Results 251 to 260 of about 333,390 (298)

On Generalizing Process Capability Indices

Quality Technology & Quantitative Management, 2010
AbstractA generalized process capability index, defined as the ratio of proportion of specification conformance (or, process yield) to proportion of desired (or, natural) conformance, has been developed. Almost all the process capabilities defined in the literature are directly or indirectly associated with this generalized index. Normal as well as non-
Sudhansu S. Maiti, Mahendra Saha, Asok K. Nanda   +2 more
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Squared Error Loss of Process Capability Indices

Economic Quality Control, 2001
In this paper, we extend Johnson's work (2) of formulating the relationship between process capability indices (PCI) and expected squared error losses. Moreover, a comparison is made between the expected squared error loss of PCI under the specified capability index value.
Chen, Chung-Ho, Chou, Chao-Yu
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SME’s development indicators and organizational capability

Human Systems Management, 2018
Small and medium enterprises (SMEs) play a crucial role in the economyof Cigondewah, Bandung, West Java, Indonesia. The issues that small-scale garment business owners face include employment, location, marketing and technology. Their main concern is, however, organizational capability development.
Abdurohim, Dindin, Susila, Yanti
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Fit capability indices and their applications

International Journal of Production Research, 1996
Current methods for assuring assembly accuracy are mainly based on process capabilities and specification limits of each mating part without considering the interrelationship between the distribution of fit size and those of mating sizes (typically, hole and shaft).
Z. ZHANG, X. D. FANG‡
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Testing multi-characteristic product capability indices

The International Journal of Advanced Manufacturing Technology, 2006
Recently, studies associated with testing the quality and performance of each process for a product with multi-characteristics are proposed more often. However, most studies are limited to discussing one single type of quality characteristic. Practically, a multi-characteristic product is potentially composed of three types: smaller-the-better, larger ...
Yu, K.T., Sheu, S.H., Chen, K.S.
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Process capability indices and product reliability

Microelectronics Reliability, 2001
Abstract This paper discusses process capability indices— C p and C p k , their underlying assumptions, and the relationships between process capability indices and product reliability. An actual case is presented to demonstrate this relationship.
Bharatwaj Ramakrishnan, Peter Sandborn, Michael Pecht   +2 more
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Bootstrap test for process capability indices

International Journal of Quality & Reliability Management, 2017
Purpose The purpose of this paper is to construct a statistical hypotheses test for process capability indices and compare the pairs of them with a fixed sample size. Design/methodology/approach Since the sampling distribution of the estimators of pairs of two process capability indices (PCIs) is very complex, an exact statistical hypothesis test ...
Bahram Sadeghpour Gildeh, Sedigheh Rahimpour, Fatemeh Ghanbarpour Gravi   +2 more
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Process capability indices

The thesis is introduced and studied the initially capability indices and their youngest indices which appeared for the improvement of capability indices. The majority of the work refers to one-dimensional characteristics of normal distribution, but there is an important reference in multi-dimensional of normal data. In the first chapter we will define
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Process capability indices for skewed populations

Quality and Reliability Engineering International, 2002
AbstractThis paper proposes a new method of constructing process capability indices (PCIs) for skewed populations. It is based on a weighted standard deviation method which decomposes the standard deviation of a quality characteristic into upper and lower deviations and adjusts the value of the PCI using decomposed deviations in accordance with the ...
Y.S. Chang, I.S. Choi, D.S. Bai Bai, Do Sun   +2 more
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Basic Process Capability Indices: An Expository Review

International Statistical Review, 2008
Summary A review of the four basic process capability indices has been made. The interrelationship among these indices has been highlighted. Attention has been drawn to their drawbacks. The relation of these indices to the proportion nonconforming has been dwelt upon and the requirement of the adequate sample size has been emphasized.
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