| Article ID: | iaor1991165 |
| Country: | India |
| Volume: | 27 |
| Issue: | 3 |
| Start Page Number: | 145 |
| End Page Number: | 152 |
| Publication Date: | Sep 1990 |
| Journal: | OPSEARCH |
| Authors: | Ramamurthy K.G. |
| Keywords: | social |
A three-state device system is one in which the components as well as the system can fail in two different modes. Such a system is commonly modelled using a binary coherent structure and its dual. This paper derives this model as a logical consequence of certain reasonable conditions imposed upon the behaviour of such systems. It also gives a reliability version of Arrow’s Impossibility Theorem.