Dear Editor, This letter establishes several criteria for fixed-time stability and predefined-time of impulsive systems. First, sufficient conditions systems are presented to treat the destabilizing impulses hybrid involving multiple jump maps by control without linear feedback regulation. It determines robustness nonlinear against disturbance which has effect dynamics. Then, is ensured under r...

The present study examined the effect of the geometric parameters of the Rockfill dams on the 2D static analysis of slope stability. In this regard, several numerical models analyzed for eight heights, three slopes of upstream and downstream, three vertical and skewed core thicknesses and four different impounding time stages namely, "End of Construction", "Full Reservoir", "Half Full Reservoir...