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Dissertations / Theses on the topic 'Statiscal quality control'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Bonato, Rodrigo Giacomini. "Qualidade operacional da fenação: análise do processo de produção." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11148/tde-19112004-133218/.

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O Brasil possui atualmente o maior rebanho comercial bovino do mundo com aproximadamente 185 milhões de cabeças, configurando-se em uma atividade de significativa participação na formação do PIB agropecuário nacional. Entretanto, uma das dificuldades enfrentadas é a sazonalidade das forrageiras, pois a produção da pastagem concentra-se na época quente e chuvosa do ano. A fenação é uma das alternativas na conservação de forragens e sua qualidade depende, entre outros fatores, do processo de colheita, onde eficiência e agilidade são proporcionadas pela mecanização. O momento econômico at

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2

Arif, Osama Hasan. "Statistical process control by quantile approach." Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/19285/.

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Most quality control and quality improvement procedures involve making assumptions about the distributional form of data it uses; usually that the data is normally distributed. It is common place to find processes that generate data which is non-normally distributed, e.g. Weibull, logistic or mixture data is increasingly encountered. Any method that seeks to avoid the use of transformation for non-normal data requires techniques for identification of the appropriate distributions. In cases where the appropriate distributions are known it is often intractable to implement. This research is conc

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3

Cassady, Charles Richard. "Statistical quality control techniques using multilevel discrete product quality measures." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151120/.

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4

Thoutou, Sayi Mbani. "Quality control charts under random fuzzy measurements." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/19140.

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Includes bibliographical references. .<br>We consider statistical process control charts as tools that statistical process control utilizes for monitoring changes; identifying process variations and their causes in industrial processes (manufacturing processes) and which help manufacturers to take the appropriate action, rectify problems or improve manufacturing processes so as to produce good quality products. As an essential tool, researchers have always paid attention to the development of process control charts. Also, the sample sizes required for establishing control charts are often unde

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5

Barr, Tina Jordan. "Performance of quality control procedures when monitoring correlated processes." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/25497.

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6

Khalidi, Mohammad Said Asem Weheba Gamal S. "Multivariate quality control statistical performance and economic feasibility /." Diss., A link to full text of this thesis in SOAR, 2007. http://soar.wichita.edu/dspace/handle/10057/1077.

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Thesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering.<br>"May 2007." Title from PDF title page (viewed on October 25, 2007). Thesis adviser: Gamal S. Weheba. Includes bibliographic references (leaves 96-101).

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7

Leoni, Roberto Campos [UNESP]. "Estudo do desempenho dos gráficos de controle quando a média do processo oscila de acordo com o modelo AR(1)." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/93086.

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Made available in DSpace on 2014-06-11T19:26:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-06-15Bitstream added on 2014-06-13T20:15:05Z : No. of bitstreams: 1 leoni_rc_me_guara.pdf: 1800797 bytes, checksum: 8d64168d2cc2cc40045086a8c4677b9f (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>No planejamento dos gráficos de controle destinados ao monitoramento da média do processo, assume-se que esta permanece fixa em seu valor alvo até a ocorrência de uma causa especial, que a desloca. Em muitos processos, contudo, é mais razoável supor que a média osci

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8

Ghebretensae, Manna Zerai. "A unified approach to the economic aspects of statistical quality control and improvement." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49865.

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Assignment (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: The design of control charts refers to the selection of the parameters implied, including the sample size n, control limit width parameter k, and the sampling interval h. The design of the X -control chart that is based on economic as well as statistical considerations is presently one of the more popular subjects of research. Two assumptions are considered in the development and use of the economic or economic statistical models. These assumptions are potentially critical. It is assumed that the time between process s

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9

Ten, Caten Carla Schwengber. "Controle integrado da qualidade de processos de manufatura de revestimentos cerâmicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1999. http://hdl.handle.net/10183/170721.

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Essa tese versa sobre um procedimento inovador para o controle e garantia da qualidade em processos de manufatura onde existem vários atributos e variáveis a serem monitorados, como acontece, por exemplo, na indústria cerâmica. O procedimento proposto, chamado de controle integrado da qualidade, começa com a definição de alguns postos de controle na linha de produção, onde o monitoramento será feito usando uma única carta de controle que agrega vários atributos e variáveis. Esse procedimento é complementado usando gráficos de Pareto, que hierarquizam as características de qualidade que contrib

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10

Guitton, Philippe. "Une méthode de contrôle statistique de la qualité en fabrication continue : Icare (fondements théoriques et mise en oeuvre)." Rouen, 1987. http://www.theses.fr/1987ROUES040.

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Le système Icare, qui prend effet sur une fabrication en cours, dans laquelle sauf cas de dysfonctionnement, les probabilités d'apparition de défauts sont faibles, est de type évolutif; c'est-à-dire que la vérité du contrôle dépend, du nombre de défectueux récemment observés (dans la version Icare avec défectueux) ou du démérite récemment observé qui est fonction des défauts et familles de défauts rencontrés (dans la version Icare avec défauts). Le rythme des tirages des échantillons est caractérisé par les convoluées de lois uniformes sur un même support. Les principaux résultats théoriques c

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11

Nadeem, Mohammed. "A statistical quality control support system to facilitate acceptance sampling and control chart procedures." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1178137590.

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12

Ritchie, Paul Andrew 1960. "A systematic, experimental methodology for design optimization." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276698.

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Much attention has been directed at off-line quality control techniques in recent literature. This study is a refinement of and an enhancement to one technique, the Taguchi Method, for determining the optimum setting of design parameters in a product or process. In place of the signal-to-noise ratio, the mean square error (MSE) for each quality characteristic of interest is used. Polynomial models describing mean response and variance are fit to the observed data using statistical methods. The settings for the design parameters are determined by minimizing a statistical model. The model uses a

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13

Jamnarnwej, Panisuan. "Methods for detection of small process shifts." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/24518.

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14

Weiss, Christian H. "Categorical time series analysis and applications in statistical quality control." Berlin dissertation.de, 2009. http://d-nb.info/995083134/04.

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15

Vidal, Puig Santiago. "FAULT DIAGNOSIS TOOLS IN MULTIVARIATE STATISTICAL PROCESS AND QUALITY CONTROL." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/61292.

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[EN] An accurate fault diagnosis of both, faults sensors and real process faults have become more and more important for process monitoring (minimize downtime, increase safety of plant operation and reduce the manufacturing cost). Quick and correct fault diagnosis is required in order to put back on track our processes or products before safety or quality can be compromised. In the study and comparison of the fault diagnosis methodologies, this thesis distinguishes between two different scenarios, methods for multivariate statistical quality control (MSQC) and methods for latent-based multivar

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16

Cuéllar, Fuentes Jesús Seaman John W. Tubbs Jack Dale. "Statistical monitoring of a process with autocorrlated output and observable autocorrelated measurement error." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5185.

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17

Human, S. W. "Univariate parametric and nonparametric statistical quality control techniques with estimated process parameters." Pretoria : [s.l.], 2009. http://upetd.up.ac.za/thesis/available/etd-10172009-093912.

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18

Murphy, Terrence Edward. "Multivariate Quality Control Using Loss-Scaled Principal Components." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-11222004-122326/unrestricted/murphy%5Fterrence%5Fe%5F200412%5Fphd.pdf.

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Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2005.<br>Victoria Chen, Committee Co-Chair ; Kwok Tsui, Committee Chair ; Janet Allen, Committee Member ; David Goldsman, Committee Member ; Roshan Vengazhiyil, Committee Member. Vita. Includes bibliographical references.

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19

Leoni, Roberto Campos. "Estudo do desempenho dos gráficos de controle quando a média do processo oscila de acordo com o modelo AR(1) /." Guaratinguetá : [s.n.], 2011. http://hdl.handle.net/11449/93086.

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Resumo: No planejamento dos gráficos de controle destinados ao monitoramento da média do processo, assume-se que esta permanece fixa em seu valor alvo até a ocorrência de uma causa especial, que a desloca. Em muitos processos, contudo, é mais razoável supor que a média oscila mesmo na ausência de causas especiais. Para descrever este comportamento oscilatório, tem-se utilizado o modelo autoregressivo de 1ª ordem, AR (1). Quando esta oscilação é grande, o melhor desempenho do gráfico de X é obtido com amostras unitárias. O mesmo não se observa com a carta de EWMA (exceto quando o parâmetro de p

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20

Girardi, Benur A. "Bulk sampling : some strategies for improving quality control in chemical industries." Thesis, City University London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359184.

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21

Harvey, Martha M. (Martha Mattern). "The Fixed v. Variable Sampling Interval Shewhart X-Bar Control Chart in the Presence of Positively Autocorrelated Data." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc278763/.

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This study uses simulation to examine differences between fixed sampling interval (FSI) and variable sampling interval (VSI) Shewhart X-bar control charts for processes that produce positively autocorrelated data. The influence of sample size (1 and 5), autocorrelation parameter, shift in process mean, and length of time between samples is investigated by comparing average time (ATS) and average number of samples (ANSS) to produce an out of control signal for FSI and VSI Shewhart X-bar charts. These comparisons are conducted in two ways: control chart limits pre-set at ±3σ_x / √n and limits co

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22

Oztemel, Ercan. "Integrating expert systems and neural networks for on-line statistical process control." Thesis, Cardiff University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307382.

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23

Jamil, Kabir. "A study of quality improvement tools and total quality management (TQM) frameworks for small and medium size manufacturing companies." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1176491309.

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24

Gremyr, Andreas. "Tracking Change : Usefulness of Statistical Process Control in Improving Psychiatric Care." Thesis, Hälsohögskolan, Högskolan i Jönköping, The Jönköping Academy for Improvement of Health and Welfare, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-30242.

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Healthcare is facing great challenges and psychiatric care is no exception. Extensive attempts to improve quality are made. It is essential to use methods that enable learning from experience, to improve performance. The core feature of Statistical Process Control (SPC), the control charts, are in use in various settings to enable learning and to support quality improvement work, but its use in psychiatric settings are scarce. This master´s thesis explores the usefulness of control charts, in quality improvement work. This was done in a case study at a department of psychosis by addressing two

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25

Carter, Lionel. "The development of a quality assurance methodology for small batch manufacture in an advanced manufacturing environment." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318423.

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26

Driesen, Kevin E. "Statistical process control as quantitative method to monitor and improve medical quality." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280602.

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Statistical Process Control (SPC) methods, developed in industrial settings, are increasingly being generalized to medical service environments. Of special interest is the control chart, a graphic and statistical procedure used to monitor and control variation. This dissertation evaluates the validity of the control chart model to improve medical quality. The research design combines descriptive and causal comparative (ex-post facto) methods to address the principal research question, How is the control chart model related to medical quality? Hospital data were used for patients diagnosed with

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Moberg, Pontus, and Filip Svensson. "Cost Optimisation through Statistical Quality Control : A case study on the plastic industry." Thesis, Blekinge Tekniska Högskola, Institutionen för industriell ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-21922.

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Background. Shewhart was the first to describe the possibilities that come with having a statistically robust process in 1924. Since his discovery, the importance of a robust process became more apparent and together with the consequences of an unstable process. A firm with a manufacturing process that is out of statistical control tends to waste money, increase risks, and provide an uncertain quality to its customers. The framework of Statistical Quality Control has been developed since its founding, and today it is a well-established tool used in several industries with successful results. W

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Grayson, James M. (James Morris). "Economic Statistical Design of Inverse Gaussian Distribution Control Charts." Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc332397/.

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Statistical quality control (SQC) is one technique companies are using in the development of a Total Quality Management (TQM) culture. Shewhart control charts, a widely used SQC tool, rely on an underlying normal distribution of the data. Often data are skewed. The inverse Gaussian distribution is a probability distribution that is wellsuited to handling skewed data. This analysis develops models and a set of tools usable by practitioners for the constrained economic statistical design of control charts for inverse Gaussian distribution process centrality and process dispersion. The use of thi

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Rohani, Jafri Mohd. "The development and analysis of quality control adjustment schemes for process regulation." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1179951651.

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30

Cao, Min. "Models for delivery and price equilibrium and statistical quality control in supply chains." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B3816579X.

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Cao, Min, and 曹敏. "Models for delivery and price equilibrium and statistical quality control in supply chains." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38576090.

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32

Elhabashy, Ahmed Essam. "Quality Control Tools for Cyber-Physical Security of Production Systems." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/86725.

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With recent advancements in computer and network technologies, cyber-physical systems have become more susceptible to cyber-attacks; and production systems are no exception. Unlike traditional Information Technology (IT) systems, cyber-physical systems are not limited to attacks aimed at Intellectual Property (IP) theft, but also include attacks that maliciously affect the physical world. In manufacturing, such cyber-physical attacks can destroy equipment, force dimensional product changes, alter a product's mechanical characteristics, or endanger human lives. The manufacturing industry often

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33

Srinivasan, Asvin. "Application of information technology and statistical process control in pharmaceutical quality assurance & compliance." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66047.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Global Operations Program at MIT, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 65-66).<br>Recently, the FDA issued new quality guidelines (Q10) encouraging drug manufacturers to improve their quality monitoring procedures. This renewed focus on quality and risk management has prompted Novartis to re-evaluate their systems and p

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Ghasemzadeh-Barvarz, Massoud. "Quality control of complex polymer materials using hyperspectral imaging associated with multivariate statistical analysis." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26025.

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Dans la première étape de ce travail, des composites formulés à partir d'anhydride maléique greffé polyéthylène (MAPE) et de différentes charges de fibres de chanvre (entre 0 et 60%) ont été produits et analysés par imagerie NIR. Trois méthodes chimiométriques ont été utilisées puis comparées pour la prédiction des propriétés mécaniques, cartographier la distribution des constituants et détecter les défauts physiques des matériaux: la calibration multivariée traditionnelle basée sur la régression PLS, la résolution multivariée de courbes (MCR) et l’analyse d’images et la régression sur les ima

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Sabet, Azad Payam, and Reza Mokhlesi. "Statistical Quality Control in Cable Industry Case Study : Copper Consumption Reduction in Nexans IKO Sweden." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19587.

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This thesis was carried out at the Special Cables group in the Nexans IKO Sweden AB in Grimsås, The company is a worldwide leader in the cable industry, offers an extensive range of cables and cabling systems.The aim with this thesis is to increase mean average of the electrical resistance in cables and accordingly saving the copper as the raw material. In order to achieve such significance the project offers an approach to find and eliminate causes of variation in a manufacturing process.In the beginning, some germane literature for the area was studied to get a deeper understanding of the pr

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Noronha, Rossano Santos. "Projeto Econômico da Carta de Controle X : um modelo com custos dependentes dos desvios." Universidade do Vale do Rio dos Sinos, 2017. http://www.repositorio.jesuita.org.br/handle/UNISINOS/6276.

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Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2017-05-22T13:46:14Z No. of bitstreams: 1 Rossano Santos Noronha_.pdf: 585085 bytes, checksum: 88117b318c3e9c30134fce5bf0bdc22e (MD5)<br>Made available in DSpace on 2017-05-22T13:46:14Z (GMT). No. of bitstreams: 1 Rossano Santos Noronha_.pdf: 585085 bytes, checksum: 88117b318c3e9c30134fce5bf0bdc22e (MD5) Previous issue date: 2017-03-07<br>CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Devido à dificuldade em se estimar os custos de operação associados ao monitoramento estatístico do processo nos trabalhos iden

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Hessler, Carlos Vilibaldo. "Aplicação de controle estatístico de processo na empresa Metasa como uma ferramenta de competitividade." reponame:Repositório Institucional da UCS, 2008. https://repositorio.ucs.br/handle/11338/302.

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Nos últimos anos diversas áreas do setor produtivo vêm experimentando acelerados avanços tecnológicos e, desta forma, exigindo ferramentas cada vez mais específicas para monitorar e avaliar estes processos. Melhorias significativas nos processos de medições das características de qualidade têm sido observadas. Em relação ao controle de processo, em 1924, Walter Shewhart desenvolveu o conceito estatístico das cartas de controle para processos cujos dados sejam independentes e normalmente distribuídos, suposição esta que deve ser atendida para a construção das cartas de controle. Este artigo tem

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Araujo, Tatiana. "Redução das perdas no processo produtivo de uma fábrica de fraldas descartáveis através da implantação do controle estatístico do processo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/142248.

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Esta dissertação aborda a redução das perdas de qualidade em um processo de fabricação de fraldas descartáveis, através da implantação da ferramenta de Controle Estatístico de Processo (CEP), que tem por objetivo analisar e monitorar as principais variáveis e características de qualidade que influenciam no processo produtivo. Depois de implantada a ferramenta do CEP, são propostos alguns indicadores de desempenho para a área de produção da empresa que servirão de base para medir e acompanhar o desempenho de alguns processos, importantes para se atingir e acompanhar as metas de melhoria de qual

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Harvey, Robert Richard. "Statistical regression models and control charts for the real time water quality network in Newfoundland/." Internet access available to MUN users only. Search for this title in:, 2009.

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O'Neil, Andrew James. "Multivariate statistical quality control of a pharmaceutical manufacturing process using near infrared spectroscopy and imaging microscopy." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341802.

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Ferri, Santi. "Critérios de aceitação e controle da qualidade da execução de camadas de fundação de pavimentos novos através de métodos deflectométricos." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-29072013-121302/.

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As obras de infraestrutura rodoviária representam investimentos públicos que influenciam de maneira determinante no desenvolvimento social e econômico de uma região. Pavimentos mal construídos, com controle de qualidade inadequado ou que não atendam às exigências de projeto em termos de características e espessuras dos materiais selecionados representam prejuízos sociais e econômicos na medida em que a deterioração precoce do pavimento implica em aumentos crescentes nos custos diretos e indiretos relacionados à conservação e operação rodoviária. Desta maneira, torna-se imprescindível que sejam

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Dai, Chengxin. "Exploring Data Quality of Weigh-In-Motion Systems." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1018.

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This research focuses on the data quality control methods for evaluating the performance of Weigh-In-Motion (WIM) systems on Oregon highways. This research identifies and develops a new methodology and algorithm to explore the accuracy of each station's weight and spacing data at a corridor level, and further implements the Statistical Process Control (SPC) method, finite mixture model, axle spacing error rating method, and data flag method in published research to examine the soundness of WIM systems. This research employs the historical WIM data to analyze sensor health and compares the eval

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Wells, Lee Jay. "Advancing Manufacturing Quality Control Capabilities Through The Use Of In-Line High-Density Dimensional Data." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/24865.

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Through recent advancements in high-density dimensional (HDD) measurement technologies, such as 3D laser scanners, data-sets consisting of an almost complete representation of a manufactured part's geometry can now be obtained. While HDD data measurement devices have traditionally been used in reverse engineering application, they are beginning to be applied as in-line measurement devices. Unfortunately, appropriate quality control (QC) techniques have yet to be developed to take full advantage of this new data-rich environment and for the most part rely on extracting discrete key product char

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Chou, Shih-Hsiung. "Quality engineering applications on single and multiple nonlinear profiles." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/17214.

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Doctor of Philosophy<br>Department of Industrial and Manufacturing Systems Engineering<br>Shing I. Chang<br>Profile analysis has drawn attention in quality engineering applications due to the growing use of sensors and information technologies. Unlike the conventional quality characteristics of interest, a profile is formed functionally dependent on one or more explanatory variables. A single profile may contain hundred or thousand data points. The conventional charting tools cannot handle such high dimensional datasets. In this dissertation, six unsolved issues are investigated. First, Chang

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Sandholm, Thomas. "Statistical Methods for Computational Markets : Proportional Share Market Prediction and Admission Control." Doctoral thesis, KTH, Data- och systemvetenskap, DSV, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4738.

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We design, implement and evaluate statistical methods for managing uncertainty when consuming and provisioning resources in a federated computational market. To enable efficient allocation of resources in this environment, providers need to know consumers' risk preferences, and the expected future demand. The guarantee levels to offer thus depend on techniques to forecast future usage and to accurately capture and model uncertainties. Our main contribution in this thesis is threefold; first, we evaluate a set of techniques to forecast demand in computational markets; second, we design a scalab

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Devaux, Marie-Françoise. "Interpretation de spectres de reflexion dans l'infrarouge proche et moyen de produits agroalimentaires par des methodes d'analyse multidimensionnelle." Nantes, 1988. http://www.theses.fr/1988NANT2022.

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Dans cette etude sont montrees les potentialites de l'analyse en composantes principales (acp) et de l'analyse factorielle discriminante (afd) pour l'interpretation des spectres de reflexion proche et moyen infrarouges. L'acp realise un modele spectral: elle decompose les spectres en une somme de profils spectraux caracteristiques. Une nouvelle methode, l'acp sous contraintes d'orthogonalite (acpco) est introduite. L'acpco est une acp dans laquelle certains profils sont imposes. Les proprietes de l'afd appliquees aux variables issues de l'acp sont mises en evidence, permettant ainsi le calcul

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Pehlivan, Canan. "Controlling High Quality Manufacturing Processes: A Robustness Study Of The Lower-sided Tbe Ewma Procedure." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609937/index.pdf.

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In quality control applications, Time-Between-Events (TBE) type observations may be monitored by using Exponentially Weighted Moving Average (EWMA) control charts. A widely accepted model for the TBE processes is the exponential distribution, and hence TBE EWMA charts are designed under this assumption. Nevertheless, practical applications do not always conform to the theory and it is common that the observations do not fit the exponential model. Therefore, control charts that are robust to departures from the assumed distribution are desirable in practice. In this thesis, robustness of the lo

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Minardi, Michael. "Comparing process capability : a c pk ratio approach." Honors in the Major Thesis, University of Central Florida, 2001. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/288.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Arts and Sciences<br>Statistics

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Torminato, Silvio Miotta. "Analise da utilização da ferramenta CEP = um estudo de caso na manufatura de autopeças." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264246.

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Orientador: Olivio Novaski<br>Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-04T01:56:53Z (GMT). No. of bitstreams: 1 Torminato_SilvioMiotta_M.pdf: 1152419 bytes, checksum: debbdb5f6049f964ea57e8615499d2b1 (MD5) Previous issue date: 2004<br>Resumo: O objetivo principal desta dissertação é apresentar uma aplicação da ferramenta CEP, quando essa aplicação se desenvolve em um ambiente onde a preocupação maior é focada na qualidade, deslocando o conceito de volume de controle para a especificidade d

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Zhang, Xi. "Physical and statistical analysis of functional process variables for process control in semiconductor manufacturing." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003176.

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