Solr Search · GéoProdig, portail d'information géographique

China ; Forecast ; Model ; Neural network ; Space time ; Spatial weighting ; Statistics ; Temperature ; Time series
The article presents a hybrid framework combining machine learning and statistical methods to address a modelisation of the nonlinearities and nonstationarities of environmental space-time series. A four-stage procedure is proposed and it is applied
2011

Mobility ; Pedestrians ; Space time ; Spatial analysis ; Spatial choice ; Statistics ; Urban area
The AA. propose an exploratory statistical approach to detect patterns of movement suspension using a local indicator of spatial association in a vector space representation. Two data sets are used to evaluate the approach in terms of exploring
2011

A GIS-based comparative study of frequency ratio, analytical hierarchy process, bivariate statistics and logistics regression methods for landslide susceptibility mapping in Trabzon, NE Turkey
Comparative study ; Geographical information system ; Inventory ; Landslide ; Methodology ; Natural hazards ; Statistical analysis ; Thematic mapping ; Turkey ; Vulnerability
The aim of this study was to evaluate the susceptibility of the occurrence of landslides in Trabzon province, situated in north east Turkey. This was achieved using the following 5 methods : the frequency ratio model, AHP, the statistical index (Wi
2011

Matrix analysis ; Regression analysis ; Simulation ; Spatial analysis ; Spatial autocorrelation ; Statistics
and also the inefficiency of this index in some situations. New statistics and procedures are proposed for testing spatial autocorrelation, and a simulation study is conducted. The real data set concerns the analysis of mosquito counts in the urban area
2011

La valeur des données géographiques

Error ; Model ; Regression analysis ; Spatial analysis ; Spatial dependence ; Spillover ; Statistics
2011

Arid area ; Erodibility ; Grain size distribution ; Land use ; Semi-arid area ; Soil erosion ; Soil properties ; Southern Tunisia ; Statistical distribution ; Tunisia ; Wind erosion
This paper analyses the statistical parameters of the grain size distributions of soils of South Tunisia where different landscapes coexist, with a graduation from semi-arid to arid and including both natural surfaces and agricultural or pastoral
areas. Two different methods were used : the logarithmic method of moments and the use of a combination of log-normal statistical functions. Both methods underline the ubiquitous and dominant presence of a very fine sand population, very well sorted
2011

Statistical analyses of active patterned ground occurrence in the Taillon Massif (Pyrénées, France/Spain)
Factor analysis ; France ; Mountain ; Multivariate analysis ; Patterned ground ; Periglacial features ; Pyrénées ; Sampling ; Spatial analysis ; Statistics
2011

Climate reconstruction ; Climatic warming ; Dendroclimatology ; Dendrology ; Northern hemisphere ; Palaeoclimatology ; Statistical analysis ; Statistics ; Temperature ; World
based records was taken into account. Statistical analyses showed that in the extratropical part of the Northern Hemisphere the time period 1988–2008 was the warmest two decades within the last 1000 years and had a probability of more than 0.70
2011

Carbonate rock ; Geochemistry ; Permeability ; Porosity ; Salt ; Simulation ; Spain ; Spatial variation ; Statistical analysis ; Weathering
in 2 limestones from Spain. The Fraga and Tudela limestones are from the Ebro basin and are of Miocene age. Permeability mapping and statistical analysis before and after salt accumulation are used to assess changes in the spatial variability
of permeability and to correlate these changes with salt movement, porosity change, potential rock deterioration and textural characteristics. Statistical analyses of small-scale permeability measurements are used to evaluate the drivers for decay and hence aid
2011

The objective of this report is to set out a district typology according to land cover structure, and this will be achieved through the use of statistical methodologies. An intermediate objective is to establish land cover change trends
2011

The article reviews the impacts of the crisis, and the different policy responses given to it. Based on policy documents and statistical data AA. analyse the processes on various geographic scales. According to AA.’ findings the crisis also effects
2011

and synergies associated with a particular transport investment. The results indicate the statistical significance of scale effects of transport investment, substitution effects of road investment on other types of transport investment, and political factors
2011

New aspects of European road accessibility

Permafrost is present at multiple elevations with no defined lower limit in the southern Yukon Territory, Canada. Empirical statistical modelling of permafrost probability in the region required the development of equivalent elevation, a new
temperatures at nearby climate stations, which permits prediction of equivalent elevation for the entire region. Permafrost probability modelling using equivalent elevation produced statistically significant results in several study areas.
2011

Assessment of soil erodibility in Taleghan drainage basin, Iran, using multivariate statistics
2011

Using spatial statistics to identify and characterise ethnoburbs : establishing a methodology using the example of Auckland, New Zealand
2011

Evaluating changing residential segregation in Auckland, New Zealand, using spatial statistics
2011

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