## 4 Discussion
### Staffing Issues in the Second Manufacturing Area
#### 4.5.1 Human Support Situation Analysis
The initial production line yields 21 work-in-progress (WIP) units, with a utilization rate of 48.37%. The second production line yields a total of 15 work-in-progress (WIP) units, operating at a utilization rate of 32.39%. The third production line yields two work-in-progress (WIP) units, operating at a utilization rate of 3.4%. The gas-phase drying furnace has a utilization rate of 63.75%. The staffing study findings for Scenario 1 shown in Table 10 indicate that by evenly allocating 24 individuals across the morning and evening shifts to the five production lines of the D group, the overall output increases by 4 units to a total of 52 Taiwan items, compared to the initial production. The primary cause of this growth is mostly attributed to the surge in manufacturing activities. During the analysis period, Group D's five production lines yielded varying quantities. The first line, for instance, generated 22 units of work-in-progress (WIP) with a utilization rate of 51.72%. The second line yielded a total of 24 units with a utilization rate of 50.57%, whilst the third line produced 21 units with a utilization rate of 45.18%. The utilization rates of the two hot air-drying furnaces in the manufacturing area were 82.66% and 80.44%, respectively. The gas-phase drying furnace had a utilization rate of 100%. The examination of Scenario 1 demonstrates enhancements in multiple analytical metrics as compared to the initial configuration, mostly attributed to augmented production in manufacturing area one and heightened acceptance of work-in-progress manufacturing in manufacturing area two. Since the production workers of Group D in Scenario 1 are concentrated in the morning shift, 24 production workers in the morning shift were evenly divided into the morning shift and the middle shift during the analysis and then analyzed and studied. According to the staffing analysis results of Scenario 2, as shown in Table 11, it can be seen that if 12 people on the morning shift, 12 people on the middle shift, and 9 people on the evening shift are evenly distributed to the five production lines of the D group. The total output is 52 units, an increase of 4 units compared to the original production, mainly due to the rise in the production of manufacturing area one, which is the same as the output of Scenario 1. \begin{table}
\begin{tabular}{c c c} \hline \hline Analysis Project & \begin{tabular}{c} Output \\ Quantity (Units) \\ \end{tabular} & \begin{tabular}{c} Machine \\ Utilization Rate \\ \end{tabular} \\ \hline Total output & 48 & - \\ \hline \begin{tabular}{c} Output of group D \\ production line \\ \end{tabular} & 21 & 48.37\% \\ \hline \begin{tabular}{c} Group D production \\ line’s second output \\ \end{tabular} & 15 & 32.39\% \\ \hline \begin{tabular}{c} Group D production \\ line team B \\ \end{tabular} & 10 & 20.17\% \\ \hline \begin{tabular}{c} Group D production \\ line four output \\ \end{tabular} & 2 & 3.4\% \\ \hline \begin{tabular}{c} Group D line crew \\ 24 people in the morning/ \\ 0 people in the middle/ \\ 9 people in the evening \\ \end{tabular} & \begin{tabular}{c} Group D production \\ line five output \\ \end{tabular} & 1 & 2.13\% \\ \hline \begin{tabular}{c} First hot air-drying \\ furnace utilization rate \\ \end{tabular} & - & 61.42\% \\ \hline \
\begin{tabular}{c} Second hot air-drying \\ furnace utilization rate \\ \end{tabular} & - & 62.85\% \\ \hline
\begin{tabular}{c} Gas-phase drying \\ furnace utilization rate \\ \end{tabular} & - & 63.75\% \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Allocation of the original situation in the second manufacturing area. The five production lines of Group D each produced different quantities during the analysis time.