Mestrado em Engenharia de Produção

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https://repositorio.ufcat.edu.br/handle/tede/84

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Agora exibindo 1 - 5 de 5

Análise do sistema de medição e de fatores do ângulo de repouso em fertilizantes
(Universidade Federal de Goiás, 2019-09-11) Ferreira, Isabel Santana Borges; Fernandes, Nilson José; http://lattes.cnpq.br/4954825505203967; Peruchi, Rogério Santana; http://lattes.cnpq.br/2633968496533807; Guimarães, Marco Paulo; Rotela Junior, Paulo; Peruchi, Rogério Santana; Fernandes, Nilson José
This dissertation presents a statistical study and experimental study to analyze the rest angle measurement system in fertilizers of different particle sizes (1.5 mm
Desenvolvimento de um disco pelotizador em escala laboratorial utilizando controle em malha aberta
(Universidade Federal de Goiás, 2019-09-19) Garcia, Eloisa Angélica Silva; Guimarães, Marco Paulo; http://lattes.cnpq.br/4547166859048137; Guimarães, Marco Paulo; Fernandes, Nilson José; Santos, Andrea Cristina dos
Pelletizing was created with the purpose of using ores with particle size less than 0.15 mm, obtaining the agglomerates by rolling the material in drums or discs. This work aimed to develop an automated ore pelletizing equipment, in laboratory scale, with open loop control of the inclination, the angular velocity of the equipment and the amount of water added to the material, generating a product according to the selected size on the machine panel. All tests were performed for thirty minutes, in batch, with five kilograms of material, using limestone as the test mineral. The raw pellets were characterized in size by bench top vibratory screening assays. Initially, the quantities were manually varied to infer their effect on the dimensions of the generated product. Then the appropriate parameters were selected for the generation of a small, medium and large product, according to the smallest variability obtained in the tests. These parameters were later used in open-loop PLC programming, automatically controlling the inclination, angular velocity, and amount of water fed to the agglomeration parameters according to the size selected by the operator. The final tests were performed with automated equipment confirming the efficiency of open loop control in the generation of the three product sizes, affirmed by the approximation of the d 50 of each test before and after automation.
Proposta de melhoria da gestão hospitalar com uso da lean healthcare
(2021-09-28) Cechin, Débora Paula Borges De Oliveira; Bachega, Stella Jacyszyn; Tavares, Dalton Matsuo; Fernandes, Nilson José; Queiroz José Antonio de,
Evidências e pesquisas demonstram a necessidade de mudanças no setor de saúde, caracterizando os desafios enfrentados na gestão hospitalar. Aplicações do lean, conhecido como Lean Healthcare, vêm ocorrendo em diversas partes do mundo e inúmeros têm sido seus resultados. Apesar das melhorias que a Lean Healthcare tem proporcionado, pouco tem sido a percepção dos benefícios gerados aos olhos dos clientes. Além disso, nota-se que há um grande interesse em relação a integração da Lean Healthcare com outras técnicas. Assim, para contribuir com a melhoria da perspectiva de valor aos olhos dos clientes e integração da Lean Healthcare com outras técnicas, o presente trabalho tem o objetivo de propor o uso de ferramentas afins a Lean Healthcare para melhoria de processos na gestão de um hospital. Ressalta-se que o foco da melhoria é a redução do lead time do processo. Para isso, foi realizada uma pesquisa aplicada, por meio de uma abordagem qualitativa, com a realização de uma pesquisa bibliográfica e um estudo de caso no setor de exames de imagem de um hospital. As principais técnicas da Lean Healthcare utilizadas no estudo foram o mapeamento do fluxo de valor e a análise dos sete desperdícios, que em conjunto com uma pesquisa aplicada aos clientes do hospital de estudo e a revisão teórica foi construída uma proposta de melhoria. Dentre as melhorias que foram geradas a partir da aplicabilidade da proposta estão a redução do lead time em 22,95%, do tempo de espera em aproximadamente 22,97%, do deslocamento tanto aos clientes quanto dos colaboradores em 13,18%, a diminuição de desperdícios que impactarão diretamente na melhoria da qualidade no atendimento, menor tempo de exposição no ambiente hospitalar e maior satisfação na entrega dos serviços de saúde. Desse modo, o estudo pode contribuir no desenvolvimento científico da área de Lean Healthcare, com propostas para uma melhora nos processos do setor de exames de imagem, maior identificação e definição de valor aos olhos dos clientes e a contribuição para a comunidade acadêmica referente a pesquisas que utilizem ferramentas da Lean Healthcare em conjunto com outras técnicas. Ademais, a pesquisa contribuiu também para que outras instituições de saúde possam enxergar alguns obstáculos referentes ao setor de exames de imagem e apresenta a proposta da inclusão de um sistema (app) para contribuir com a agilidade do processo do agendamento até o resultado do exame, com o foco na diminuição do tempo de espera do paciente.
Proposta de processo para desenvolvimento de um centro de descarte e reuso de lixo eletrônico na Universidade Federal de Goiás
(Universidade Federal de Goiás, 2020-03-10) Silva, Edvaldo Capingote Serafim da; Tavares, Dalton Matsuo; http://lattes.cnpq.br/2307520004470578; Bachega, Stella Jacyszyn; http://lattes.cnpq.br/6057931770645811; Fernandes, Nilson José; Paula, Heber Martins de; Bachega, Stella Jacyszyn
In an attempt to promote awareness of the destination of electronic waste in universities, it is necessary to adopt sustainable practices that can achieve social, economic and environmental benefits. It has to be said that activities such as recycling or even reusing electronic waste (Green IT actions) considered outdated or useless in IEs, can be an important initiative to reduce the need for raw materials and, thus, contribute positively to reducing pollution in the planet. From this approach, the research problem is defined: how to implement an electronic waste disposal and reuse center in a university? To guide the execution of the study, the hypothesis formulated for the research problem is: a disposal and reuse center ensures that electronic waste is not dispersed in university departments. Thus, the general objective is to propose a center for the disposal and reuse of electronic waste at a university. The specific objectives contribute: in the analysis of legislation (environmental and patrimonial) aimed at the disposal of electronic waste, in public institutions; identification of forms / models for the development of electronic waste disposal and reuse centers; and, development of a scenario for the disposal and reuse of electronic waste in a university via simulation. For this, the literature review was performed with the aid of the CiteSpace® software, using the Web of Science and Scopus databases. The sampling technique was used to find the number of disassembly timings for computer equipment, in order to compose some parameters needed in the simulation. It is also noteworthy that semi-structured scripts were applied in areas of interest, such as CEDIR-USP and UFG bodies, such as CERCOMP and DPAME. It is concluded that the execution of the project stimulates sustainable development, as well as local remanufacturing, recycling or reuse; the increase in the rates of waste collection and the pioneering nature of the disposal of material in a higher education institution in the state of Goiás.
Proposta de uso de simulação computacional para incorporação de conceitos e atividades de green it em uma universidade
(Universidade Federal de Goiás, 2019-03-15) Marques, Carulina; Bachega, Stella Jacyszyn; http://lattes.cnpq.br/6057931770645811; Bachega, Stella Jacyszyn; Fernandes, Nilson José; Tavares, Dalton Matsuo
The concept of Green IT refers to sustainable technologies and information systems, as well as environmentally correct practices in the field of Information Technology. Universities, which have the role of propagating and applying knowledge, play an important role as disseminators of ideas related to Green IT. Therefore, it is necessary to study ways to achieve sustainable measures in these educational institutions. Based on this assumption, the main objective of the present research is to evaluate, through computer simulation, the environmental impact of a university's computer laboratories in terms of energy consumption and CO2 emission. Through these metrics, it was possible to calculate the value of the eco-efficiency indicator. A review of the literature on the integrated approach of green it and sustainable university themes was also carried out. The method of analysis of cocitations in multiple perspectives was used, which allowed the evaluation of which authors are most frequent in research on the themes , most commonly used keywords, and which topics are best covered when themes are studied together. The novelty is that the integration of the concepts of Sustainable University and Green IT have not yet been approached together in the Campus that will be the target of the research. Therefore the results generated with the research are of importance for the scientific development of the university. The results obtained by joining these approaches will contribute to the achievement of some approaches to sustainable universities, and may be used by national and international universities. In addition, it becomes possible to strengthen scientific researches that have interdisciplinary / transversal traits.

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