| geographic information systems as a tool for control program management for schistosomiasis in egypt. | during a 4-year study a geographic information system (gis) risk model was constructed for predicting the relative risk of schistosomiasis in kafr el-sheikh governorate, egypt. a 1-year 1990-1991 time series on diurnal temperature difference (dt) prepared from the advanced very high resolution radiometer (avhrr) sensor on the noaa-11 satellite was used to develop a regional risk model for the nile delta based on thermal-hydrological domains. a may 15, 1990 landsat tm scene (path 177, row 38) was ... | 2001 | 11378141 |