Search results for "sun"
showing 10 items of 935 documents
A scenario-based assessment of the tsunami hazard in palermo, northern sicily, and the southern tyrrhenian sea
2020
Palermo is a populous city situated on the northern coast of Sicily, bordered by the Tyrrhenian Sea. This central part of the Mediterranean Sea features dramatic bathymetry, numerous subaqueous landslides and is also the epicentre to many subaqueous earthquakes. As such, the region is an area prone to tsunamis. This investigation uses the Cornell Multi-Grid Coupled Tsunami (COMCOT) tsunami modelling package to simulate five near-field landslides, and five near-field earthquakes regarded as worst-case credible scenarios for Palermo. The seismic simulations produced waves on a very small scale, the largest being c. 5 cm at its maximum height, and none of the earthquake-generated tsunami waves…
An improved photographic method to estimate the shading effect of obstructions
2012
Abstract A new photographic method is presented to evaluate the shading effects of obstructions on surfaces exposed to the sun. The method overcomes the difficulties caused by the need to accurately describe the surrounding objects to estimate the shading effects by means of the usual tools that use the spatial reconstruction of obstructions or cylindrical or polar suncharts. The photographs of the surrounding objects are used as the background on which the solar disc is depicted at the various hours of the day. In this way it is easily detectable if the sun is visible from the place where the photographs were taken or if the surrounding obstructions obscure the sun. In spite of the complex…
A photographic method to estimate the shading effect of obstructions
2012
Abstract A new, simplified photographic method is proposed to estimate the shading effects of obstructions. In spite of the complex mathematical background of the new tool, its practical application is very simple, and only requires the measurements of three angles for each photograph. The proposed method is particularly useful for overcoming the difficulties caused by the need to accurately describe surrounding objects to estimate shading effects. The new method uses the information contained in a picture and allows one to draw daily solar paths directly on the photograph. The procedure is useful to verify the suitability of a generic site for solar exploitation; its main benefit is the si…
Genetic algorithm-based calibration of microscopic traffic simulation model for single-lane roundabouts
2017
A calibration procedure for microscopic simulation models based on a genetic algorithm is proposed. Focus is made on single-lane roundabouts for which many random factors such as gap- acceptance affect operations. A comparison is performed between the capacity functions based on a meta- analytic estimation of critical and follow up headways and simulation outputs of a roundabout built in Aimsun microscopic simulator. Aimsun parameters were optimized using the genetic algorithm tool in MATLAB® which automatically interacted with Aimsun through a Python interface. Results showed that applying the genetic algorithm in the calibration process of the microscopic simulation model, a good match to…
Artificial neural networks for fault tollerance of an air-pressure sensor network
2017
A meteorological tsunami, commonly called Meteotsunami, is a tsunami-like wave originated by rapid changes in barometric pressure that involve the displacement of a body of water. This phenomenon is usually present in the sea cost area of Mazara del Vallo (Sicily, Italy), in particular in the internal part of the seaport canal, sometimes making local population at risk. The Institute for Coastal Marine Environment (IAMC) of the National Research Council in Italy (CNR) have already conducted several studies upon meteotsunami phenomenon. One of the project has regarded the creation of a sensors network composed by micro-barometric sensors, located in 4 different stations close to the seaport …
Delle presunzioni: nozione
2010
La nueva regulaciòn del contrato por proyecto en el ordenamiento italiano
2015
El estudio, desde la perspectiva de una reconstrucción general del trabajo económicamente dependiente en el ordenamiento italiano, examina las modificaciones que introdujo la Ley de reforma del mercado de trabajo de 2012 en el contrato por proyecto y en la regulación de otros tipos de trabajo por cuenta propia, como las –así llamadas– falsas partite IVA
Il lavoro a progetto dopo la legge n. 92/2012
2015
Il saggio analizza i cambiamenti apportati dalla cd. legge Fornero alle forme di lavoro economicamente dipendente . Costituiscono aspetto di indagine, in particolare, il lavoro a progetto e le cd. false partite IVA.
Le proposte di modifica dell'impugnazione del licenziamento: un passo avanti e due indietro.
2009
Politiche della sicurezza e libertà personale dell’accusato tra incubazioni dell’insicurezza sociale e manovre reattive
2019
Gli strumenti restrittivi della libertà personale dell’accusato contrassegnano l’area che, più di ogni altra, assicura efficacia immediata all’intervento reattivo dello Stato a fronte di fenomeni criminali fomentatori di insicurezza sociale: è per questo che le politiche della sicurezza così di frequente adoperano in termini privilegiati questa leva. I costi possono, tuttavia, essere cospicui: scelte troppo disinvolte, propiziate da confusi interscambi tra sicurezza ed emergenza, finiscono - come non di rado è accaduto - per porre concretamente in crisi la centralità della presunzione di innocenza, conducendo a perniciosi corti circuiti tra finalità cautelari e scopi preventivi di tipo sost…