Results 11 to 20 of about 413,641 (267)

Monitoring Betaine Using Interval Time Between Events Control Chart

open access: yesFrontiers in Nutrition, 2022
A generalization of moving average (MA) control chart for the exponential distribution under classical statistics is presented in this article. The designing of the MA control chart for the exponential distribution under neutrosophic statistics is also ...
Muhammad Saleem   +2 more
doaj   +1 more source

A New Attribute Control Chart Using Multiple Dependent State Repetitive Sampling

open access: yesIEEE Access, 2017
In this paper, a new attribute control chart using multiple-dependent state repetitive sampling is designed. The operational procedure and structure of the proposed control chart is given.
Mansour Sattam Aldosari   +2 more
doaj   +1 more source

Explicit analytical solutions for the average run length of modified EWMA control chart for ARX(p,r) processes [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
Statistical process control (SPC) plays a necessary role in manufacturing industry processes. An essential tool for SPC used for monitoring, measuring, controlling, and improving quality in various fields is the control chart.
Korakoch Silpakob   +3 more
doaj   +1 more source

A New Control Chart for Monitoring Reliability Using Sudden Death Testing Under Weibull Distribution

open access: yesIEEE Access, 2017
In this paper, a new control chart using sudden death testing is designed by assuming that the lifetime/failure time of the product follows the Weibull distribution. The structure of the proposed chart is presented.
Muhammad Aslam   +2 more
doaj   +1 more source

The Expected Average Run Length of the EWMA Median Chart with Estimated Process Parameters

open access: yesAustrian Journal of Statistics, 2020
The performance of a control chart is commonly investigated based on the assumption of known process parameters. Nevertheless, in most manufacturing and service applications, the process parameters are usually unknown to practitioners.
Huay Woon You   +3 more
doaj   +1 more source

A Variable Control Chart under the Truncated Life Test for a Weibull Distribution

open access: yesTechnologies, 2018
In this manuscript, a variable control chart under the time truncated life test for the Weibull distribution is presented. The procedure of the proposed control chart is given and its run length properties are derived for the shifted process. The control
Nasrullah Khan   +3 more
doaj   +1 more source

A Comparison of Shewhart-Type Time-Between-Events Control Charts Based on the Renewal Process

open access: yesIEEE Access, 2020
To study the high quality processes, time-between-events (TBE) control charts have several advantages over the ordinary control charts. However, the existing TBE charts are based on the exponential distribution, which limit the application of these ...
Sajid Ali   +3 more
doaj   +1 more source

On Computing Average Common Substring Over Run Length Encoded Sequences [PDF]

open access: yesFundamenta Informaticae, 2018
The Average Common Substring (ACS) is a popular alignment-free distance measure for phylogeny reconstruction. The ACS of a sequence X[1, x] w.r.t. another sequence Y[1, y] is ACS(X, Y) =  1 x ∑ i=1 x max j lcp(X[i, x], Y[j, y]) The lcp(·, ·) of two input sequences is the length of their longest common prefix.
Sahar Hooshmand   +3 more
openaire   +3 more sources

A Multivariate Control Chart for Monitoring Several Exponential Quality Characteristics Using EWMA

open access: yesIEEE Access, 2018
In this paper, we propose a new multivariate control chart for monitoring several exponential distributed characteristics. We transform each exponential variable into the one following an approximately normal distribution.
Nasrullah Khan   +3 more
doaj   +1 more source

Monitoring Reliability for Three-Parameter Frechet Distribution Using Control Charts

open access: yesIEEE Access, 2020
Control Charts for attributes have been widely adopted for examining the fraction non-conforming or non-conformities in a process. However, Shewhart control charts may face some practical problems when the process fraction of non-conformities is very low.
Youlong Wu   +4 more
doaj   +1 more source

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