 
                                                                                | Article ID: | iaor20043369 | 
| Country: | South Korea | 
| Volume: | 28 | 
| Issue: | 1 | 
| Start Page Number: | 37 | 
| End Page Number: | 49 | 
| Publication Date: | Mar 2003 | 
| Journal: | Journal of the Korean ORMS Society | 
| Authors: | Chae Kyung-Chul, Yeo Mo-Se, Kim Nam-ki, Ahn Chang-Won | 
| Keywords: | markov processes | 
Using the concept of closed queueing network, we present a consistent way of interpreting existing quality relations among queueing systems. Also, using enbedded Markov chains, we present a few new quality relations for the queueing systems with negative customers.