.net/11567/692573.
Sage F., Beslier M.O., Dessa J.X., Schénini L., Watremez L., Mercier de Lépinay B., Gaullier V., Larroque C., Béthoux N., Corradi N., Bigot A., Migeon S., & Ruiz Constan A. 2014. Inversion of back-arc basins: example of the
LigurianBasin, Western Mediterranean. Geophys. Res. Abs. Vol. 16, EGU2014¬15668, http://hdl.handle.net/11567/692574
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
Le ricerche empiriche sugli insegnanti: prospettive storiche e problematiche emergenti
No full textIl saggio ripercorre le principali ricerche empiriche sugli insegnanti in Italia; in particolare vengono prese in esame le ricerche condotte in ambito pedagogico e i risultati che da esse sono scaturiti in relazione ai bisogni di formazione degli insegnanti. Vengono inoltre analizzate le ricerche valutative sui curricoli universitari per la formazione iniziale dei docenti a partire dal 1999, al fine di approfondire il dibattito scientifico su insegnanti e formazione e sulle sue ripercussioni nel dibattito politico-istituzionale
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
Il Questionario: opinioni e atteggiamenti degli specializzati
No full textIl saggio presenta le ipotesi specifiche e i risultati di un'indagine quantitativa - effettuata attraverso un questionario di opinione e di atteggiamento - su di un campione rappresentativo di insegnanti specializzati presso la SSIS di Bologna.
I risultati vengono presentati dapprima rispetto alle variabili indipendenti analizzate (caratteristiche assegnati dei soggetti, percorso di formazione, motivazione all'insegnamento, impegno nella scuola e soddisfazione professionale) e, in seguito, rispetto alle correlazioni tra variabili indipendenti e le variabili dipendenti: valutazioni del curricolo formativo della SSIS, convinzioni educative sulla scuola e la professione docente
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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