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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • A statistical method for the detection of geographic clustering
  • Methodology ; Probability ; Spatial analysis ; Spatial autocorrelation ; Statistics ; Test
  • local statistics. Local statistics for data on a regular grid of cells are first defined by using a Gaussian kernel. Results from integral geometry are used to find the probability that the maximum local statistic exceeds a given critical value.
  • 2001
  • Multiscale statistical models for hierarchical spatial aggregation
  • Data analysis ; Model ; Scale ; Space time ; Spatial aggregation ; Spatial analysis ; Statistics
  • The AA. introduce a new, general framework for multiscale statistical modeling and inference that is explicitly designed for a broad class of geographic data. The key structural assumption underlying these models is that of a set of hierarchically
  • 2001
  • An approximation for the rank adjacency statistic for spatial clustering with sparse data
  • Methodology ; Mortality ; Simulation ; Spatial analysis ; Spatial distribution ; Statistics
  • The rank adjacency statistic D provides a simple method to assess regional clustering. The usual normal approximation is found to give inaccurate results if the data are sparse and some regions have tied ranks. Ajusted formulae for the moments of D
  • 2001
  • GRADISTAT : a grain size distribution and statistics package for the analysis of unconsolidated sediments
  • Computing ; Grain size distribution ; Methodology ; Sedimentology ; Statistics
  • Grain size analysis is an essential tool for classifying sedimentary environments. A computer program called GRADISTAT has been written for the rapid analysis of grain size statistics from any of the standard measuring techniques, such as sieving
  • 2001
  • Correlation ; Distance ; Distribution of points ; Population ; Spatial aggregation ; Spatial analysis ; Spatial distribution ; Statistics ; United States of America
  • The paper presents an approach for spatial correlation analysis for count variables by comparing their cumulative spatial distributions. Using the concept of LSCDF in classical statistics, it shows that location-specific and its associated K-S-like
  • statistic, which indicate the magnitude of difference between the two spatial distributions, are highly consistent over different levels of spatial scale. The two LSCDFs can provide a geographic description of the two spatial distributions of population
  • 2001
  • Assessment of shallow landslide susceptibility by means of multivariate statistical techniques
  • Discriminant analysis ; Land use ; Landslide ; Multivariate analysis ; Pyrénées ; Slope ; Slope dynamics ; Slope gradient ; Spain ; Statistics
  • 2001
  • Modeling air quality in urban areas : a cell-based statistical approach
  • Air quality ; Atmospheric pollution ; Ozone ; Pollution ; Statistics ; Town ; United States of America ; Urban environment
  • Statistical regression models are presented that explain the observed variations, across USA urban areas, in the concentrations of two major pollutants, ozone and carbon monoxide. Model specification and estimation are based on an explicit and new
  • 2001
  • A statistical relationship between El Niño-Southern Oscillation and Florida wildfire occurrence
  • Analysis of variance ; Atmospheric dynamics ; Climate oscillation ; El Niño ; Fire ; Florida ; Global change ; Natural hazards ; Ocean atmosphere interaction ; Statistics ; Surface temperature ; Thermal anomaly ; Twentieth Century ; United States
  • ). This research shows that a statistically significant relationship exists between ENSO conditions and annual wildfire occurrence in Florida when ENSO conditions are treated as a potential precursor to wildfire conditions.
  • 2001
  • Czech Republic ; Peripheral region ; Region ; Statistical analysis
  • The possibilities of using statistical analysis for Czech peripheral regions are examinated. The types of traditional peripheral areas with a low settlement density and prevailing agricultural structure are evaluated. A definition of peripheral
  • 2001
  • Distance ; Distribution of points ; Methodology ; Network ; Spatial statistics ; Statistics
  • 2001
  • A statistical method for analyzing the relative location of points in a bounded region
  • Distribution of points ; Location ; Methodology ; Spatial analysis ; Spatial distribution ; Statistics
  • 2001
  • Cold area ; Iceland ; Lithology ; Microstructure ; Moraine ; Sedimentary ; Statistics
  • In this paper, the degree of statistical variance in fabric data for 2 types of subglacial till from Breidamerkurjøkull, Iceland. The experiments show that, for each till type, the observed between-sample variability in the fabrics lies within
  • 2001
  • Istanbul ; Land use ; Model ; Modelling ; Statistics ; Turkey ; Urban area
  • On the basis of satellite image analysis, the spreading of urban-industrial land use on Kocaeli peninsula between 1994 and 1998 could be described and predicted by means of an empirical, spatial-statistical model, using topological and topographical
  • 2001
  • Block of flats ; Enquiry ; Housing estate ; Hungary ; Residential mobility ; Social geography ; Statistical analysis ; Urban geography
  • This paper deals with the characteristics of residential mobility at different generations of large scale housing estates. The first part of the study is based on official statistics analysing the socio-demographic characters of the 4 selected
  • 2001
  • Atmospheric circulation ; Climatic variability ; Climatology ; Evaporation ; Interannual variability ; Poland ; Radiation ; Solar activity ; Statistics ; Twentieth Century ; Wind speed ; Wrocław
  • The AA. present the results of a statistical-climatological study of evaporation from the water surface in Wroclaw and its variability in the years 1946-1995. The evaporation was characterized by year-to-year variability in the annual, half-year
  • 2001
  • robust to the method of statistical analysis. Low income and unemployment are also significant predictors of exposure, although results vary depending on the method of analysis. This result emphasizes the value of GIS and spatial statistical techniques
  • 2001
  • Econometry ; Model ; Spatial autocorrelation ; Spatial economy ; Spatial interaction ; Spatial statistics ; Statistics
  • 2001
  • Dendrology ; Germany ; Hessen ; Mass movement ; Slope ; Slope dynamics ; Statistics
  • A detailed dendrogeomorphological landslide investigation has been carried out at the Tertiary escarpment in northwest Rheinhessen, Germany. For the first time, analysis of shrub growth curves using optical and statistical techniques has
  • 2001
  • Demographic change ; Employment ; Induced effect ; Regional development ; Regional economy ; Statistics ; United States of America
  • 2001
  • Algorithm ; Geographical information system ; Geography ; Model ; Simulation ; Spatial statistics
  • 2001