This study aims to optimize the one-dimensional cutting process of aluminum bars for the production of aluminum doors. Reducing the use of bars and the amount of material that becomes scrap is a key factor in process efficiency, reducing the need for raw material procurement. The mathematical model used considers the size of the bar, the number and size of cuts, the size of the leftovers that can be used and the size of the leftovers that are considered scrap. Based on real data from a company in the aluminum frame segment, the mathematical model was used to simulate three different scenarios. Three different objective functions were used in the simulations, and the results obtained in each scenario were described in order to indicate the advantages and disadvantages of using each objective function. For the instance sizes studied, the model is able to obtain optimal solutions with little computational time.

The need for new technologies and efficient management of resources requires the use of performance indicators whose information ensures management in a visual and fast way. Today, maintenance is a sector that is technological and developed, and indicators that can develop the team a lot. The proposed study aims to analyze the individual performance indicators of the maintenance team, in addition to identifying the main problems affecting efficiency in the sector. To this end, a case study was carried out in the maintenance sector of a food industry. With the subsequent application of Pareto, it was possible to observe which the most impacting points were. After the application of Ishikawa, it is possible to identify the causes, and with the 5W2H points of improvement in the process were defined, planning with the actions for monitoring and execution, this action plan was proposed because of all analysis of the indicators. It is concluded that the indicators are necessary for a good management, and the application of the tools facilitates the vision of the indicators and still allows the improvement of them.

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As organizações, em busca por melhor desempenho operacional e por vantagem competitiva, têm buscado alternativas para a identificação de problemas e oportunidades de melhoria no contexto do gerenciamento da cadeia de suprimentos. Nesse contexto, a Análise de Redes Sociais, em conjunto com a Teoria dos Grafos, surge como uma das ferramentas utilizadas para tal finalidade. Logo, o presente artigo busca analisar os efeitos da imersão relacional e estrutural no desempenho logístico de uma empresa de esquadrias de alumínio a partir de um estudo de caso. Para a obtenção de dados e informações, foram realizadas entrevistas semiestruturadas com o gestor responsável pelo setor de compras. Os resultados mostram que alguns fornecedores possuem considerável influência na cadeia de suprimentos, seja ela positiva ou negativa. Ela pode ser positiva trazendo a consolidação de parcerias entre as empresas com uma relação forte e confiável e será negativa, por exemplo, quando no processo o produto sofre avarias ou atrasos. Destaca-se ainda a necessidade de a empresa melhor estabelecer indicadores de desempenho logístico a fim de avaliar quantitativamente os impactos da cadeia nas atividades operacionais, com o objetivo de auxiliar em tomadas de decisões estratégicas mais assertivas. Palavras-chave: Análise de redes sociais; Cadeia de suprimentos; Desempenho operacional.

Due to the high competition in the construction scenario, it is necessary to use tools that help the production optimization, performing planning and control of the work, which aims to reduce the waste and costs of the projects. In addition, the construction industry has high delays, no quality controls and a high rate of material waste. In turn, there is a need to make employees self-manageable, such as the builder, allowing them to make decisions and be autonomous. Thus, this article aims to analyze the principles of Lean Construction in a construction site from the mapping of the processes of a small work in order to propose improvements of the construction system. For this, a case study was carried out, and the information was obtained from the monitoring of the execution of the works, mapping of the current process and subsequent analysis and proposition of a future state. New process flows have been proposed to reduce waste from the principles of LC. Thus, a reference model was presented to be followed by the company in future works with standardized management procedures, and such model can be used by other companies or adapted to their reality.

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