Introduction-Elements of the Shop Floor Scheduling Problems (Continued) √Job sequencing Sequencing or priority sequencing:the process of determining which job is started first on some machines or work center by priority rule; Priority rule:the rule used for obtaining a job sequencing; Priority rule evaluation criteria To meet corresponding objectives of scheduling; Common standard measures: > Meeting due date of customers or downstream operations; Minimizing flow time(the time a job spends in the shop flow); > Minimizing WIP; > Minimizing idle time of machines and workers (Maximizing utilization). 圈上泽充鱼大姿Introduction-Elements of the Shop Floor Scheduling Problems • (Continued)  Job sequencing  Sequencing or priority sequencing: the process of determining which job is started first on some machines or work center by priority rule;  Priority rule: the rule used for obtaining a job sequencing;  Priority rule evaluation criteria  To meet corresponding objectives of scheduling;  Common standard measures:  Meeting due date of customers or downstream operations;  Minimizing flow time (the time a job spends in the shop flow);  Minimizing WIP;  Minimizing idle time of machines and workers (Maximizing utilization)