Table 2.
Identified observed covariates that are associated with the failure and repair database
| Failure database | Repair database | |||||||
|---|---|---|---|---|---|---|---|---|
| Sub-system | Identified covariates | Sub-system | Identified covariates | Sub-system | Identified covariates | |||
| Wheel loader | v1 | Shift | Dump-truck | v1' | Shift | Loader & Dump-truck | z1 | Shift |
| v2 | Working place | v2' | Number of service | z2 | Involved maintenance crew | |||
| v3 | Proportion with truck | v3' | Proportion with loader | z3 | Weather condition | |||
| v4 | Weather condition | v4' | Rock fragmentation | z4 | Precipitate | |||
| v5 | Precipitate | v5' | Slope of road | z5 | Temperature | |||
| v6 | Temperature | v6' | Weather condition | |||||
| v7 | Road condition | v7' | Precipitate | |||||
| v8 | Number of service | v8' | Temperature | |||||
| v9 | Rock fragmentation | v9' | Road condition | |||||
| v10 | Rock kind | v10' | Rock kind | |||||
| v11' | Hauling distance | |||||||