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Tampering (quality Control)
Tampering in the context of a controlled process is adjusting the process on the basis of outcomes which are within the expected range of variability. The net result is to re-align the process so that an increased proportion of the output is out of specification. The term was introduced in this context by W. Edwards Deming, and he was a strong proponent of using control charts to avoid tampering. See also * Incentive program * Control chart References *W. Edwards Deming (1994) ''The New Economics for Industry, Government, Education'', 2nd edition, Massachusetts Inst Technology. (Chapter 9.) *Deming, W. Edward (1986), ''Out of the Crisis'', MIT Center for Advanced Engineering Study, 327–32. (2000 edition: ) *Gitlow, Howard; Gitlow, Shelly; Oppenheim, Alan; Oppenheim, Rosa (1989), ''Tools and Methods for The Improvement of Quality'', CRC Press *Krehbiel, T. C. (1994), "Tampering with a Stable Process". ''Teaching Statistics'', 16, 75–79. Quality control {{stati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Process Control
An industrial process control in continuous production processes is a discipline that uses industrial control systems to achieve a production level of consistency, economy and safety which could not be achieved purely by human manual control. It is implemented widely in industries such as automotive, mining, dredging, oil refining, pulp and paper manufacturing, chemical processing and power generating plants. There is a wide range of size, type and complexity, but it enables a small number of operators to manage complex processes to a high degree of consistency. The development of large industrial process control systems was instrumental in enabling the design of large high volume and complex processes, which could not be otherwise economically or safely operated. The applications can range from controlling the temperature and level of a single process vessel, to a complete chemical processing plant with several thousand control loops. History Early process control breakthr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incentive Program
An incentive program is a formal scheme used to promote or encourage specific actions or behavior by a specific group of people during a defined period of time. Incentive programs are particularly used in business management to motivate employees and in sales to attract and retain customers. Scientific literature also refers to this concept as pay for performance. Types Employee Employee incentive programs are programs used to increase overall employee performance. While employees tend to approve of incentive programs, only 27% of companies have such programs in place. Employee programs are often used to reduce turnover, boost morale and loyalty, improve employee wellness and safety, increase retention, and drive daily employee performance. Consumer Consumer incentive programs are programs targeting the customers of an organization. Increases in a company's customer retention rate as low as 5% tend to increase profits by 25%-125%. Consumer programs are becoming more widely us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Chart
Control charts is a graph used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions. (ISO 7870-1) The hourly status is arranged on the graph, and the occurrence of abnormalities is judged based on the presence of data that differs from the conventional trend or deviates from the control limit line. Control charts are classified into Shewhart individuals control chart (ISO 7870-2) and CUSUM(CUsUM)(or cumulative sum control chart)(ISO 7870-4). Control charts, also known as Shewhart charts (after Walter A. Shewhart) or process-behavior charts, are a statistical process control tool used to determine if a manufacturing or business process is in a state of control. It is more appropriate to say that the control charts are the graphical device for Statistical Process Monitoring (SPM). Traditional control charts are mostly designed to monitor process parameters when the underlying form of the process distributio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
