Search results for "Modell"
showing 10 items of 2134 documents
SCOPE-Based Emulators for Fast Generation of Synthetic Canopy Reflectance and Sun-Induced Fluorescence Spectra
2017
Progress in advanced radiative transfer models (RTMs) led to an improved understanding of reflectance (R) and sun-induced chlorophyll fluorescence (SIF) emission throughout the leaf and canopy. Among advanced canopy RTMs that have been recently modified to deliver SIF spectral outputs are the energy balance model SCOPE and the 3D models DART and FLIGHT. The downside of these RTMs is that they are computationally expensive, which makes them impractical in routine processing, such as scene generation and retrieval applications. To bypass their computational burden, a computationally effective technique has been proposed by only using a limited number of model runs, called emulation. The idea …
Modelli statistici per la rilevazione e l’analisi della spesa turistica
2010
Resting electrocardiogram and blood pressure in young athletes and nonathletes : A 4-year follow-up
2022
A follow-up data on electrocardiogram (ECG) and blood pressure (BP) changes in adolescent athletes are scarce. We compared ECG and BP between adolescent athletes and non-athletes in a 4-year follow-up. A total of 154 youth sports clubs (SC) in Finland and 100 secondary schools for comparison data participated in this observational follow-up study. Those who maintained or adopted SC participation are referred to as “Always athletes” (n=137), those who never participated in SC as “Never athletes” (n=108) and those who dropped out of SC during the follow-up as “Changers” (n=116). The mean age of the participants was 15.5 (0.6) years in all study groups at baseline. Resting ECG including heart …
Il dynamic business model: una prospettiva dinamica per la progettazione dei modelli di business
2017
Building on the extant literature on business modelling and focussing on start-up firms, this article aims at exploring the combination between conventional business model schemes and System Dynamics methodology with the intent to overcome those limitations related to a static design approach. By mapping the multiple key elements underlying value creation processes – linked according to a cause-and-effect perspective – and with the support of a simulation-based methodology, entrepreneurs may experiment and understand how the firm reacts to strategic and organizational changes in terms of performance, innovation and value creation.
Misure di portata al colmo mediante analisi di livelli idrici in condizioni di moto vario
2008
Il contrasto al traffico di esseri umani fra modelli normativi e risultati applicativi
2016
La lotta al traffico di esseri umani è ormai al centro dell’agenda politica globale. Eppure, esiste una forbice molto ampia tra le ambizioni dei modelli normativi finora elaborati e gli scarsi risultati pratici raggiunti: le condanne per tali reati, infatti, continuano ad essere poche in pressoché tutti gli ordinamenti. L’Autore, preliminarmente, esamina la più recente normativa internazionale ed europea in argomento, nonché le più importanti pronunce della Corte Edu circa il divieto di schiavitù previsto dall’art. 4 della Cedu. Nel tentativo di apportare un contributo all’individuazione delle ragioni di un tale deficit di risultati, e di proporre potenziali correttivi, sono poi evidenziati…
Experimental analysis, numerical and analytical modeling of shear strength mechanisms in Hybrid Steel Trussed Concrete Beams
2014
Perfectionism and performance-related psychobiosocial states: The mediating role of competition appraisals.
2022
Using the multi-states (MuSt) theory as a framework, the present study focused on the individual (personality) antecedents of psychobiosocial states. Psychobiosocial states comprise emotional subjective experiences and their correlates (cognitive, motivational, volitional, bodily, motor-behavioural, operational, and communicative), that can be functional for performance (helpful) or dysfunctional (harmful). Specifically, we examined the relationships between two perfectionism dimensions (perfectionistic strivings and concerns) and functional and dysfunctional psychobiosocial states. The hypothesised mediational role of competitive appraisals was also tested. Participants (N = 271, 138 femal…
Automatic surrogate modelling technique selection based on features of optimization problems
2019
A typical scenario when solving industrial single or multiobjective optimization problems is that no explicit formulation of the problem is available. Instead, a dataset containing vectors of decision variables together with their objective function value(s) is given and a surrogate model (or metamodel) is build from the data and used for optimization and decision-making. This data-driven optimization process strongly depends on the ability of the surrogate model to predict the objective value of decision variables not present in the original dataset. Therefore, the choice of surrogate modelling technique is crucial. While many surrogate modelling techniques have been discussed in the liter…
UTILIZZO DEL SISTEMA GOOGLE EARTH PER LA DEFINIZIONE DI UN MODELLO DI SUSCETTIBILITÀ DA FRANA: UN TEST IN SICILIA CENTRALE
2011
Exploiting Google EarthTM to assess a landslide susceptibility model: a test in central Sicily. A landslide susceptibility multivariate model, based on the conditional analysis approach, has been derived in the Tumarrano river basin (about 78 km2), by intersecting a GIS grid layer, expressing some selected geo-environmental conditions (outcropping lithology, steepness, plan curvature and topographic wetness index), and a landslide vector archive, produced by a Google EarthTM aided remote survey. The analysis of the Google EarthTM images dated at 2006, allowed to recognize 733 landslides (30 rotational slides and 703 flows), almost exclusively affecting clay and sandy clay rocks. Validation …