MTWR

AcronymDefinition
MTWRMonday, Tuesday, Wednesday, Thursday (university scheduling)
MTWRMetroplex Two Way Radio (Dallas, TX; est. 1982)
References in periodicals archive ?
Rules WIP AV TT AV WT AV QT AV QL AV Total Rank FIFO 4 10 10 8 11 43 LIFO 3 3 3 4 5 18 SPT 5 4 5 1 4 19 LPT 12 11 11 13 14 61 SPS 2 2 2 5 3 14 LPS 11 14 14 14 13 66 STPT 7 13 13 11 11 55 LTPT 4 4 4 9 6 27 ECT 6 9 9 6 8 38 LCT 9 7 7 7 7 37 SWT 10 8 8 10 10 46 LWT 1 6 6 3 2 18 LTWR 8 12 12 12 9 53 MTWR 4 1 1 2 1 9 WIP AV = Work In Progress Average TT AV = Total Time Average WT AV = Waiting Time Average QT AV = Queue Time Average QL AV = Queue Length Average 5.2 Hybrid dispatching rules
5 shows that combination between SPT and ECT creates the minimum queuing time and we observed that combination between LWT and MTWR is able to create the minimum queue length of job in the system.
Hybrid rule SPT and ECT shows the best performance in queue time criterion and the combination rule between LWT and MTWR shows the best performance for queue length average.
Table V: Comparison hybrid and single dispatching rules Performance Single Hybrid Rank Order Total 5401.8 5396 1 2 Output 5379.8 5373.8 1 2 WIP Average 8.7 8.5 2 1 Min 15 14 2 1 Max 4 4 1 1 Total Time Average 265.55 266.42 1 2 Min 422.41 420.33 2 1 Max 152.43 158.97 1 2 Waiting Time Average 115.09 115.97 1 2 Min 162.3 161.46 2 1 Max 54.46 61.05 1 2 Queue Time Average 22.25 22.53 1 2 Max 63.562 63.69 1 2 Queue Length Average 7.4615 8 1 2 Max 20 21 1 2 Min 1 2 1 2 Total 20 27 For this type of factory with job shop scheduling problem, the single rule MTWR become the best rule amongst other single dispatching rules evaluated in this experiment.