The presents study was aimed to create new methods for extraction and analysis of land elevation contour lines, automatic extraction of water bodies (river basins and lakes), from the digital elevation models (DEM) of a test area. And extraction of villages which are fell under critical water scarcity regions for agriculture and drinking water with respect to their elevation data and available ...

We consider a simple crop irrigation model and study the optimal control which consists of maximizing the biomass production at harvesting time. A specificity this work is to impose quota on water used for irrigation, in context limited resources. The written as 2d non-autonomous dynamical system with state constraint, non-smooth right member given by threshold-based soil stress functions. ...