Made available in DSpace on 2014-06-11T19:26:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-07-23Bitstream added on 2014-06-13T20:07:34Z : No. of bitstreams: 1 canizella_r_me_bauru.pdf: 668494 bytes, checksum: ab160da0c27972ddf4f1aa98cece12c9 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / As atividades de uma indústria com o sistema de produção contínua possuem características próprias dependendo do processo a que se dispõe a transformar uma matéria-prima, por isso este trabalho trata de analisar as perdas na produção contínua de extração de óleo de soja por solvente, apresentando a descrição do processo e as principais indicadores de desempenho, propondo sugetões de monitoramento para melhoria dos resultados. Essa abordagem é feita comparando-se resultados propiciados por alguns autores da área com dados da área com dados levantados de uma empresa no Brasil em dois períodos distintos, incluindo análise de evolução da planta, onde a alta gerência monitora a produtividade e a qualidade dos produtos, e trata as perdas no ambiente de transformação como consumo de solvente utilizado para extração do óleo de soja e consumo de combustível para a geração de energia térmica. Conclui-se que a indústria de extração de óleo vegetal, possui diversas variáveis de controle pelo conjunto de operações necessárias à transformação, ressaltando neste caso a perda de energia térmica como prioridade de atitudes de melhorias. Dado que a tendência de aumento da capacidade de processamento de soja é evidente, pela perspectiva de crescimento da produção de soja no Brasil, deve ser considerado neste contexto, o investimento em conhecimento para as pessoas exercerem as atividades operacionais em perfeita sincronia com as informações que ocorrem no processo, garantindo o objetivo da organização de minimização das perdas, e consequente aumento do lucro e crescimento / The activities of the industry with a continuous production system have their own characteristics depending on the process that is willing to turn a raw material, so this work is to analyzed the losses in the continuous production of soybean oil extraction solvent, presenting the description of the process and key performance indicators and propose suggestions for the improvement of monitoring results. This approach is made comparing the results obtained by some authors in the field with data collected from a company in Brazil in two distinct periods, including examination of the plant, where top management monitors productivity and product quality, and treats losses the environment of use as processing solvent used to extract the soybean oil and fuel to generate heat energy. It is concluded that the industry of oil extraction plant has several control variables the operations required for processing, emphasizing in this case the loss of thermal energy as priority actions for improvements. Since the trend of increased processing capacity of soybean is evident from the perspective of growth of soybean production in Brazil, should be considered in this context, investment in knowledge for people to exercise operational activities in perfect synchrony with the information occur in the process, ensuring the organization's goal of minimizind losses, and consequent increase in profit and growth

Made available in DSpace on 2014-06-11T19:28:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-12-20Bitstream added on 2014-06-13T19:16:08Z : No. of bitstreams: 1 euzebio_csg_me_bauru.pdf: 3031848 bytes, checksum: 6b7741a092864eabaa133ffdbcd4eed8 (MD5) / A necessidade de reduções de custos aliada ao aumento de qualidade das peças produzidas requer a implementação de sistemas inteligentes em ambientes industriais. O controle dos danos causados no processo de retificação é de interesse direto da indústria dependente desse processo. O objetivo deste trabalho é a proposição de modelos fuzzy empregados na detecção da queima de peças de aço SAE 1020 no processo de retificação plana. Foram realizados doze testes para diferentes condições de usinagem. Para cada teste foram coletados dados referentes a potência elétrica e emissão acústica (sinal puro). Os níveis de queima das peças foram analisados visualmente e com o auxílio computacional. A partir dos sinais de emissão acústica, potência de corte e parâmetros utilizando esses dois sinais, regras linguísticas foram estabelecidas para as diversas situações de queima (leve, média, severa) com a aplicação da lógica nebulosa utilizando-se o Toolbox do MATLAB. Quatro modelos práticos de sistema fuzzy foram desenvolvidos. O primeiro modelo com duas entradas apenas resultam num processo de simples análise. O segundo modelo possui a entrada adicional da estatística do desvio do valor médio (MVD), associando uma nova informação e precisão. Esse modelo é baseado em um sistema de inferência de três entradas, combinados dois a dois. O terceiro modelo, com 64 regras, baseia-se nas mesmas três entradas utilizadas no segundo modelo, combinadas três a três. Esses dois modelos diferem entre si pela base de regras desenvolvidas. O quarto modelo difere do terceiro devido ao número de regras e a entrada adicional baseada na potência de corte, do desvio padrão da mesma e do sinal RMS de emissão acústica. Apresentando respostas válidas, os quatro modelos desenvolvidos mostraram eficiência, precisão, confiabilidade e... / The need of costs reduction and quality increase of the produced pieces requires the implementation of intelligent systems in industrial environments. The control of damages caused during the grinding process is interesting to the industry that depends on such process. This work uses fuzzy logic as tool to classify and estimate burn levels in the grinding process in order to help controlling such process. Twelve tests were performed for different grinding conditions. For each test, data were concerning electrical power and acoustic emission (raw signal). The levels of burning parts were analyzed visually and with computer assistance. Based on acoustic emission signals, cutting power, and statistics using these two signals, liguistic rules were established for the various burn situations (slight, intermediate, sever) by applying fuzzy logic using the MATLAB toolbox. Four practical fuzzy system models were developed. This first model with two inputs resulted only in a simple analysis process. The second model has an additional MVD statistic input, associating information and precision. This model is base d on an inference system of three inputs, combined two by two. The third model with 64 rules is based on the same three inputs used in the second model, differ by the rule base developed. The forth model is different from the third one due to the number of rules, the additional input based on the cutting power, the standard deviation and the acoustic emission RMS signal. The four developed models presented valid responses, proving effective, accurate, reliable and easy to use for the determination of ground workpiece burn. In this analysis... (Complete abstract click electronic access below)

Orientador: Eugenio Jose Zoqui / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica / Made available in DSpace on 2018-08-04T09:17:37Z (GMT). No. of bitstreams: 1 Cortada_AntonioCelsoHunnicutt_M.pdf: 11709001 bytes, checksum: be6078b76bb41d2afb96574cc5ce047c (MD5) Previous issue date: 2005 / Resumo: O objetivo deste trabalho é utilizar o Método de Análise e Solução de Problemas, MASP, como veículo de implementação de um programa de qualidade total e avaliar seu impacto em uma empresa do setor de embalagem. O método empregado é o da pesquisa-ação. Para tanto, analisa-se uma empresa, na qual o sistema de gestão da qualidade é estruturado e introduzido. Com isso, pretende-se demonstrar de forma sintética uma outra abordagem de implementação do Controle de Qualidade Total, que pode trazer benefícios para a organização desde as etapas iniciais. Para corroborar com esta idéia, além de demonstrar como o método foi empregado na empresa, três estudos de caso são apresentados detalhadamente. Posteriormente, analisam-se como os projetos de melhoria contribuíram para a institucionalização da qualidade total na organização. Concluindo, este trabalho pretende comprovar a hipótese de que o MASP pode ser utilizado para iniciar o movimento da qualidade e auxiliar na implementação do TQC / Abstract: The main goal of this study is to use the QC Story method of problem solving and analysis as a vehicle for the implementation of a total quality program and evaluate its impacts in a company from the packaging sector. The method that was used employs a research in an industry where the quality management system was structured and introduced. This work intents to briefly demonstrate the advantages that the use of this alternative approach may provide, even in its early phases. To emphasize this idea and also to demonstrate how the method was used in the industry being researched, three detailed case studies are presented. After that, it is analyzed how these improvement projects have influenced the institutionalization of the total quality control concepts in the company. At last, this study intents to verify the hypothesis that the QC Story method can be used to start the quality movement and help the TQC implementation / Mestrado / Materiais e Processos de Fabricação / Mestre em Engenharia Mecânica

Submitted in fulfillment of the requirements for Degree of Master of Management Sciences: Human Resource Management, Durban University of Technology, Durban, South Africa, 2017. / The study presented in this thesis is centred around three research questions: (1) How have labour standards changed in South Africa over time? (2) What is the relationship between labour standards and performance? (3) What is the causal direction of the relationship between labour standards and performance? In addition to these questions the study tests the hypothesis that there is a relationship between retail performance and labour costs. To address the research questions and to test the hypothesis the study empirically examines South African labour productivity and labour costs data covering the years 1970-2014. The study utilises 184 data points pulled from 1967 to 2014. Analysis is done using the linear regression method (OLS), Ordinary Least Squares and error correction time series model. The study highlights the connectedness between productivity, performance and labour standards within the South African context. Productivity is used through-out the document as a proxy for performance. The findings show that labour costs drive (performance) in the retail sector. The study also showed that there is statistically significant and positive relationship between labour standards and performance. The policy implications of this study is prioritisation of incentives that are tied to labour standards that motivate employees in the retail sector. / M

Submitted in fulfillment of the requirements for the Degree of Master of Management Sciences: Business Administration, Durban University of Technology, Durban, South Africa, 2016. / Small, medium and micro enterprises (SMMEs) play a pivotal role in the economy of a country through job creation, development and dealing with the issue of unemployment, all of which affect the government and its citizens. Therefore, it is important that SMMEs operate efficiently and run their businesses effectively in order to grow within their respective sectors. The low rate of success amongst SMMEs in South Africa (SA) over the years indicates that there are factors hindering the efforts of the country’s SMMEs from operating efficiently (Turton and Herrington 2012: 48). One of the factors is poor operational performance which is frequently quoted as a leading cause of failure amongst SMMEs within the manufacturing sector (Urban and Naidoo 2012: 146). Furthermore, the Economic Development and Growth in eThekwini (EDGE) (2013: 37-38) reveals that SMMEs within the textile and clothing manufacturing sector in the eThekwini district generally do not innovate and suffer from a lack of access to financial services. The study population was 94 small and micro enterprises (SMEs) in the textile and clothing manufacturing sector in the eThekwini district. The researcher could not find a data on medium enterprises as prospective participants in the study and obtained only 80 SMEs. A quantitative approach was used in the context of a census study. The study was descriptive and conclusive in nature. The results of the study indicate that SMEs apply innovative processes in their businesses and work at a favourable physical environment within eThekwini district. However, SMEs do not have sufficient access to government financial incentive schemes (GFIS) which could be a factor inhibiting their growth and development. Furthermore, despite the fact that many of the SMEs in the study agreed that assistance from government schemes can enhance their operational performance, almost half of them were not aware of relevant schemes. Therefore, it is important that the government, that is, the Department of Trade and Industry (dti) and Small Enterprise Development Agency (seda) and other relevant government agencies, reach out to as many of these SMEs as possible. This is an opportunity for the SA government to improve their efforts to create more jobs for SA citizens. / M

No description available.

Orientador: Jorge Muniz Junior / Coorientador: Cristian Andres Menares Benito / Banca: Roberto Marx / Banca: Valério Antonio Pamplona Salomon / Resumo: Empresas decidem aumentar seu portfólio de produtos como um caminho para melhorar competitividade, ampliar vendas, atingir novos segmentos de mercado e, com isso, lidam com problemas referentes à produção com maior variedade e volume. A análise da literatura recente evidencia oportunidades de pesquisa no melhor entendimento sobre flexibilidade sem perder de vista as necessidades do cliente, oferecer produtos personalizados, lidar com customização em massa e com a complexidade gerada. As implicações práticas também são relevantes para a competitividade industrial. O objetivo da pesquisa é analisar a flexibilidade em sistemas produtivos de alto volume de produção e alta variedade de produtos, típicas na produção de veículos comerciais. A análise envolve temas multidisciplinares relativos ao pensamento enxuto, agilidade e customização em massa. Baseado no algoritmo para decisão multi critério Incomplete Pairwise Comparison (IPC), adaptado do Processo Analítico Hierárquico (AHP), apresenta-se a avaliação dos fatores que influenciam flexibilidade na percepção dos Executivos e tomadores de decisão das diretorias de Produção, Logística, Qualidade, Finanças e Tecnologia da Informação. Registra-se como um resultado implícito a parceria Universidade-Empresa por meio do curso de Mestrado Profissional. O resultado organizacional desta pesquisa foi a criação de um instrumento de avaliação e priorização de projetos de melhoria para busca de flexibilidade da operação. Este instrumento foi validado no decorrer de sua aplicação no portfólio de projetos de melhoria para flexibilidade da montadora e atendeu às expectativas da montadora pesquisada / Abstract: Companies decide to increase their producto portfolios as a pathway to improve competitiviness, increase sales, reach new markets and, in this context, they deal with problems regarding a higher variety and volume production. The recent literature analyses indicates reasearch opportunities in order to improve the knowledge regarding flexibility taking into account customer's demands, customized products and how to deal with mass customaization and complexity management. Practical effects are also an important role regarding industrial competitivity. The objective of this research is to analyze the flexibility in production systems with high volume production and high products variety, components of commercial vehicles production systems. The analysis of this research involves multidisciplinary themes regarding lean thinking, agility and mass customization. Based on Incomplete Pairwise Comparison (IPC) multi criteria decision taking algorithm, adapted to Analytic Hierarchy Process (AHP), the research presents the factors that influence flexibility evaluation based on the managers and decision taking employees opinions from Production, Logistics, Finance, Quality and Information Technology departments of the studied company. The result of this research is a evaluation tool to analyze and prioritize projects in order to increase operational flexibility. This tool was evaluated during projects portfolio development and attended to the commercial vehicles manufacturing studied company / Mestre

El presente trabajo se centra en el área de llenado de king kong de la empresa Fábrica de Dulces Finos Bruning SAC puesto que posee una baja productividad, ocasionada por la falta de capacitación al personal, procesos no estandarizados, altos tiempos improductivos y personal fatigado; es por ello que se planteó como objetivo principal proponer la mejora del proceso productivo en la empresa Fábrica de Dulces Finos Bruning SAC para incrementar su productividad. En tal sentido, se analizó a través de herramientas de ingeniería el proceso productivo del llenado, obteniendo que actualmente cuenta con una productividad de 0,116 unid/sol. Posteriormente, se propusieron tres mejoras: un estudio de tiempos, balance de línea y un programa de capacitación, consiguiendo un tiempo estándar de 2,44 min/unid para la elaboración de una hojarasca redonda (1 kg), una reducción de 0,10 min/unid en el cuello de botella, el aumento de la eficiencia en un 5,96% y una nueva productividad de 0,14 unid/sol. Finalmente, se concluyó que las propuestas eran viables económicamente debido a que se obtuvo un VAN de S/ 12 212, TIR de 46% y un B/C de 1,12 soles. / The present work focuses on the assembly area of king kong of the company Fabrica de Dulces Finos Bruning SAC since it has low productivity, this is caused by the lack of training for personnel, non-standard processes, high unproductive times and fatigued personnel; that is why the main objective was to propose the improvement of the production process in the company Fabrica de Dulces Finos Bruning SAC to increase its productivity. Given this, the assembly production process was analyzed through engineering tools, obtaining that it currently has a productivity of 0.116 units/sol. Subsequently, three improvements were proposed: a time study, line balance and a training program, achieving a standard time of 2.44 min/unit for the production of a round (1 kg), a reduction of 0.10 min /unit at the bottleneck, increased efficiency by 5.96% and a new productivity of 0.14 unit/sun. Finally, it was concluded that the proposals were economically viable since a NPV of S/ 12,212 was obtained, IRR of 46% and a B/C of 1.12 soles.

Esta investigación tiene como objetivo general mejorar la productividad al rediseñar el sistema de mantenimiento de una empresa molinera del departamento de Lambayeque Al efectuar el diagnóstico de las operaciones de producción y mantenimiento de la empresa, se evidenció baja productividad siendo la principal causa el deficiente mantenimiento preventivo, se incumplió con el 45 % de este; 207 horas de parada por mantenimiento correctivo dejando de producir 1705 t de arroz valorizados en S/. 1 875 500, además 7% de reprocesos; no se realizan capacitaciones a los trabajadores; falta de orden y limpieza, ausencia de suministros. Ante todo esto se propone rediseñar el sistema de mantenimiento para incrementar los rendimientos de la planta molinera de arroz con herramienta lean de gestión como el mantenimiento productivo total –TPM, sumado a una serie de actividades, capacitaciones a los trabajadores y elaboración de protocolos, procedimientos actualizados de manuales de mantenimiento preventivo, nuevos formatos de gestión TPM, así también se propone control y seguimiento de TPM utilizando indicadores de control como eficiencia global del equipo. Después del rediseño se estima mejorar la productividad total de 1,23 a 1,29; incremento de los rendimientos de materia prima de 58% a 63%. El % de cumplimiento de mantenimiento preventivo aumento de 55% a 62%, se lograría reducir el número de fallas de 41 a 22 por mes y la Eficiencia Global de los equipos aumentaría de 52 a 63%. Obteniendo un beneficio – costo de 3,8 soles. / The general objective of this research is to improve productivity by redesigning the maintenance system of a milling company in the department of Lambayeque. When making the diagnosis of the production and maintenance operations of the company, low productivity was evidenced, the main cause being deficient preventive maintenance, 45% of this was met; 207 hours of stoppage due to corrective maintenance, ceasing to produce 1,705 t of rice valued at S /. 3 751 000, plus 7% of reprocesses; workers are not trained; lack of order and cleanliness, lack of supplies. Given all this, it is proposed to redesign the maintenance system to increase the yields of the rice milling plant with a lean management tool such as total productive maintenance -TPM, added to a series of activities, training of workers and development of protocols, procedures updated preventive maintenance manuals, new TPM management formats, as well as control and monitoring of TPM using control indicators such as overall equipment efficiency. After the redesign, it is estimated to improve total productivity from 1.23 to 1.29; increase in raw material yields from 58% to 64%. The% of preventive maintenance compliance increased from 45% to 62%, the number of failures would be reduced from 41 to 22 per month and the Global Efficiency of the equipment would increase from 52 to 63%. Obtaining a benefit - cost of 3.8 soles.

La presente investigación se realizó en una empresa agroindustrial dedicada al procesamiento de granos, la cual tuvo como objetivo principal incrementar la productividad mediante la propuesta de mejora del proceso productivo (línea mecanizada y línea manual). La metodología consistió en tres etapas, se diagnosticó el proceso actual de la empresa aplicando técnicas como el estudio de tiempos y de movimientos, flujogramas y diagramas bimanuales con la finalidad de medir las variables de estudio. Seguidamente, se propuso las mejoras, donde planteo el reajuste de caudal de aire para la selectora de grano, el nuevo método de trabajo en la etapa de selección manual, el rediseño de puestos trabajos y capacitaciones. Posteriormente, se evaluaron las propuestas a través del análisis del costo – beneficio para determinar la viabilidad de la propuesta. Los resultados obtenidos fueron el aumento de la producción y productividad para las dos líneas de la empresa; en la línea mecanizada, la producción paso de 428 sacos/mes a 1775 sacos/mes y la productividad de 1,48 soles a 3,49 soles, mientras que, para la línea de selección manual la producción aumento de 281 sacos/mes a 325 sacos/ mes y la productividad paso de 1,42 soles a 1,64 soles, además se determinó que la propuesta tiene un B/C de 1.14. / The present research was carried out in an agroindustrial company dedicated to grain processing, whose main objective was to increase productivity by proposing to improve the production process (mechanized line and manual line). The methodology consisted of three stages, the current process of the company was diagnosed by applying techniques such as time and movement study, flow charts and bimanual diagrams in order to measure the study variables. Next, improvements were proposed, where I proposed the readjustment of the air flow for the grain selector, the new work method in the manual selection stage, the redesign of job positions and training. Subsequently, the proposals were evaluated through cost-benefit analysis to determine the viability of the proposal. The results obtained were an increase in production and productivity for the two lines of the company; In the mechanized line, production went from 428 bags/month to 1,775 bags/month and productivity from 1,48 soles to 3,49 soles, while, for the manual selection line, production increased from 281 bags/month to 325 bags/month and productivity went from 1,42 soles to 1,64 soles, in addition it was determined that the proposal has a B/C of 1.14.