inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (3334 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The need for a lexicon of scale terms in integrating remote sensing data with Geographic Information Systems
  • Geographical information system ; Multidimensional scaling ; Remote sensing ; Scale ; Space time ; Terminology
  • The A. elaborates some terminologies of accepted scaling terms that include : characteristic scale, scale dependance, multiple scale, image spatial resolution, effective resolution element, absolute scale and relative scale. - (DWG)
  • Hierarchies and spatial scale in process geomorphology : a review
  • Earth surface processes ; Geomorphology ; Geosystem ; Model ; Scale ; Spatial scale
  • Echelle ; Echelle spatiale ; Géomorphodynamique ; Géomorphologie ; Géosystème ; Modèle
  • The objective of this study is to review field evidence from the geomorphological literature relevant to the spatial scale problem, and to generalize the findings by developing a series of propositions. This paper presents these propositions
  • , synthesized into a coherent framework to form the philosophical foundation for dealing with the spatial scale problem in process geomorphology.
  • The aggregate spatial patterns of maritime transport at world scale : a macro-scale approach in transport geography in Geography of transport.
  • A typology of spatial and temporal scale relations
  • Scale ; Space time ; Spatial representation ; Typology
  • Une typologie appliquée à des échelles spatiale, temporelle et spatio-temporelle décrit les relations entre les échelles prises deux à deux, quel que soit l'espace et quel que soit le temps.
  • The role of spatial scale in geomorphic systems
  • Analyse multivariée ; Analyse spatiale ; Echelle ; Espace-temps ; Géographie physique ; Géomorphologie ; Hydrologie mathématique ; Semi-variogramme ; Statistique spatiale ; Système ; Variation spatiale
  • Utilisation des méthodes de statistique spatiale pour déterminer les différences significatives au niveau des échelles spatiales.
  • The scale in the mathematical modelling of geoecosystems
  • Concept ; Ecosystem ; Geo-ecology ; Geosystem ; Mathematical model ; Methodology ; Model ; Spatial scale
  • Concept ; Echelle spatiale ; Ecosystème ; Géo-écologie ; Géo-écosystème ; Géosystème ; Modèle ; Modèle mathématique ; Méthodologie
  • , in the context of all the geochemical, geomorphological and hydrological processes ongoing on different scales, as dependent on the tempero-spatial conceptualisation taking account of the size and heterogeneity of features thereof. Spatial scale is defined after
  • The article presents methodological concepts and definitions as regards different scales, as well as their magnitudes in relation to the study and modelling of geoecosystems. The particular subject being considered is the geoecosystem
  • The limits to scale ? Methodological reflections on scalar structuration
  • Configuration spatiale ; Echelle ; Méthodologie ; Production de l'espace ; Recherche ; Théorie sociale
  • The outpouring of research on scale production and on rescaling processes has been accompanied by a blunting of the concept of geographical scale as it has been blended into concepts such as place, locality, territory and space. The paper explores
  • Cognition and shopping choice: a multidimensional scaling approach
  • Centre commercial ; Choix ; Comportement spatial ; Espace perçu ; Géographie humaine ; Multidimensional scaling ; Méthodologie ; Perception
  • Présentation d'un programme de multidimensional scaling, PREFMAP, apte à faire des comparaisons entre les perceptions individuelles. Application à la perception des caractéristiques des centres commerciaux.
  • A study on the effect of spatial scale on the parameters of a sediment transport equation for sheetwash
  • Cluster analysis ; Experiment plot ; Precipitation ; Rill wash ; Sediment transport ; Slope ; Soil erosion ; Spatial scale ; Watershed
  • Analyse des groupes ; Bassin-versant ; Echelle spatiale ; Erosion des sols ; Parcelle expérimentale ; Précipitation ; Ruissellement ; Transport sédimentaire ; Versant
  • This paper presents a synthesis of results obtained during 3 experiments conducted using the same methodology for comparable contexts at various spatial scales but for short events. The unique methodology, the experimental control on factors
  • affecting erosion and the range of scales over 2 orders of magnitude permit to investigate the sensivity of the parameters of a sediment transport equation to spatial scale transfer. The results will show the possibility of using a relation calibrated
  • for a small scale experimental plot on a larger scale agricultural field under specific conditions.
  • Spatial heterogeneity and domain of scale on the Skallingen salt marsh, Denmark
  • Biodiversity ; Biogeography ; Coastal environment ; Denmark ; Ecosystem ; Jylland ; Plant species ; Salt marsh ; Scale ; Spatial variation
  • Biodiversité ; Biogéographie ; Danemark ; Echelle ; Ecosystème ; Espèce végétale ; Jylland ; Littoral ; Marais salant ; Variation spatiale
  • -area relationship, a measure of species diversity as a function of scale and 2) quantifying spatial point pattern and spatial texture in the distribution of plant across small spatial scales. This study makes a quantitative contribution to the body
  • The study area is the Skallingen salt marsh in Jutland. The AA. specifically aim to identify the domain of scale over which vegetation pattern and process are detected on a salt marsh. Such identification will be achieved by 1) examining the species
  • of emerging novel theory that emphasizes scale-dependent complexity in salt marsh ecosystems.
  • Scale-economy conditions for spatial variation in farm size
  • Agricultural land use ; Economies of scale ; Farm ; Farm size ; Model ; Spatial structure
  • Economies d'échelle ; Exploitation agricole ; Modèle ; Structure spatiale ; Taille de l'exploitation ; Utilisation agricole du sol
  • L'A. étudie les économies d'échelle en agriculture compte tenu des récoltes associées à un niveau donné d'intensité. Modélisation de la structure spatiale de l'agriculture, en incluant la taille de l'exploitation.
  • Geomorphic controls of spatial pattern and process at alpine treeline
  • Biogéographie ; Distribution spatiale ; Etats-Unis ; Géomorphologie ; Impact ; Limite supérieure de la forêt ; Modèle conceptuel ; Montagne ; Montana
  • Biogeography ; Conceptual model ; Geomorphology ; Impact ; Montana ; Mountain ; Spatial distribution ; Tree line ; United States of America
  • The aim of this study is to propose a conceptual model that describes the multi-spatial-scale relationship between treeline advance and geomorphology. The approach examines the spatial patterns of tree occurrence in Glacier National Park, Montana
  • , at 3 spatial scales to establish the relative roles of macro- (landscape scale), meso- (aspect and elevation), and microscale (level of individual tree growth, establishment, and death) controls on tree establishment at the highest locations of alpine
  • treeline. Geomorphic features are therefore important in linking scales of pattern and process at the alpine treeline ecotone.
  • Variability of the morphometric characteristics of valley networks caused by variations in a scale
  • Drainage network ; Fractals ; Geomorphometry ; Spatial scale ; Valley
  • Echelle spatiale ; Fractale ; Géomorphométrie ; Réseau de drainage ; Vallée
  • This article indicates the quantitative tools, with assistance of which it is possible to characterize the morphology (shape) of the valley network and determine their variability caused by the scale change. The monitored morphometric
  • characteristics (quantitative tools) have been applied to the paradigmatic examples of the schematic valley networks and have been analyzed in three scales. In order to analyze the valley networks, the most suitable are “valley junction angles” and “homogeneity
  • of various order valleys”, where the relevant values dropped while increasing the scale, but the normal (Gauss) distribution of values was preserved. - (EN)
  • The spatial reorganization of office functions by rationalization : a case study of the large-scale retailer U N Y
  • Economic restructuring ; Japan ; Offices ; Retail trade ; Spatial organization
  • This study aims to clarify how one Japanese corporation (large scale retailer U N Y ) rationalized and changed the spatial organization of its office functions during this recession. - (KA)
  • The use of multivariate statistics to elucidate patterns of floodplain sedimentation at different spatial scales
  • This paper uses qualitative and quantitative data analyses to examine multi-scale spatial patterns of sedimentation in a large anastomosing river floodplain in SW Queensland. Patterns of sedimentation at the channel, floodplain process zone
  • and geomorphic unit scales are elucidated from qualitative, but traditional, sediment core stratigraphy, and compared against multi-scaled patterns obtained from quantitative multivariate analyses.
  • Simulation of leaf area index and biomass at landscape scale
  • Biomass ; China ; Jilin ; LANDSAT ; Landscape ; Mountain ; Phenology ; Plant canopy ; Remote sensing ; Scale ; Simulation ; Spatial distribution ; Thematic Mapper ; Vegetation index
  • Biomasse ; Chine ; Couvert végétal ; Distribution spatiale ; Echelle ; Indice de végétation ; Jilin ; LANDSAT ; Montagne ; Paysage ; Phénologie ; Simulation ; Thematic Mapper ; Télédétection
  • The method for simulating the temporal and spatial distribution patterns of leaf area index (LAI) and biomass at landscape scale using remote sensing images and surface data is discussed in this paper. The method is based on Landsat Thematic Mapper
  • (TM) images (May 23, 1985; September 2, 1999) and LAI and biomass measurements at patch scale. The study area is Changbai Mountain Nature Reserve in southeastern Jilin province.
  • A geographical solution to scale and aggregation problems in region-building, partitioning and spatial modelling
  • Analyse spatiale ; Données agrégées ; Echelle ; Généralités sur la géographie ; Modèle spatial ; Optimisation ; Régionalisation ; Zonage automatique
  • Scale dependence of gully investigations
  • Comparative study ; Gully erosion ; Land use ; Lithology ; Scale ; Soil erosion ; Soil properties ; Spatial scale ; Water erosion ; Watershed
  • Bassin-versant ; Echelle ; Echelle spatiale ; Erosion des sols ; Erosion hydrique ; Etude comparée ; Lithologie ; Propriétés du sol ; Ravinement ; Utilisation du sol
  • Gully erosion plays a particular role in rapid and extreme erosion processes. Research at regional, catchment and gully scale may have different objectives. The main aim of the paper is to compare methods from the local to regional scale. Three case
  • studies are presented. The results suggest the following statements to be made. At local scale the processes are determined by gully morphology, material and energy transport as well as by soil properties. The topographical and lithological factors
  • parallel with land use have growing importance with the decreasing scale. - (AM)
  • Process-response models of denudation at different spatial scales in Geomorphological models. Theoretical and empirical aspects.
  • In this paper, one theoretical model program SLOP 3 D, which is based on the mass balance concept, is applied to geomorphological problems at very different spatial and temporal scales.
  • Concept ; Geomorphology ; Instrumentation ; Periglacial features ; Research technique ; Scale ; Theory
  • The variety of periglacial environments, the variable nature of the spatial and temporal signals within periglacial environments, and the scale limitations inherent to instrumental investigations, all combine to focus attention on small-scale
  • geomorphological investigations. Integration of such findings, that is scale linkage, is a difficult, but essential task that requires development of rigorous theory.