| Article ID: | iaor19911114 |
| Country: | United States |
| Volume: | 38 |
| Issue: | 2 |
| Start Page Number: | 364 |
| End Page Number: | 369 |
| Publication Date: | Mar 1990 |
| Journal: | Operations Research |
| Authors: | Zazanis Michael A. |
The paper considers infinitesimal perturbation analysis estimates for the derivative of moments of the system time in an M/M/1 queue in steady state. The unbiasedness of these estimates is established for derivatives with respect to the mean service time and the arrival rate. A similar result is obtained for the system time of the