Zobrazeno 1 - 10
of 352
pro vyhledávání: '"Hotelling's T-squared distribution"'
Publikováno v:
Iraqi Journal of Science. :2653-2659
A multivariate control chart is measured by many variables that are correlated in production, using the quality characteristics in any product. In this paper, statistical procedures were employed to find the multivariate quality control chart by util
Publikováno v:
IEEE Sensors Journal. 21:13603-13615
This paper deals with the fault detection of a pneumatic control valve using canonical variate analysis (CVA). CVA can find the optimal linear combinations of p-window and f-window data, so that the correlation between these combinations can be maxim
Autor:
Jiayun Jin, Geert Loosveldt
Publikováno v:
Journal of Official Statistics, Vol 37, Iss 1, Pp 97-119 (2021)
When monitoring industrial processes, a Statistical Process Control tool, such as a multivariate Hotelling T 2 chart is frequently used to evaluate multiple quality characteristics. However, research into the use of T 2 charts for survey fieldwork–
Publikováno v:
Transactions of the Institute of Measurement and Control. 43:2180-2195
In this study, we have introduced a generalized Hotelling T2 control chart based on bivariate ranked set techniques with runs rules to identify small and moderate variations in a process mean vector. To achieve this aim, plotting statistic and contro
Autor:
Jian Li, Jia Rung Wu, Stuart Rumrill, Kanako Iwanaga, Phillip D. Rumrill, Fong Chan, Jennifer Sánchez
Publikováno v:
Journal of Vocational Rehabilitation. 54:33-42
BACKGROUND: Little is known about the experiences and concerns of Hispanic Americans with multiple sclerosis (MS), especially how their experiences and concerns compare to those of Caucasian Americans with MS OBJECTIVE: The purpose of this study was
Publikováno v:
International Journal of Quality & Reliability Management. 38:1265-1277
PurposeThis research proposes a multivariate control chart, whose parameters are optimized using genetic algorithms (GA) in order to accelerate the detection of a change in the vector of means.Design/methodology/approachThis chart is based on a varia
Autor:
A. A. Olosunde, A. T. Soyinka
Publikováno v:
Sankhya B. 83:350-370
In this paper, we develop the asymptotic distribution of the covariance structure of an asymmetric multivariate exponential power distribution (AMEPD) by extending the existing Hotelling t2 distribution to its generalized form. The obtained results
Autor:
Mei Zhang, Dong Feng, Hanyu Qian, Yao Wang, Suya Lu, Li Tan, Luo Nan, Qing Huang, Yihong Lu, Qingshui Shi
Publikováno v:
Journal of Separation Science. 43:2042-2052
The current quality control methods relying mainly on chromogenic reaction can hardly ensure the quality and safety of the biochemical drug with complex chemical composition. Therefore, a chromatographic fingerprint method was developed for the quali
Autor:
Bhagwan Kumar Mishra, Anupam Das
Publikováno v:
Materials Today: Proceedings. 41:1107-1109
Process monitoring strategies are an amalgamation of procedures and techniques for monitoring of the manufacturing process for the eventual goal of production of good quality end product. The study delves into the development of a monitoring strategy
Publikováno v:
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V. 168
Batch freeze-drying of pharmaceutical products in vials may result in a high degree of intra-batch variability due to several reasons, e.g. non uniform heating rate in the drying chamber. Therefore, product quality in the final product has to be chec