Mr. Chen received a PhD degree in Civil and Environmental Engineering from University of Wisconsin-Madison, U.S.A. His research interest has been in the areas of GIS, digital image processing, and integration of remote sensing and GIS for environmental applications. He has been the principal investigator for various projects including: land use change detection using satellite images, marine pollution investigation using remote sensing technologies, agricultural applications using time series satellite images, and integration of geographic information to improve environmental sustainability in Central America.nd use change detection using satellite images, marine pollution investigation using remote sensing technologies, agricultural applications using time series satellite images, and integration of geographic information to improve environmental sustainability in Central America.