Statistical Quality Control Multivariate
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Mulch materials in processing tomato: a multivariate approach
Mulch materials of different origins have been introduced into the agricultural sector in recent years alternatively to the standard polyethylene due to its environmental impact. This study aimed to evaluate the multivariate response of mulch materials over three consecutive years in a processing tomato (Solanum lycopersicon L.) crop in Central Spain. Two bi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-08
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2. Characterization of produced water in the oil industry for disposal and optimization of oil water separation. / Caracterização de água produzida na indústria de petróleo para fins de descarte e otimização do processo de separação óleo/água
The oil industry has several segments that can impact the environment. Among these, produced water which has been highlight in the environmental problem because of the great volume generated and its toxic composition. Those waters are the major source of waste in the oil industry. The composition of the produced water is strongly dependent on the production
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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3. MONITORAMENTO DO CONTROLE ESTATÍSTICO DO PROCESSO UTILIZANDO FERRAMENTAS ESTATÍSTICAS / MONITORING OF STATISTICAL PROCESS CONTROL USING STATISTICAL TOOLS
This study used the data from a tobacco company that monitors its production process through statistical process control. The objective of this study was to apply multivariate statistical tools of Statistical Process Control to monitor the efficiency of the production process of the company under study. This production process consists of four variables moni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011
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4. Modelagem nebulosa evolutiva: novas topologias e algoritmos de aprendizagem
This works aims to introduce new evolving fuzzy topologies and learning algorithms. Evolving fuzzy systems are defined as new class of intelligent fuzzy systems, with a high flexibility and autonomy. These systems are able to address problems like nonlinear system identification, control and pattern classification in a dynamic changing environment, adapting
Publicado em: 2011
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5. Voice disorders related to teaching: a case-control study / Distúrbio de voz relacionado ao trabalho docente: um estudo caso-controle
Introduction Teachers constitute a professional category with high occurrence of voice disorders due to this occupations intense vocal demand and to unfavorable work environments. The presence of voice disorder may jeopardize their careers because these professionals depend essentially on their voices to work. Aim To identify the association between voice di
Publicado em: 2010
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6. MÉTODOS ESTATÍSTICOS APLICADOS À AVALIAÇÃO DA QUALIDADE DA MATÉRIA-PRIMA E CLASSIFICAÇÃO DOS FORNECEDORES DE UMA INDÚSTRIA DE LATICÍNIOS / STATISTICAL METHODS APPLIED TO THE QUALITY ASSESSMENT OF RAW MATERIALS AND CLASSIFICATION OF SUPPLIERS OF A DAIRY INDUSTRY
The aim of this study was to evaluate the quality of raw materials delivered by suppliers of a dairy industry based on physicochemical specifications. The development of the work consisted of literature research, followed by a case-study with descriptive approach involving variables of quantitative nature. In order to develop the analysis of data, the follow
Publicado em: 2009
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7. MODELOS DE PREVISÃO APLICADOS AO CONTROLE DE QUALIDADE COM DADOS AUTOCORRELACIONADOS / FORECAST MODEL APPLIED TO QUALITY CONTROL WITH AUTOCORRELATIONAL DATA
This research has a topic forecast models applied to industrial productive processes with the objective of verifying the stability of the process through control charts applied to the residues originated from linear and non-linear model. In the presence of autocorrelation data, it was necessary to look for a mathematical model which are produce independent a
Publicado em: 2009
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8. Aplicação de quimioterapia e espectroscopia no infravermelho no controle de qualidade de biodiesel e mistura biodiesel/diesel / Application of chemometrics and infrared spectroscopy in the quality control of biodiesel and biodiesel blend
Multivariate control charts in jointly with near infrared spectroscopy were developed to verify the quality of biodiesel blends (2% of biodiesel and 98% of diesel). The control charts were built using the net analyte signal, generating three charts: the NAS chart that corresponds to the analyte of interest (biodiesel in this case), the interference chart tha
Publicado em: 2008
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9. Avaliação da qualidade do Rio São Lourenço, SP, sob influência de estações de tratamento de água e estações de tratamento de esgoto / ENVIRONMENTAL QUALITY IN AREA OF INFLUENCE OF MUD OF STATIONS FOR TREATMENT OF WATER AND SEWAGE
For a long time, there was a neglect to water resources, both by society as by the authorities. The rapid increase of population, causing disorderly occupations, was ignored by the public sectors and the society itself, resulting in environmental degradation. Ecotoxicological tests are essential to environmental assessment, together with chemical and biologi
Publicado em: 2008
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10. Impacto de uma intervenção comunicativa na capacidade funcional de idosos hospitalizados / Impact of a communication intervention on the functional capacity of hospitalized elderly people.
INTRODUCTION: Population aging is a problem for the health sector. Due to its characteristics, hospitalization processes are more frequent, consequently favoring the presence of temporary or permanent disabilities in the elderly, a fact that is not prioritized in hospitalized patients and that demands solution strategies with a view to a better quality of li
Publicado em: 2008
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11. Estudo comparativo da aplicaÃÃo de vinhaÃa tratada e in natura em solos sob cultivo de cana-de-aÃÃcar
Brazil is the world leader in sugarcane plantation. Its economical exploration generates residues, standing out the vinasse. Due to the problems of ecological and social order caused by the vinasse, the most plausible solution for its disposition is the application to the soil as fertilizer. However, that application requests studies to guide the management
Publicado em: 2008
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12. Utilização do sinal analitico liquido para avaliação de modelos de calibração multivariada atraves do calculo de figuras de merito e de cartas de controle / Utilization of net analyte signal for validation of models of multivariate calibration by using figure of merit and chart control
This study was mainly intended to elaborate the validation of multivariate calibration models based on the determination of figures of merit and multivariate control charts constructed with data from Nimesulide tablets upon near-infrared spectroscopy use. A total of 69 synthetic samples were prepared containing the active principle (Nimesulide) in the range
Publicado em: 2007