نتایج جستجو برای: multivariate process capability indices

تعداد نتایج: 1563574  

Journal: :Mathematics 2022

The measurement of the process capability is a key part quantitative quality control, and indices are statistical measures capability. Six Sigma level represents maximum achievable capability, many enterprises have implemented improvement strategies. In recent years, studies investigated indices, including Qpk. However, Qpk contains two unknown parameters, namely δ γ, which difficult to use in ...

2010
Dražen Slišković Ratko Grbić Željko Hocenski

Process safety and environment pollution demands are continuously increasing in the process industry. Apart from that, requirements regarding final product quality and production efficiency are higher and higher [1]. This can be achieved by applying advanced process monitoring and control techniques. Process control is heavily dependent on the quality of the data, so it is crucial to measure as...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2020

Journal: :European Journal of Operational Research 2002
Charles J. Corbett Jeh-Nan Pan

This paper builds on recent work on measuring and evaluating environmental performance of a process using statistical process control (SPC) techniques. We propose the CUSUM chart as a tool to monitor emissions data so that abnormal changes can be detected in a timely manner, and we propose using process capability indices to evaluate environmental performance in terms of the risk of non-complia...

2014
Mohsen Mohamadi Mehdi Foumani Babak Abbasi

The classical method of process capability analysis necessarily assumes that collected data are independent; nonetheless, some processes such as biological and chemical processes are autocorrelated and violate the independency assumption. Many processes exhibit a certain degree of correlation and can be treated by autoregressive models, among which the autoregressive model of order one (AR (1))...

2014
C. Pfeiffer B. Fuerst-Waltl V. Ducrocq

To optimize the subindex for functional longevity in Austrian Fleckvieh, an approximate multivariate approach was analyzed. Genetic parameters for functional longevity and five type traits were estimated multivariately based on yield deviations. Genetic parameters differed slightly from the ones used in the routine evaluation. Indices and reliabilities computed in a full multivariate approach w...

2011
Andreas Vlachidis Douglas Tudhope

The paper discusses the process of developing Semantic Annotations, a form of metadata for assigning conceptual entities to textual instances, in this case archaeological grey literature. The use of Information Extraction (IE), a Natural Language Processing (NLP) technique is central to the annotation process. The paper explores the use of Ontology Oriented Information Extraction (OOIE) methods...

Journal: :International Journal of Engineering, Science and Technology 2020

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