Impact de l'organisation des structures paysagères sur les dynamiques de ruissellement de surface en domaine bocager. Etude comparée de 3 petits bassins versants bas-normands
bassins versants bas-normands de taille voisine (Tortillon, Petite Seuline, Lingèvres) développe une approche plus dynamique du système érosif permettant d'identifier les surfaces potentiellement contributives à la charge solide d'un bassin versant bocager
Global sensitivity analysis of a large agent-based model of spatial opinion exchange : a heterogeneous multi-GPU acceleration approach
The objective focuses on the sensitivity analysis of large agent-based modeling of spatial opinion exchange, accelerated using multiple graphics processing units (GPUs). It is conducted using a variance-based approach, requiring numerous model runs
for Monte Carlo integration. Experimental results indicate GPU-accelerated general-purpose computation provides an efficacious and feasible solution for the sensitivity analysis of large agent-based models. The heterogeneous parallel computing approach
Administration ; Base de données ; Collectivité locale ; Communication ; Développement local ; France ; Internet ; Technologie ; Territoire numérique ; Typologie
Administration ; Communication ; Data base ; Digital territory ; France ; Internet ; Local development ; Local government unit ; Technology ; Typology
Administración ; Base de datos ; Colectividad local ; Comunicación ; Desarrollo local ; Francia ; Internet ; Tecnología ; Tipología
Après une revue de la littérature, on exploite une base de données originale pour mettre en évidence des différences importantes dans les stratégies de déploiement de ces services. On constitue un échantillon de communes homogène et on souligne
Base militaire ; Environnement ; Etats-Unis ; Fermeture de site militaire ; New Hampshire ; Reconversion ; Restauration écologique ; Réserve naturelle ; Vie sauvage
Ecological restoration ; Environment ; Military base ; Military site closure ; Nature reserve ; New Hampshire ; Restructuring process ; United States of America ; Wildlife
Base militar ; Estados Unidos ; Medio ambiente ; Reconversión ; Reserva natural ; Restauración ecológica ; Vida salvaje
Recent military base closures and realignments in the United States have opened dozens of former training and testing sites to new uses and priorities, as national wildlife refuges. This paper acknowledges some of the real conservation opportunities
Amazonie ; Bassin-versant ; Brésil ; Capture fluviale ; Escarpement de faille ; Modèle numérique ; Niveau de base ; Pléistocène ; Rupture de pente ; Réseau de drainage ; Tectonique ; Temps de réponse
Amazon Basin ; Base level ; Brazil ; Drainage network ; Fault scarp ; Fluvial capture ; Knickpoint ; Numerical model ; Pleistocene ; Response time ; Tectonics ; Watershed
Amazonia ; Brasil ; Captura fluvial ; Cuenca hidrográfica ; Escarpadura de falla ; Modelo numérico ; Nivel de base ; Pleistoceno ; Red de drenaje ; Tectónica ; Tiempo de respuesta
knickpoints was generated by base-level fall following drainage capture; through numerical modeling of their initiation and propagation, the capture event is inferred to have occurred between the middle and late Pleistocene, consistent with other studies
of landscape change in surrounding areas. In low-slope settings like the Amazon River basin, base-level fall can increase erosion rates by more than an order of magnitude, and moderate to large river basins can respond to episodes of base-level fall over
Agent-based simulation ; Distance ; Model ; Modelling ; Simulation ; Space ; Topology ; Urban segregation
En ce qui concerne la simulation à base d'agents, les plates-formes sont souvent trop complexes pour être utilisées par des non-informaticiens ou trop limitées pour développer des modèles riches intégrant de nombreux agents et données. La plate
simultanément plusieurs environnements basés sur trois types de topologie, d’intégrer des données géographiques et de représenter des géométries dans un environnement 3D. Illustration par un modèle sur les problématiques de ségrégation urbaine.
Estimation of autoregressive models with two types of weak spatial dependence by means of the W-based and the latent variables approach : evidence from Monte Carlo simulations
This article examines the estimation of autoregressive models with two types of weak spatial dependence by means of the W-based and the latent variables approach through evidence from Monte Carlo simulations. It starts by comparing the two
-based models, SEM frequently has smaller bias and RMSE. Furthermore, SEM even outperforms the correctly specified W-based models (based on the same two weights matrices used for data generation) in many cases.
Ajustement fluvial ; Arizona ; Bassin-versant ; Carbonate ; Désert ; Etats-Unis ; Géomorphogenèse ; Niveau de base ; Pédiment ; Sonora ; Terrasse fluviatile
Arizona ; Base level ; Carbonate ; Desert ; Fluvial adjustment ; Fluvial terrace ; Geomorphogenesis ; Pediment ; Sonora ; United States of America ; Watershed
Arizona ; Carbonato ; Cuenca hidrográfica ; Desierto ; Estados Unidos ; Geomorfogénesis ; Nivel de base ; Pedimento ; Terraza fluvial
into the response of granitic pediments to drainage basin evolution and episodic base-level adjustment in the Sonoran Desert, where pediments are ubiquitous. The AA. focus here on the lower Salt and Verde rivers, south-central Arizona. Using fieldwork, supplemented
Knowledge sourcing, knowledge bases, and the spatial organisation of car design
Allemagne ; Base de connaissances ; Bayern ; Brésil ; Chine ; Curitiba ; Design ; Industrie ; Industrie automobile ; Ingolstadt ; Innovation ; München ; Organisation spatiale ; Paraná ; Shanghai ; São Paulo ; Transfert de connaissances ; Voiture
This article examines knowledge sourcing, knowledge bases, and the spatial organisation of car design. Through the examples of Audi (Ingolstadt and Munich, Bavaria ; Renault( Curitiba and São Paulo, Brazil) and SAIC-GM (Shanghai´s larger region
(China). Evidence suggests that when the synthetic knowledge base is dominant, formal collaboration and mobility are prime knowledge sourcing mechanisms. Moreover, knowledge creation and exchange is likely to occur between actors permanently located
Location-demand-based residential floor area ratio distribution method
This paper develops a quantitative residential floor area ratio (FAR) distribution alternative based on both the advantages of the location and the market demand for the locations in Taipei, Taiwan. The methods applied involve the measurement
Assessing the localization pattern of German manufacturing and service industries : a distance-based approach
This paper assesses the localization pattern of German manufacturing and service industries through the distance-based approach. It is found that the location pattern of 71% of the manufacturing industries departs from randomness in the sense
This paper develops a typology of these geographies based on three dimensions that characterize the conditions for knowledge exchange: (i) framing, (ii) cognitive focus and goals, and (iii) trust and risks involved. Based on these variables
. Systematic comparison reveals that with growing uncertainty in economic interaction and with increasing commitment between the agents, trust-based linkages tend to become more important, and the number of interacting agents declines, while the frequency
A novel ensemble bivariate statistical evidential belief function with knowledge-based analytical hierarchy process and multivariate statistical logistic regression for landslide susceptibility mapping
This study compares the landslide susceptibility maps from 4 application models : 1) the bivariate model of the Dempster–Shafer based evidential belief function (EBF); 2) integration of the EBF in the knowledge-based analytical hierarchy process
(AHP) as a pairwise comparison model processed by using all available causative factors; 3) integration of the EBF in the knowledge-based AHP as a pairwise comparison model by using high nominated causative factor weights only; and 4) integrated EBF
performance than LR. These resultant maps can be used to extend the capability of bivariate statistical based model, by finding the relationship between each single conditioning factor and landslide locations, moreover, the proposed ensemble model can be used
3D model-based estimations of volume and mass of high-energy dislocated boulders in coastal areas of Greece by terrestrial laser scanning
in combination with DGPS is capable to derive reliable parameters for wave transport equations. The combination of 3D model-based volume estimations and density measurements provide a better accuracy than achieved by conventional approximations, which are still
the common method in scientific studies on boulder dislocation. The AA. found that volume data based on axes measurements together with density approximations result in a considerable overestimation of the mass of dislocated boulders.
Based on available data sources and a retrospective research, the AA. review the approaches and methods of the digital reconstruction and analyze their advantages and possible constraints. First, the reconstruction methods based on historical
documents, maps and pictures, and on natural archives geoarchives are analysed. Then, model-based reconstruction and reconstruction based on multiple-source data and multidisciplinary analysis are compared. There are challenges that make these methods still
Delimitation and typology of functional urban regions in Poland based on commuting, 2006
Présentation de la délimitation des régions urbaines fonctionnelles en Pologne, modifiée à l’aide de la méthode de Nyusten-Dacey basée sur les données de la migration alternante de 2006. La modification a impliqué la mise en place d'une hiérarchie
administrative et règlementaire pour servir de base à la détermination de l'ordre de priorité des flux migratoires vers les communes, en le complétant avec la combinaison des entrées et des sorties dans une region-pivot donnée. Un total de 456 régions
Agent-based modeling in Coupled Human and Natural Systems (CHANS): lessons from a comparative analysis
This article examines a Coupled human and natural systems -oriented protocol based on the overview, design concepts, and details (ODD) framework to help CHANS modelers and other researchers build, document, and compare CHANS-oriented ABMs Agent
-based models). Using this approach, it shows how complex demographic decisions, environmental processes, and human–environment interaction in CHANS can be represented and simulated in a relatively straightforward, standard way with ABMs by focusing