Robust Control Charts for Time Series Data

This article presents a control chart for time series data, based on the one-step- ahead forecast errors of the Holt-Winters forecasting method. We use robust techniques to prevent that outliers affect the estimation of the control limits of the chart. Moreover, robustness is important to maintain the reliability of the control chart after the occurrence of alarm observations. The properties of the new control chart are examined in a simulation study and on a real data example.Control chart;Holt-Winters;Non-stationary time series;Out- lier detection;Robustness;Statistical process control

Robust Control Charts for Time Series Data

This article presents a control chart for time series data, based on the one-step- ahead forecast errors of the Holt-Winters forecasting method. We use robust techniques to prevent that outliers affect the estimation of the control limits of the chart. Moreover, robustness is important to maintain the reliability of the control chart after the occurrence of alarm observations. The properties of the new control chart are examined in a simulation study and on a real data example.

Theoretical Reflections on the Underutilization of Employee Talents in the Workplace and the Consequences

This article describes "chronic relative underperformance" (CRU)-a special example of P-E misfit. It investigates literature on giftedness, underachievement, underemployment, workplace boredom, and boreout, and connects these to clinical psychological views on mentalization. The intent is to develop thoughts that are useful in the understanding of why some employees fail to thrive, even though they are performing seemingly well enough as regards to the targets of the employer, and offer a frame of reference that can lead to further understanding of this condition. CRU is an issue that is hardly described within the literature. Recognizing CRU in the workforce and taking steps to counter its effects may lead to a more efficient and elegant way to reach organizational, and personal, goals