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Spatial correlations in multifractals
Physical Review A, 1987Spatial correlations within multifractals or fractal measures are considered. It is shown how scaling dimensions can be used to predict scaling laws for spatial correlation functions. It is concluded that the overlaid singularity picture does not provide an adequate description of the spatial properties of multifractals, and that blob concepts seem to ...
, Cates, , Deutsch
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Robust Extraction of Spatial Correlation
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2006The increased variability of process parameters makes it important yet challenging to extract the statistical characteristics and spatial correlation of process variation. Recent progress in statistical static-timing analysis also makes the extraction important for modern chip designs.
Jinjun Xiong +2 more
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Spatial-Temporal Event Correlation
2009 IEEE International Conference on Communications, 2009Temporal event correlation deals with removing temporally redundant events to produce synthesized events, simplifying downstream processing. In situation management applications and location-based services, it is necessary to incorporate spatial constraints into the correlation process.
John F. Buford +2 more
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Spatial Correlation in Ecological Analysis
International Journal of Epidemiology, 1993This paper presents a statistical approach, originally developed for mapping disease risk, to ecological regression analysis in the presence of spatial autocorrelated extra-Poisson variation. An insight into the effect of allowing for spatial autocorrelation on the relationship between disease rates and explanatory variables is given. Examples based on
CLAYTON D +2 more
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Searching for Correlates of Spatial Ability
Perceptual and Motor Skills, 1985A brief questionnaire about sense of direction and mechanical experience correlated with Mental Rotation scores. Several new, experimental measures thought to be related to spatial ability did not in fact correlate with Mental Rotation scores.
S G, Vandenberg, A R, Kuse, G P, Vogler
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Spatial correlation effects in a laser
Physical Review A, 1996Spatial correlation effects are analyzed in a laser near and below its threshold of oscillation by integrating the modifications in the correlation function of intensity fluctuations and related parameters. The pump parameter of the laser is shown to depend on the field spatial coherence which arise due to transverse-mode structure of the laser field ...
, Agarwal, , Chopra
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Moiré optical spatial correlator
Optics Letters, 1984A new optical method to obtain the spatial-correlation integral of moiré maps is described and demonstrated. This method permits the direct and quantitative determination of the optical spatial correlation between two objects. The method can be applied to any optical quantity mapped by any moiré technique.
O, Kafri, T, Chin, D F, Heller
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The Influence of Spatially Correlated Heteroskedasticity on Tests for Spatial Correlation
2004In cross sectional regression models the possibility of spill-overs between neighboring units is increasingly being recognized in both the theoretical and applied literature.1 Within a regression framework, typically recognized forms of such spill-overs relate to the model’s dependent and independent variables, as well as to the error terms.
Harry H. Kelejian, Dennis P. Robinson
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Propagation of spatial correlation vortices
Journal of the Optical Society of America B, 2005Propagation of partially coherent optical vortices is investigated using mutual coherence function formalism. Analytical description allows to define and to study the characteristic features of the cross-correlation function of a vortex in the low-coherence limit.
Ivan D. Maleev, Grover A. Swartzlander
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Spatial correlation in ultrawideband channels
IEEE Transactions on Wireless Communications, 2008Correlated fading adversely affects the spatial multiplexing and diversity performance of multiple-antenna systems. This paper presents an empirical investigation of spatial correlation in ultrawideband (UWB) indoor channels in the FCC- allocated 3.1-10.6 GHz band.
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