The Influence on an Activity´s Total Float of a Change in its Duration in Networks with Generalized Precedence Relations (GPRs)

This paper proposes the concepts of node´s early (later) realization time (ER, LR), node´s early (later) possible realization time (EPR, LPR), and gives the formulas of ER, LR, EPR, LPR, total float. And then, we classify the preconditions which determine the change of activities´ total floats. Furthermore, the laws of the influence of a change in an activity´s duration on its total float are explored and a computational example is presented.