Classification ; Cluster analysis ; Globalization ; Network ; Principalcomponentsanalysis ; Taxonomy ; Urban geography ; World city
The paper develops an exploratory research design using principalcomponents analyses. Multiple solutions are used to explore the structure of a matrix defined by 123 cities and 100 global service firms. Using 13 separate analyses, the main finding
Canada ; Glacier ; Glacier mass balance ; Kyrgyzstan ; Methodology ; Model ; Northwest Territories ; Principalcomponentsanalysis ; Sampling ; Spatial statistics
Island, Canada) and Abramov Glacier (Alai Range, Kirgizia), show that the correlation decreases with the difference in elevation between the points. A principalcomponentanalysis confirms that the effective sample size is very small.
The A. aims to determine the effective sample size of 2 glaciers by analysis of the spatial correlation between point mass balance measurements. Correlograms from multiple time series of point mass balance, measured on White Glacier (Axel Heiberg
Air temperature ; China ; Impact ; Periglacial features ; Permafrost ; Plateau ; Principalcomponentsanalysis ; Soil temperature ; Spatial variation ; Temperature ; Tibet
been diagnosed by principalcomponentanalysis and power spectral analysis methods.
Alluvial cone ; Arid area ; Arizona ; Digital elevation model ; Geomorphology ; Mountain ; Numerical model ; Pediment ; Principalcomponentsanalysis ; Slope gradient ; United States of America
The aim of this research is to determine if certain geomorphic characteristics of mountain slopes backing bedrock pediments and alluvial slopes discriminate their occurrence at the slope base. Principalcomponentanalysis results indicate mountain
Economic development ; Poland ; Principalcomponentsanalysis ; Regional development ; Regional disparities
to the knowledge base in higher-order principalcomponentsanalysis. the relationship between regional differences in the base and the level of socio-economic development has been studied. - (BJ)
Composite grains in Maas, Meuse, sediments: a survey and a discussion of their opaque components
the subtransluscent to opaque matter in these composites, which principally represent actual rock fragments. This suggests that the sediments investigated contain products of rather freshly disintegrated rocks. The opaque components enable2 important groups of rocks
The opaque mineralogy of composite grains in acid-treated heavy mineral concentrates from sediments of the river Maas was studied in reflected light and by SEM. EDXRA analysis. Secondary rutile, secondary ilmenite and hematite constitute
Spatial analysis of the factors contributing to the relationship between the transient, meridional eddy sensible, and latent heat flux in the southern hemisphere
In this paper principalcomponentanalysis (PCA) and singular value decomposition (SVD) are used to define the importance of the variables contributing to the relationship between the transient latent and sensible heat fluxes and to show
their temporal and spatial variation. Both methods of analysis produced 2 very important uncorrelated modes of variability in January and July, indicating that the transient heat fluxes are influenced by few controlling factors. The AA. suggest that these modes
Community health level is examined by means of principalcomponentanalysis for 28 indices by 212 communities. As a result, community health level and the distribution pattern are illustrated on the maps. - (SGA)
This study offers an example of regression following factor analysis. In substituting correspondence analysis for the principalcomponentsanalysis of Imbrie and Kipp, the A. improves on the results of them: firtsly, he obtains higher correlation
Air mass ; Atmospheric circulation ; Classification ; Glacier ; Glacier mass balance ; Norway ; Principalcomponentsanalysis ; Summer ; Synoptic climatology ; Winter
glaciers. To achieve this, a Temporal Synoptic Index (TSI) was derived for a 30-year period for a number of synoptic meteorological stations in Norway. The TSI is derived using PrincipalComponentAnalysis (PCA) and subsequent clustering of component scores
Land use ; Landslide ; Model ; Multivariate analysis ; Natural hazards ; Principalcomponentsanalysis ; Satellite imagery ; Slope ; Slovenia ; Vegetation
images were merged using PrincipalComponentAnalysis method and classified with an unsupervised classification. Using multivariate statistical analysis (factor analysis), the interaction between factors and landslide distribution were tested
China ; Climate extreme ; Climatic change ; Linear regression ; Principalcomponentsanalysis ; Space time ; Temperature ; Watershed ; Yangtze
Based on daily maximum and minimum temperature observed by the China Meteorological Administration at 115 meteorological stations in the Yangtze River Basin from 1962 to 2011, the methods of linear regression, principalcomponentanalysis
cold and warm indices, asymmetry of the tendencies can be found; Principalcomponentanalysis of the extreme temperature indices are divided into 5 components from the factor load matrix, and correlation coefficients of the temperature extremes
and correlation analysis are employed to investigate the temporal variability and spatial distribution of temperature extremes. Sixteen indices of extreme temperature are selected. The results highlight that : The cold indices show a decreasing trend, while
A mental map has been constructed using the principalcomponentsanalysis of « Behavioural geography » of Gould's and Lynch's conception. With help of another quantitative method the multifactoral conditionality of preferences has been analysed