171,983 research outputs found
L. Jeannin, M. Meneghini, C. Pauti, R. Poupet, Le droit d'asile en Europe. Étude comparée
No full textL. Jeannin, M. Meneghini, C. Pauti, R. Poupet, Le droit d'asile en Europe. Étude comparée. In: Revue internationale de droit comparé. Vol. 52 N°1, Janvier-mars 2000. pp. 269-270
Carta geologica dell'Isola d'Elba
No full textOperatori Ing. B. Lotti, Ajut. P. Fossen per la parte petrografica Ing. E. Mattirolo coll'alta direzione scientifica del Prof. G. Meneghini, pres. del R. Comitato geologic
Temporal analysis of GDOP to quantify the benefits of GPS and glonass combination on satellite geometry
No full textGlobal Navigation Satellite Systems (GNSS) have developed rapidly over the last few years. At present, there are GNSS receivers that combine satellites from two or more different constellations. The geometry of the satellites in relation to the receiver location, i.e. how nearly or distantly they are disposed in the sky, impacts on the quality of the survey, which is essential to achieve the highest level of position accuracy. A dimensionless number identified as Geometric Dilution of Precision (GDOP) is used to represent the efficiency of the satellite distribution and can be easy calculated for each location and time using satellite ephemeris. This paper quantifies the influence of multi-GNSS constellation, in particular GPS (Global Positioning System) and GLONASS (Globalnaya Navigazionnaya Sputnikovaya Sistema) combination, on satellite geometry considering a precise period. A new index named Temporal Variability of Geometric Dilution of Precision (TVGDOP) is proposed and analyzed in different scenarios (different cut-off angles as well as real obstacles such as terrain morphology and buildings). The new index is calculated for each of the two satellite systems (GPS and GLONASS) as well as for their integration. The TVGDOP values enable the three cases to be compared and permit to quantify the benefits of GNSS integration on satellite geometry. The results confirm the efficiency of the proposed index to highlight the better performance of combination GPS+GLONASS especially in presence of obstacles
L. Jeannin, M. Meneghini, C. Pauti, R. Poupet, Le droit d'asile en Europe. Étude comparée
No full textL. Jeannin, M. Meneghini, C. Pauti, R. Poupet, Le droit d'asile en Europe. Étude comparée. In: Revue internationale de droit comparé. Vol. 52 N°1, Janvier-mars 2000. pp. 269-270
Use of Mercator cartographic representation for Landsat 8 imageries
No full textNowadays Marine Geographical Information Systems (MGIS) play an essential role in several research activities, the most part of them related to solve Geoscience problems. The nautical maps, containing most of the information used by the marine navigators, are used as cartographic base of MGIS and widely referred to Mercator projection. Remotely sensed images can be introduced in MGIS to improve the study outcomes even if they are in a different cartographic representation (generally Universal Transverse of Mercator, UTM). The adaptation of already georeferred remotely sensed images to Mercator projection requires particular care, moreover when also geodetic data are different (i.e. local datum and global datum). This paper is aimed to offer an easy-to-use work-flow that could be adopted every time remotely sensed images are to be introduced in MGIS and overlaid to nautical maps. Particularly the work addresses the implementation and evaluation of reprojection of Landsat 8 imageries, regarding both the gulfs of Naples and Salerno (Italy): a transformation from UTM WGS84 to Mercator Roma40 is applied. The result accuracy encourages the adoption of the proposed work-flow
La mia idea di dislessia evolutiva: un confronto tra profili di insegnanti
No full textCome per i concetti di salute e malattia (Zani, et.al., 2000) per quello di dislessia evolutiva è importante individuare quali definizioni/culture della dislessia esistono in una popolazione, i significati socialmente costruiti, come essi sono in rapporto con le rappresentazioni scientifiche. Ciò, se influisce sulla relazione adulto/bambino dislessico, è ancora più importante se si considera l’interazione insegnante/alunno dislessico perchè essa ha indubbie ripercussioni sul futuro scolastico (e non solo) dell’allievo. La ricerca mira a evidenziare le rappresentazioni che gli insegnanti hanno della dislessia e dell’efficacia di alcune procedure didattiche da utilizzare con l’alunno dislessico. In particolare saranno presi in considerazioni “profili” comuni all’interno di un gruppo di docenti, evidenziando eventuali differenze di rappresentazioni tra scuola elementare e scuola media. Il questionario (costruito partendo da interviste pilota, letteratura) si articola in 3 sezioni: 1) introduttiva: dati sul rispondente; 2) rappresentazione sociale, riguardante l’idea di dislessia, della sua eziologia e interventi relativi; 3) strumenti didattici, riguardante l’efficacia percepita di alcune procedure didattiche (tratta da Novelli, 2005). Il questionario è anonimo e è stato distribuito a 250 insegnanti di Verona e provincia. I dati saranno trattati con analisi della varianza per il confronto tra sottogruppi e con cluster analysis (come suggerito in Mannetti, 1990) per individuare raggruppamenti di profili soggettivi che rispecchiano rappresentazioni vicine tra loro. I profili emersi verranno posti in relazione con le risposte della sez. 3
THE HIGH TEMPERATURE P21/C-C2/C PHASE TRANSITION IN Fe-FREE CA-RICH P21/C CLINOPYROXENES
No full textThe high temperature P21/c-C2/c phase transition in Fe-free Ca-rich P21/c clinopyroxenes
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