Search results for " LAG"
showing 10 items of 280 documents
L'approvvigionamento idrico per l'agricoltura
2008
La monografia contiene la descrizione delle fonti di approvvigionamento idrico da acque superficiali e sotterranee, con particolare riferimento alla impostazione del dimensionmento idraulico ed alle problematiche tecniche riguardanti i laghetti collinari costruiti in alveo e fuori alveo.
Sobre cerámicas Helenísticas en Iberia / Hispania. Significado y funcionalidad
2012
In this work we are going to take a chronological and typological tour by studying the iconography that appears in the Hellenistic wares imported from the Central and Oriental Mediterranean between 3rd and 2nd centuries BC in Hispania Citerior, in particular from Cartagena. We are going to analyze its functionality in the places of origin, and with the help of the Hispanic contexts we will conclude whether its presence here is a consequence of a certain commercial dynamic, or if it answers to a decorative preference, of taste or trend; even if the images are significant related to ritual or convivial uses, public or private, by the local inhabitant who acquires and uses them.
Estimation of the time lag occurring between vegetation indices and aridity indices in a Sicilian semi-arid catchment
2009
The evolution of drought phenomena in a Sicilian semi-arid catchment has been analyzed processing both remote sensing images and climatic data for the period 1985-2000. The remote sensing dataset includes Landsat TM and ETM+ multispectral images, while the climatic dataset includes monthly rainfall and air temperature. The results have been specifically discussed for areas where it is possible to neglect agricultural activities and vegetation growth is only influenced by natural forcing. The main outcome of this study is the quantification of the time lag between the remote sensing retrieved vegetation indices and the aridity indices (AIs) calculated from climatic data. Moreover the obtaine…
Fracture stratigraphy and oil first migration in Triassic shales, Favignana Island, western Sicily, Italy
2021
This study aims at evaluating the control exerted by fracture stratigraphy and diagenetic processes on oil first migration through an outcropping, mixed carbonate-siliciclastic succession. The present work included results of sedimentological, paleontological, mineralogical, petrographic, structural, and microstructural analyses carried out on organic-rich shales exposed at the Favignana Island of Sicily, Italy. The analyses focus on Upper Triassic yellowish siltstones and greyish laminated dolomitic limestones, which form a 10's of m-thick succession exposed along the westernmost portion of the Sicilian fold-and-thrust belt. The studied succession deposited in a coastal lagoon associated t…
GEOCHEMICAL AND MINERALOGICAL FINGERPRINTS OF THE SEDIMENTS SUPPLY AND EARLY DIAGENETIC PROCESSES IN THE BIZERTE LAGOON (TUNISIA)
2016
International audience; The Bizerte Lagoon (Tunisia) functions as a sedimentation environment characterized by receiving allochthonous sediments mainly transported by the Ben Hassine, Rharek and Guenich streams, as well as marine sediments from the Mediterranean Sea. It is subjected to significantenvironmental changes due to the natural and anthropic influences altering the natural patterns of circulation, extraction and/or deposition of mineralogical materials. The aim of this investigation is to analyze the sediments supply and early diagenetic processes in Bizerte Lagoon. Thephyicochemical parameter of the sediment pore water, as well as their texture, mineralogical composition (X-Ray di…
Sobre las poblaciones de" Helianthemum asperum Lag." (Cistaceae) de la Sierra de Espadán, Castellón
1996
Se describe un nuevo taxon, Helianthemum asperum subsp. willkommii G. Mateo, M.B. Crespo & Aguilella, de las sierras litorales del sur de Castellón y norte de Valencia; sobre el que se aportan datos ecológicos, bioclimáticos, históricos, etc. complementarios.
On the Use of the Eddy Covariance Latent Heat Flux and Sap Flow Transpiration for the Validation of a Surface Energy Balance Model
2018
Actual evapotranspiration is assessed via surface energy balance at an hourly rate. However, a robust estimation of daily evapotranspiration from hourly values is required. Outcomes of surface energy balance are frequently determined via measures of eddy covariance latent heat flux. Surface energy balance can be applied on images acquired at different times and spatial resolutions. In addition, hourly actual evapotranspiration needs to be integrated at a daily rate for operational uses. Questions arise whether the validation of surface energy balance models can benefit from complementary in situ measures of latent heat flux and sap flow transpiration. Here, validation was driven by image ac…
Cross-lagged relations between task motivation and performance in arithmetic and literacy in kindergarten
2009
Abstract To examine the cross-lagged relationships between children's task motivation in mathematics and literacy, and their related performance, 139 children aged 5–6 years were examined twice during their kindergarten year. The results showed that only math-related task motivation and arithmetic performance showed cross-lagged relationship: the higher the math-related task motivation children reported in the beginning of the kindergarten year the higher the level of their arithmetic performance at the end of the kindergarten year. Moreover, the higher the level of children's arithmetic performance the more the interest in mathematics children reported later on. Literacy-related task motiv…
Anomalous non-leptonic kaon decays
1992
8 páginas, 1 figura.
Positivity, complex FIOs, and Toeplitz operators
2018
International audience; We establish a characterization of complex linear canonical transformations that are positive with respect to a pair of strictly plurisubharmonic quadratic weights. As an application, we show that the boundedness of a class of Toeplitz operators on the Bargmann space is implied by the boundedness of their Weyl symbols.