Resolução do problema de sequenciamento de múltiplas linhas de montagem de modelos mistos em ambiente de produção enxuta

This work deals with the sequencing of Multi-Mixed-Model Assembly Lines in a lean manufacturing environment, where an operational structure where several kanbans support several mixed-model assembly lines, so that all assembly lines can receive parts or sub-assemblies from all suppliers. To optimize this system, the sequencing seeks to minimize the distance between the real consumption and the constant ideal consumption of parts or subassemblies, thereby reducing the scaling of kanbans and intermediate stocks. To solve the sequencing problems, the method Clustering Search was applied along with the metaheuristics Variable Neighborhood Search, Simulation Annealing and Iterative Local Search. Instances from the literature and generated instances were tested, thus allowing comparing the methods to each other and with other methods presented in the literature. The performance of the Clustering Search with Iterated Local Search stands out by the quality and robustness of their solutions, and mainly for its efficiency, whereas it converges to better results at a lower computational cost

Arranjo espacial de plantas na cultura do pinhão manso em Selvíria (MS)

Pós-graduação em Agronomia - FEIS

Manejo da adubação na cultura do feijão em sistema orgânico de produção

Pós-graduação em Agronomia - FEIS

Caracterização e redução das oscilações espúrias resultantes da representação de linhas de transmissão por meio de elementos discretos de circuitos

Pós-graduação em Engenharia Elétrica - FEIS

epresentação de linhas de transmissão por meio do modelo de bergeron: inclusão do efeito da frequência nos parâmetros longitudinais

Pós-graduação em Engenharia Elétrica - FEIS

Estimação de parâmetros de linhas de transmissão utilizando técnicas de decomposição modal: Aplicação em linhas com plano de simetria vertical

Pós-graduação em Engenharia Elétrica - FEIS

Incidência de mosca-minadora e insetos vetores em sistemas de manejo de pragas em tomateiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Plant density in production of mini lettuce cultivars in organic system management

Production of mini vegetables in organic system is a good alternative to improve profit, but there are no researches about the optimum plant density for these cultivars in Brazilian conditions. Two experiments were conducted to evaluate the production of mini lettuce cultivars in different plant densities. Experiment 1 was conducted from January 1th (sowing) to February 10th (harvesting), 2012. The experimental design was completely randomized blocks, with six treatments in factorial scheme, 3 mini lettuce cultivars (Tudela, Renoir and Sartre) x 2 spacing between plants (16 and 20 cm), with eight replications and plots (2.04 m(2)) with six rows, spaced 15 cm. Experiment 2 was conducted from June 6th (sowing) to July 18th (harvesting), 2012. The cultivars Sartre and Renoir were evaluated under four plant densities (444,444; 333,333; 266,667 and 200,000 plants ha(-1), corresponding to spacing of 15x15, 15x20, 25x15 and 25x20 cm, respectively). Eight treatments were defined by a factorial scheme 2 (cultivars) x 4 (plant densities) and arranged in a completely randomized block design, with nine replications and plots with 2.04 m2. The evaluated characteristics in both experiments were total and marketable fresh weight per plant, plant dry weight, plant diameter and height, marketable yield and discard percentage. In first experiment, during the summer, cultivar Sartre showed the highest marketable fresh weight (72 g plant(-1)). Heaviest plants (91.6 g plant(-1)) were obtained with the higher plant spacing, but the highest yield (2.51 kg m(-2)) was obtained with the smaller spacing. In winter, plants with higher total (190 g plant(-1)) and marketable (146 g planta(-1)) fresh weight were obtained with cultivar Sartre, and the same was observed in low plant density. However, the higher plant density, the higher the yield.

Influência do espaçamento do feixe de laser Nd: YAG na obtenção de óxidos e nitretos na superfície do titânio em pressão atmosférica

Neste trabalho investigou-se a modificação de superfície do titânio pela irradiação com feixe de Laser Nd:YAG. Os parâmetros do laser como a potência, o comprimento de onda, a frequência, a velocidade de varredura e a área de exposição foram mantidos constantes, exceto o espaçamento da matriz, o qual foi de 0,01 e 0,02 mm. A caracterização da superfície foi realizada por Microscopia Eletrônica de Varredura (MEV) e Difração de Raios X (DRX), sendo que os espectros foram refinados pelo método Rietveld. Pela análise de MEV, observou-se uma mudança na topografia, obtendo uma superfície rugosa produzida pelo fenômeno de ablação. As análises por Rietveld dos espectros de difração de raios X detectaram TiN, Ti2N, TiO2 (anatásio e rutilo), sendo que a amostra com espaçamento 0,01 mm apresentou uma maior quantidade de óxidos e nitretos. Isso pode ser devido à sobreposição do feixe, induzindo à formação de uma superfície com maior estabilidade termodinâmica. Os óxidos e nitretos obtidos são de grande importância, pois são responsáveis por produzir uma maior interação entre o osso-implante.

Produção e qualidade de inflorescências de couve-flor em função da densidade de plantio

Cauliflower is one of the most planted vegetable throughout Brazil, being a very profitable crop. The use of denser plantings can increase crop yield and improve financial returns to producers. This study aimed to verify the combination effect of different spacing between plants in row and between rows on the cauliflower 'Piracicaba Precoce’ inflorescences productivity and quality. In the experiment, a randomized block design was used and treatments consisted in three distances between rows (70, 80 and 90 cm) with three distances between plants in row (50, 60 and 70 cm) and four replications. Total productivity and productivity by inflorescences size classes were assessed as well as the quality by checking the inflorescences’ mass. The row density did not change the produced heads quality, although the density between plants reduced the inflorescences size. The spacing 70 x 50 cm, totalizing 28,571 plants per ha, due the higher productivity, greater than 14.0 t ha-1 , and still not compromise the inflorescence size can be recommended to the cauliflower "Piracicaba Precoce” production in the region.

Micronutrientes e biorregulador via foliar em diferentes estádios de desenvolvimento de cultivares de feijão, visando produção e qualidade de sementes

Pós-graduação em Agronomia - FEIS

Inclusão das representações de gary e de skilling-umoto em modelos de linhas de transmissão trifásicas: Aplicação em simulações de transitórios eletromagnéticos em sistemas de energia elétrica

Pós-graduação em Engenharia Elétrica - FEIS

Cultura, arte e sociedade: reflexões a partir da linguagem corporal da capoeira angola e suas linhas desenhadas no espaço

Dance-fight-game, art, religiosity, therapy, entertainment, ritual act, in short, "a way of being", are some of the various definitions/qualities attributed to the afro-brazilian cultural manifestation called "Capoeira Angola". Multivocal polysemic in its essence, Capoeira Angola is expressed in different languages which ranges from the types of touches of the musical instruments that make up the orchestra, through different types of songs, until we get the non-verbal communication established by the bodies of "capoeiristas" in the game and/or in the training body situation. The aim of this paper is to think of the line drawing in space, a significant problem in the execution of body movements of this practice. To address the relationship between line, efficiency and aesthetics of body movements, it is developed an ethnography in the Academy of João Pequeno de Pastinha-Sports Center of Capoeira Angola, based on anthropological interpretative approach, in which the concept of culture is semiotic.