Search results for "git"
showing 10 items of 7116 documents
Subduction-related origin of eclogite xenoliths from the Wajrakarur kimberlite field, Eastern Dharwar craton, Southern India: Constraints from petrol…
2015
Abstract Major and trace elements as well as the first oxygen isotopes are reported on eclogite xenoliths from the Mesoproterozoic KL2 and P3 kimberlite pipes of the Wajrakarur kimberlite field, Eastern Dharwar craton, Southern India. Garnets in kyanite-bearing samples are rich in grossular, whereas they are predominantly pyrope-almandines in the bimineralic (kyanite-free) samples. The kyanite eclogite from the P3 pipe is more Mg-rich than those from KL2 pipe. Equilibration temperatures indicate derivation from 4.5 to 5.3 GPa and 1060 to 1220 °C for the KL2 samples and 3.6 GPa, 918 °C for the P3 sample. Garnet rare earth element patterns show two characteristic types, one with relatively lo…
Tecnologia, socialità e didattica nella geografia contemporanea. Un’introduzione
2018
La digitalizzazione investe la percezione, la costruzione e l’uso dello spazio, poiché è in grado di (ri)definire nuove frontiere rendendo meno scontata la sua dimensionalità. Si tratta di una dinamica che assume interessanti risvolti per la prospettiva geografica. Il contributo è l'introduzione al volume curato dagli stessi autori.
Càlcul de coordenades geogràfiques a partir de les estrelles: una proposta didàctica entre les matemàtiques i l'astronomia
2016
[EN] This paper presents a didactical proposal for 11th grade students. The purpose of the activities is to show the relationship between astronomy and mathematics, specifically with the calculation of both geographic coordinates: latitude and longitude. The methodology used encourages independent work of students by using interactive digital applications and manipulative materials. These ressources allow students to work more easily with threedimensional geometry concepts that, otherwise, are abstract for them. The proposal is based on a classic problem: find the exact geographic position of any point on the Earth.
How the Covid-19 Pandemic Is Changing Online Food Shopping Human Behaviour in Italy
2020
The advent of the Internet has significantly changed consumption patterns and habits. Online grocery shopping is a way of purchasing food products using a web-based shopping service. The current COVID-19 pandemic is determining a rethinking of purchase choice elements and of consumers&rsquo
Ruined Archeological Heritage: Survey, 3D Modeling, Virtual Anastylosis.
2013
The study focuses on the use of 3D surveying and digital representation tools for the purpose of documenting archaeological monuments whose restoration involves the disassembly and repositioning of blocks. The case study in question is a building at the west end of the San Biagio archaic sanctuary, located within the archaeological site of Agrigento. The monument is a rectangular building encompassing two pools, whose foundations are suffering from deep decay and there are large spaces between the walls which have become disconnected. Surveying and 3D modelling have been used to illustrate the existing state of the building. Plans, sections and orthophotos have been created to support the …
Identifying the characteristics of China’s maritime trading partners on the basis of bilateral shipping connectivity: a cluster analysis
2021
China is ranked as the number one maritime connected country in the world. This study attempts to analyse the characteristics of its 155 maritime trading partners. Five components of maritime conne...
Sensitivity of the C-band SRTM DEM Vertical Accuracy to Terrain Characteristics and Spatial Resolution
2008
This work reports the results of a careful regional analysis of the SRTM DEM (Shuttle Radar Topography Mission – Digital Elevation Model) vertical accuracy as a function of both topography and Land-Use/Land Cover (LULC). Absolute vertical errors appear LULC-dependent, with some values greater than the stated accuracy of the SRTM dataset, mostly over forested areas. The results show that the structure of the errors is well modeled by a cosine power n of the local incidence angle (θloc). SRTM quality is further assessed using slope and topographical similarity indexes. The results show a lower relative accuracy on slope with a R2 = 0.5 and a moderate agreement (Kappa ≈ 0.4) between SRTM- and …
Il soffitto a muqarnas della Cappella Palatina
2019
Nel saggio vengono indagati i temi del rilievo, della documentazione digitale 3D, dello studio delle geometrie e della divulgazione multimediale del soffitto ligneo a muqarnas della Cappella Palatina nel Palazzo Reale di Palermo.
Time of formation and peak of Variscan HP-HT metamorphism of quartz-feldspar rocks in the central Erzgebirge, Saxony, Germany
1998
The Variscan Erzgebirge represents an antiform with a core of gneisses and mica schists, surrounded by a phyllitic mantle. The Gneiss-Eclogite Unit (GEU), in the central part, is a composite tectonometamorphic assemblage characterized by a HP-HT imprint and comprises migmatitic para- and orthogneisses, HT mylonites, HP granulites, eclogites and garnet peridotites. It is tectonically sandwiched between two major units with distinctly lower PT histories. The GEU experienced a characteristic “kinked” retrograde PT path after HP-HT equilibration with: (1) strong near-isothermal decompression at high temperatures; (2) extensive re-equilibration at medium pressures, followed (3) by rapid cooling …
Eastern Pontides and Black Sea: gravity inversion, crustal structure, isostasy and geodynamics
2002
Abstract Lacking detailed seismic data on the crustal structure of Anatolia and the transition to the Black Sea, it is attempted to invert gravity for crust-mantle structure with constraints from the limited a priori information available, as average continental and oceanic crust, local topography, an isostatic model, published marine seismic data and a tentative “fix point” from recent seismological receiver functions near the Black Sea coast. An initial 2D-model for a north–south profile along about 40°E longitude is constructed and adjusted to fit the Bouguer anomaly taken from a published Turkish map and results from satellite radar altimetry. Isostasy, seismic data and gravity inversio…