Modeling and optimization of salinization of irrigated soil

Considered in the paper is a filtering model with concentrated sources, which can be used in problems of sprinkler, furrow, etc. irrigation. The problem of optimal control of a parabolic system is investigated, in which control effects enter in both the coefficients of the model under investigation and the right-hand side, which can be an element of a negative Hilbert space. The problem posed is regularized, and an explicit form of the gradient of a quality criterion is obtained. Bibliography: 5 titles. Translated fromObchyslyuval' na ta Prykladna Matematyka, No. 80, 1996, pp. 3–11.