- SD/Tijuana Border Data University of California, San Diego Below are a number of excellent examples of recent SD/Tijuana Border research projects. San Diego Dialogue and EL Colegio de la Frontera Norte (COLEF) have both been very active on the border. The French Institute of Research for Development in Cooperation (ORSTOM) has had a GIS site located at COLEF for several years working on the ...gort.ucsd.edu/mw/tj/tj.html