Urban environment: urban impervious surface estimation, urban landscape mapping, urban land change detection at multiple spatial and temporal scales, scale-effect of census-based urban land surface temperature modeling, urban environmental quality assessment with the integration of remote sensing and GIS;
Demographic and Social issues: scale-effect of census-based residential population estimation, spatial analysis of foreclosure pattern in California;
Natural Resource Management: the impact of Marcellus Shale gas drilling activities on water quality, the effect of land use and land cover change on water quality;
Remote sensing and GIS algorithms validation, comparison, and application: fractals, spatial autocorrelation indexes, spatial metrics, texture, artificial neural network, object-oriented classification, scale effect examination based on multiple spatial, spectral, and temporal resolution.
