Figure 14.
The figure contains four product stock status graphs (a, b, c, d) and one error graph at the bottom. Each stock status graph plots product stock levels over 100 months on the horizontal axis against stock units on the vertical axis. Graph (a) shows the base run, with blue, red, and green lines indicating actual product stock, maximum stock, and minimum stock respectively. Graph (b) displays accuracy control, while graphs (c) and (d) represent stock control and combined accuracy plus stock control. Across all, the blue line fluctuates sharply, often exceeding or falling below red and green thresholds, particularly in the base run and stock control scenarios. Graph (d) demonstrates reduced fluctuation under combined control. The bottom graph shows cumulative product stocking error, ranging from 0 to about 602,700 units. Stock control produces the highest error with a steep upward trend, while accuracy control and combined strategies limit error growth, and the base run remains lowest. The comparison highlights that integrated controls improve stock stability and reduce error over time.Product stock status and stocking error under scenarios
Source: Authors’ own work