Search results for "Modell"
showing 10 items of 2134 documents
From Dupin cyclides to scaled cyclides
2003
Dupin cyclides are algebraic surfaces introduced for the first time in 1822 by the French mathematician Pierre-Charles Dupin. They have a low algebraic degree and have been proposed as a solution to a variety of geometric modeling problems. The circular curvature line’s property facilitates the construction of the cyclide (or the portion of a cyclide) that blends two circular quadric primitives. In this context of blending, the only drawback of cyclides is that they are not suitable for the blending of elliptic quadric primitives. This problem requires the use of non circular curvature blending surfaces. In this paper, we present another formulation of cyclides: Scaled cyclides. A scaled cy…
Proposte metodologiche per la valutazione del potenziale di geoscambio: il Progetto VIGOR
2012
In the framework of VIGOR Project, a national project coordinated by the Institute of Geosciences and Earth Resources (CNR-IGG) and sponsored by the Ministry of Economic Development (MiSE), dedicated to the evaluation of geothermal potential in the regions of the Convergence Objective in Italy (Puglia, Calabria, Campania and Sicily), is expected to evaluate the ability of the territory to heat exchange with the ground for air conditioning of buildings. To identify the conditions for the development of low enthalpy geothermal systems collected and organized on a regional scale geological and stratigraphic data useful for the preparation of a specific thematic mapping, able to represent in a …
Estimer des flux de navetteurs avec un modèle gravitaire
2019
Dans ce poster, nous présentons le modèle gravitaire sous différents modèles en mettant en évidence les effets de distance et les occasions interposées. Le modèle généralisé de Newton est utilisé et donne des estimations relativement correctes des flux intercommunaux en région PACA.
HARMONIC PROFILE IN MOLECULAR ION IN THE PRESENCE OF A LASER RADIATION FIELD
2009
CFD simulation of heavy pollutants in urban areas: the case study of Messina.
2008
INVESTIGATION, REALIZATION, AND ENTANGLEMENT CHARACTERIZATION OF COMPLEX OPTICAL QUANTUM STATES
2020
Mathematical modelling of sustainable bioresidual concrete
2019
In the production of cement, which is the main component of concrete production, the process generates about 5% of the global carbon dioxide emissions. In addition, bioproduct and pulp mills produce signi_cant quantities of soda ash and bio-ash, which is still largely unused. In this paper we will introduce our study related to improving the environmental friendliness of concrete used in construction by utilizing pulp mill waste while its long-term durability and strength and porosity properties meet the goals set for construction. The project `sustainable bioresidual concrete' is on-going and only preliminary numerical results with measurements are presented here. peerReviewed
Modeling the hydrological and mechanical effect of roots in shallow landslide analysis
2015
The additional cohesion exercised by vegetation roots (cr) provides an important contribution to the slope stability. This study proposes a methodology for estimating the cr term in a hillslope landslide analysis within a coupled ecohydrological-stability model. The coupled model simulates the spatial distribution and temporal dynamics of the Factor of Safety (FS) as a function of soil moisture dynamics, by taking into account the hydrological effects of vegetation through the root water uptaking. The additional mechanical root cohesion is estimated in a Fiber Bundle Model framework that allows for the evaluation of the root strength as a function of stress-strain relationships of populatio…
Hydrological and mechanical effects of roots in shallow landslide analysis: A physically-based approach
2015
This study provides the first insights of a methodology for estimating the additional cohesion exercised by vegetation roots in a hillslope landslide analysis within a coupled ecohydrological-stability model. The existing coupled system is able to simulate the spatial distribution and temporal dynamics of Factor of Safety (FS) as a function of soil moisture dynamics. The model takes into account the hydrological effects of vegetation which, through the root water uptaking, contributes in reducing the soil water content and, thus, in increasing the slope stability. The additional mechanical root cohesion is estimated in a Fiber Bundle Model (FBM) framework that allows for the evaluation of t…
Historical model of settling and spread of Bell Beakers Culture in the mediterranean France
2004
Die Glockenbecherkultur im mediterranen Südfrankreich : ein historisches InterpretationsmodellIm Folgenden werden einige Teilergebnisse aus einer Dissertation vorgestellt, die im März 2002 an der Universität Aix-en-Provence vorgelegt wurde (Lemercier 2002). In dieser Arbeit wurden sämtliche Glockenbecher-Elemente (1200 verzierte Gefässe bzw. Gefässfragmente) aus über 300 südostfranzösischen Fundstellen mit annähernd berücksichtigt. Diese Untersuchung bestätigt das Vorhandensein von vier Stilgruppen und die Gültigkeit der von J. Guilaine auf der Basis der verzierten Keramik vorgeschlagenen Chronologie weitgehend. Die Analyse dieser Gruppen, ihrer Fundumstände und ihrer Verbreitung führt uns …