 |
Traffic load growth rate |
{0.4, 0.9} |
 |
Arrival rate |
{0.25,5,10} |
 |
Initial workload |
{0.9} |
 |
Standard deviation |
{5} |
3DPT
|
A 3D printing task |
[400,3000] |
| Px |
Printer number x |
|
 |
The number of the printer |
[1,60] |
| Current |
At time t |
|
| Prev |
At time t-1 |
 rnk |
The rank of a 3DPT in the ready queue of a 3DP |
| PR |
The priority of a 3DPT |
[1,5] |
| cat |
The category of both 3DPs and 3DPTs |
{PPE, SP} |
| MN |
Maximum Number |
|
| LP |
Lower Priority 3DPT |
 |
A 3DPT can be nested with other jobs |
| NN |
A 3DPT cannot be nested with other jobs |
| sub |
Sub-task |
| NP |
Number of parts in each 3DPT |
| NPL |
Number of parts’ limit for each 3DP |
| PV |
Printing volume |
| PVL |
Printing volume limit |
| RT |
Resting time of a 3DP |
 |
Arrival time of a 3DPT |
 |
Starting time of a 3DPT |
 |
Printing time of a 3DPT |
 |
Actual printing time of a 3DPT |
 |
Delivery time of a 3DPT |
 |
Finishing time of a 3DPT |
 |
Logistics time |
 |
Time constants of a 3DP |
 |
Warm-up time of a 3DP |
[8,10] min |
 |
Cooling-down time of a 3DP |
[4,9] min |
 |
Take-down time of a 3DP |
[1,3] min |
| WTS |
Working time summation of a 3DP |
|
| WTL |
Working time limit of a 3DP |
| RWT |
Remaining working time of a 3DP |
| DL |
Deadline for a 3DPT |
 |
Distance between a demander and a 3DP |
Speed
|
The logistics speed |
60 km/hr |
| Lg |
Longitude of a location |
|
| Lat |
Latitude of a location |
| LT |
The last task in the ready queue of a 3DP |
| mt |
Model type of a 3DPT |
