This paper analyzes an M/M/2 queueing system with two heterogeneous servers. Both servers goes on vacation when there is no customers waiting for service after this server 1 is always available but the other goes on vacation whenever server 2 is idle. The vacationing server however, returns to serve at a low rate as an arrival finds the other server busy. The system is analyzed in the steady st...

This paper deals with the steady state behaviour of an Mx/G/1 queuing system with two different vacation periods under multiple vacation policy, where length of the first vacation is different from the rest of the vacations. We are concerned with the distribution of the queue size at busy period initiation epoch and distribution of the unfinished work. Further, we present a simple transform fre...

The steady movement of women with children into the workforce has dramatically increased the demand for affordable, quality child care services.' Yet, while demand for care climbs, working conditions in the child care industry remain stagnant, and child care workers labor at the very bottom of the economic ladder. As a group, they are poor women who are disproportionately of color and who rarel...