Research Article
Service Capacity Reserve under Uncertainty by Hospital’s ER Analogies: A Practical Model for Car Services
Table 2
Queuing system steady-state measures of effectiveness.
| Steady-state measures of effectiveness | Variable | Name |
| | Number of vehicles arriving to the service | Nveh |
| Simulation variable | Average number of vehicles in the Q-NTec | |
| Simulation variable | Average number of vehicles in the Queue | Lq |
| | Fraction of time that a technician is idle | FTI |
| | Average number of vehicles that are being worked | VhW |
| | Average number of technicians that are working | Wtec |
|
EFCTec = | Operating efficiency per vehicle | EFCVeh |
| | Operating efficiency per technician | EFCTec |
| | Service rate [vehicles/hour] | |
| | Arrival rate [vehicles/hour] | |
| | Probability vehicles are in the queuing system (Q-Ntec) | Pn |
| | Probability of no calling units in the queuing system. | Po |
| Initial Po_inverse = 0, then: | Po inverse | Po−1 |
| | Operator | f(den_1) |
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