The paper investigates stochastic processes directed by a randomized t
ime process. A new family of directing processes called Hougaard proce
sses is introduced. Monotonicity properties preserved under subordinat
ion, and dependence among processes directed by a common randomized ti
me are studied. Results for processes subordinated to Poisson and stab
le processes are presented. Potential applications to shock models and
threshold models are also discussed. Only Markov processes are consid
ered.