Technology and innovations have long improved farming over the world and, as Industry 4.0 quickly spread, farmers have embraced high-level automation and data exchange, driving a transformation called Farming 4.0. Consequently, precise and even real-time field information have become easily accessible. Though, analyzing all this information requires great skills and tools, like mathematical knowledge and powerful computational algorithms to reach farmers expectations. This research explores the Crop Rotation Problem (CRP) and its relevance for the integration of Precision Agriculture (PA) and farm management. This paper presents a new mathematical approach for the CRP based on the nutrient balance and crop requirements, increasing the sustainable appealing of the problem. A real-encoded genetic algorithm (GA) was developed for optimization of the CRP. The results indicate good performance in mid and long-term crop scheduling.
Soybean production has expanded intensively in South America over the last decades. As the second leading worldwide soybean producer, Brazil has in prospect to increase market share through production growth in soybean areas. Therefore, soybean fields ought to encompass a sizeable region among different types of soil and climate conditions, and so advanced irrigation methods should be advantageous. This present work aims to optimize soybean production through an irrigation system control based on environmental and plant requirements. It was developed an embedded fuzzy controller that is able to process soil moisture, air moisture, temperature, soil type and soybean growth stages and it returns the ideal amount of water. Also, to accomplish the data acquisition, a multiparameter sensor device establishes remote connection and provides continuous in-field measurement. The efficiency of the fuzzy controller and the monitoring unit was verified through simulations, and so, results reached the expected model.
Usinagem é um processo de fabricação que continua evoluindo constantemente. O objetivo deste artigo é avaliar e comparar as características físico-químicas dos fluidos de corte coletados periodicamente em um torno CNC do Laboratório didático do Centro Universitário de Anápolis – UniEVANGÉLICA. Para execução deste foi verificado a compatibilidade com as fichas técnicas dos fabricantes para montagem de um laudo de avaliação. Foi constatado que, por ser tratar de um equipamento industrial aplicado para fins didáticos e consequentemente operar poucas horas no mês, os fluidos tiveram uma degradação excessiva, sendo estes fatores de risco ao maquinário.
Resumo O ensaio de expansão de furo é utilizado para estudar os comportamentos específicos da estampagem de chapas com furos e sua respectiva expansão nas chapas de aços, suas propriedades mecânicas, detalhamento e análise da propagação de trincas e sua conformação. Para a aplicação e normalização deste ensaio de expansão de furo, devem obedecida a norma ISO 16630(2017) para o desenvolvimento de um dispositivo para uma máquina universal de ensaios mecânicos. Palavras-chave:Ensaio de expansão de furo; Trincas; Conformação; Estampagem.
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