Search results for "Rift"

Il Bello, l’Idea e la Forma. Studi in onore di Maria Concetta Di Natale

2022

L'opera, in due volumi, contiene 125 contributi di docenti e studiosi, nazionali e non italiani, su argomenti che spaziano ampiamente nel campo della storia dell'arte, sia cronologicamente che geograficamente, che sono stati ordinati e raccolti per sezioni relativamente all'ambito di interesse prevalente.

Shortage of Sediments in the Maspalomas Dune Field (Gran Canaria, Canary Islands) Deduced from Analysis of Aerial Photographs, Foraminiferal Content,…

2007

Abstract The Maspalomas dune field and adjacent beaches are the most extensive coastal sedimentary environment on the island of Gran Canaria. This area is very important from both a natural and an economic perspective. The analysis of aerial photographs and satellite images from recent decades does not show important shoreline changes for the El Ingles and Maspalomas beaches, which can be considered, consequently, in a state of equilibrium. However, the Maspalomas dune field presents several modifications, such as aeolian corridors associated with beach kiosks, a significant reduction in thickness of the aeolian deposits, and an increase of deflation areas in the underlying substratum. All …

Surface sediment dynamics along the Tunisian coast at Skhira (Gulf of Gabès, south-eastern Tunisia)

2015

Abstract An investigation was conducted in the summer of 2012 at 24 study stations along the Tunisian coast near Skhira (south-eastern Mediterranean Sea) through high resolution of analyses, grain size and mineral composition of surface sediment. An Acoustic Doppler Current Profiler showed Skhira's main coastal current to follow a direction 60°E, with its main axis south-west/north-east parallel to the coastline and its minor axis east-west. Current speeds were approximately 13 cm s−1 and 4.5 cm s−1 for the major and minor axes, respectively. Parallel to the coast, currents were generally mild to moderate, but often exceeded 20 cm s−1. An Argonaut meter recorded the dominant current directi…

Baseline design of the filters for the LAD detector on board LOFT

2014

The Large Observatory for X-ray Timing (LOFT) was one of the M3 missions selected for the phase A study in the ESA's Cosmic Vision program. LOFT is designed to perform high-time-resolution X-ray observations of black holes and neutron stars. The main instrument on the LOFT payload is the Large Area Detector (LAD), a collimated experiment with a nominal effective area of ~10 m 2 @ 8 keV, and a spectral resolution of ~240 eV in the energy band 2-30 keV. These performances are achieved covering a large collecting area with more than 2000 large-area Silicon Drift Detectors (SDDs) each one coupled to a collimator based on lead-glass micro-channel plates. In order to reduce the thermal load onto …

Bibelspråk og nasjonalspråk

2007

Dark consequences of social media-induced fear of missing out (FoMO): Social media stalking, comparisons, and fatigue

2021

Research on the dark side of social media usage has explored the fear of missing out (FoMO), social media fatigue (fatigue), social media stalking (stalking), and online social comparison (social comparison) independently. Accordingly, the complex interrelationships among these phenomena have remained understudied, creating a chasm that hinders a clearer understanding of their drivers and the potential counterstrategies to mitigate the collateral damage they may cause. We attempt to bridge this gap by drawing upon the theory of social comparison and the theory of compensatory internet use to formulate a framework that hypothesizes the mechanism of interaction among these negative fallouts. …

Do social enterprises walk the talk? Assessing microfinance performances with mission statements

2019

We study mission drift in social enterprises by examining whether these organizations stick to the actual mission enshrined in their mission statements. We use data from microfinance organizations (MFOs), a homogeneous group of social enterprises which have been scrutinized—and sometimes criticized—for mission drift. We focus on three publicly recognized and non-mutually-exclusive microfinance social missions identified by previous studies: poverty alleviation, women's empowerment, and rural financial inclusion. Based on hand-collected data from 199 MFOs worldwide, our results suggest strong coherence between social missions and actual practices. Hence, we argue that, with respect to MFOs' …

Brief an Garlieb H. Merkel

1798

Ms. 930a, Nr. 13, Bl. 35r-[36v] August Hennings. Brief an Garlieb H. Merkel, Ploen, den 20. Dece[mber] 1798 Autora rokraksts / Autograph, vācu val. / Deutsch [3] lpp. / S. Attēlu numuri / Bildnummern: 930a-013-1, 930a-013-2, 930a-013-3 Hennings, der dänische Amtmann in Plön und Bekannte des dänischen Ministers Schimmelmann, schreibt in seiner Funktion als Herausgeber der Zeitschrift „Genius der Zeit“ an Merkel. Er kündigt an, einen Aufsatz zu drucken, in dem Merkel Partei für seinen Schriftstellerkollegen Johann(es) Falk ergreift, worum ihn dieser in einem anderen Brief gebeten hat (vgl. Ms. 930a-012). Merkels Aufsatz soll in der Februarausgabe 1799 erscheinen. Der Aufsatz sowie der hier üb…

Hot-electron noise suppression in n-Si via the Hall effect

2008

We investigate how hot-electron fluctuations in n-type Si are affected by the presence of an intense (static) magnetic field in a Hall geometry. By using the Monte Carlo method, we find that the known Hall-effect-induced redistribution of electrons among valleys can suppress electron fluctuations with a simultaneous enhancement of the drift velocity. We investigate how hot-electron fluctuations in n-type Si are affected by the presence of an intense (static) magnetic field in a Hall geometry. By using the Monte Carlo method, we find that the known Hall-effect-induced redistribution of electrons among valleys can suppress electron fluctuations with a simultaneous enhancement of the drift vel…

Nonequilibrium electron spin relaxation in n-type doped GaAs sample

2019

Non-equilibrium electron spin relaxation in a n-type doped GaAs bulk semiconductor is investigated. We use a semiclassical Monte Carlo approach by considering multivalley spin dynamics of drifting electrons. Spin relaxation is considered through the D'yakonov-Perel mechanism, which is the dominant process in III-V semiconductors. An analytical expression for the inhomogeneous broadening of spin precession vector is derived by taking into account the effect of the electric field and the doping density. The inclusion of electron-electron scattering has the effect of increasing both the spin lifetime and the depolarization length. In particular, we find a non-monotonic trend with the maximum o…