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Mixed Exponentially Weighted Moving Average–Cumulative Sum Charts for Process Monitoring
Quality and Reliability Engineering International, 2012The control chart is a very popular tool of statistical process control. It is used to determine the existence of special cause variation to remove it so that the process may be brought in statistical control. Shewhart‐type control charts are sensitive for large disturbances in the process, whereas cumulative sum (CUSUM)–type and exponentially weighted
Abbas, N., Riaz, M., Does, R.J.M.M.
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On Designing Mixed Nonparametric Control Chart for Monitoring the Manufacturing Processes
Arabian Journal for Science and Engineering, 2021Efficient control charts are used to maintain and improve the manufacturing, industrial and service processes. Control chart is a basic tool of quality practitioners for producing products that meet market requirements in terms of quality, reliability and functionality. Lack of normality is a common occurrence in these processes.
Saber Ali +5 more
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The annual music charts: the communal musical taste mix in Israel
Israel Affairs, 2020Radio is a cultural producer and a main player in the music industry. Radio operates a system that determines which music will be broadcast and which music will not make it ‘on the air,’ functionin...
Tal Laor, Yair Galily
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A multivariate sign chart for monitoring dependence among mixed-type data
Computers & Industrial Engineering, 2018Abstract Statistical process control (SPC) has been widely utilised for quality improvement and surveillance in industrial engineering. Modern industrial applications have witnessed more and more mixed-type quality characteristics such as those consisting of ordinal categorical and continuous ones.
Junjie Wang +3 more
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Recognition and quality assessment of data charts in mixed-mode documents
International Journal of Document Analysis and Recognition (IJDAR), 2008Data charts can be used to effectively compress large amounts of complex information and can convey information in an efficient and succinct manner. It is now easier to create data charts by using a variety of automated software systems. These data charts are routinely inserted in text documents and are widely disseminated over many different media ...
Sudhindra Shukla, Ashok Samal
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Design and operational charts for complete mixing activated sludge systems
Water Research, 1979Abstract This paper provides charts enabling the derivation of design and operational procedures for an activated sludge waste water treatment system including the final settler. These charts are based on a mathematical model including Monod relationships describing the microbial growth and the substrate removal in the aerator, while sedimentation in
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Mixed multivariate EWMA-CUSUM control charts for an improved process monitoring
Communications in Statistics - Theory and Methods, 2017ABSTRACTMultivariate exponential weighted moving average and cumulative sum charts are the most common memory type multivariate control charts. They make use of the present and past information to detect small shifts in the process parameter(s). In this article, we propose two new multivariate control charts using a mixed version of their design setups.
Jimoh Olawale Ajadi, Muhammad Riaz
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A mixed GWMA–CUSUM control chart for monitoring the process mean
Communications in Statistics - Theory and Methods, 2017ABSTRACTThe memory-type control charts are widely used in the process and service industries for monitoring the production processes. The reason is their sensitivity to quickly react against the small process disturbances. Recently, a new cumulative sum (CUSUM) chart has been proposed that uses the exponentially weighted moving average (EWMA) statistic,
Rizwan Ali, Abdul Haq
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A Mixed Cumulative Sum-Tukey’s Control Chart for Detecting Process Dispersion
The Journal of King Mongkut's University of Technology North Bangkok, 2019The objective of this research is to propose a mixed Cumulative Sum-Tukey Control Chart (CUSUMTCC) for detecting process dispersion using the range, when the process is symmetric and asymmetric distributions.The performance of CUSUM-TCC is compared with Tukey’s Control Chart (TCC), Cumulative Sum Control Chart (CUSUM) and Exponentially Weighted Moving ...
Rawewarlee Thitisoowaranon +2 more
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A Mixed EWMA–CUSUM Control Chart for Weibull‐Distributed Quality Characteristics
Quality and Reliability Engineering International, 2016The control charts have been widely used for process monitoring. Shewhart control chart has ability to detect large disturbances in the process. The EWMA and CUSUM charts have ability to detect a small change in the manufacturing process. In this paper, we will design a mixed EWMA–CUSUM control chart for Weibull‐distributed quality characteristics. The
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