Several developing economies have recently introduced conditional cash transfer programs, which provide money to poor families contingent on certain behavior, usually investments in human capital, such as sending children to school or bringing them to health centers. The approach is both an alternative to more traditional social assistance programs and a… (More)
The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings,… (More)
In this paper, the concepts of uniform stability and fixed-station stability of parametric difference linear systems are introduced in order to guarantee the boundness of solutions for such systems. Spectral sufficient conditions for stability of parametric differential linear systems are given.