36 resultados para Continuous quality improvement


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Mecânica - FEG

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Since the Seventies, there has been a growing degradation of concrete structures in Brazil. For that reason, much research has been made on the durability of those structures, aiming at contributing towards quality improvement and reduction of maintenance and repair costs. This study evaluates the behavior of the durability of high-performance concrete with additions, replacing part of the cement and aggregates with rice husk ash and tire rubber, respectively. Durability tests were carried out in which concrete was subjected to several degradation processes, such as the action of water, temperature, salts and acid solution. The results indicated that the addition of active silica or rice husk ash, both with tire rubber did not worsen the durability of concrete. In fact, rubber proved to be very effective in preventing the action of chemical agents, high temperatures and the penetration of water. Rice husk ash, despite the larger diameter of particles, had similar results to that of the active silica.

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The research that originated this article was aimed at analyzing how the Brazilian publications from 1990 through 2005 set out the relationship between the appointment of school principals and democratic management and quality education. To that end, 38 books were selected and divided into three periods: 1990-1995; 1996-2000; 2001-2005. The findings indicate that from the second period on there is increasing consensus among scholars about the election of school principals as a form of appointment directly related to the democratization of management and quality improvement, defined as a collective and participatory construction of educational goals and practices.

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Pós-graduação em Engenharia de Produção - FEB

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The Brazilian Journal of Special Education was first published in 1992 and has been continuously evaluated internally by scholars of the Brazilian Association of Researchers in Special Education, and externally, by Capes and ANPEd. The last evaluation made by Capes indicated a Qualis A2 for the Brazilian Journal of Special Education. The aim of this article is to discuss these evaluations in order to improve the quality of the journal. The proposed evaluation focused on qualitative parameters presented by the Anped assessment, and statistical parameters available by SciELO. The result of this analysis is that the Brazilian Journal of Special Education has similar parameters to journals qualified as A1, and sometimes even higher than those. Discussion of quality improvement of the journal indicated: 1) the need to receive articles via internet through its peer review system; 2) assignment of coeditors to ensure the evaluation flow of submitted manuscripts; 3) investment in infrastructure, such as purchase of computers and software to improve editing and publishing.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Planejamento e Análise de Políticas Públicas - FCHS

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Pós-graduação em Educação - FFC

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O estudo foi efetuado durante o período de chuva (dezembro-fevereiro) em seis viveiros de produção semi-intensiva de peixes, a fim de avaliar o efeito da chuva na qualidade da água de viveiros que apresentam fluxo contínuo de água, a qual é passada de um viveiro para outro sem tratamento prévio. Foram amostrados oito pontos de coleta nas saídas dos viveiros. O viveiro P1 (próximo à nascente) apresentou as menores concentrações físicas e químicas da água e as maiores no viveiro P4 (considerado um ponto crítico recebendo material alóctone proveniente de outros viveiros e do escoamento do setor de criação de rãs). A disposição seqüencial dos viveiros estudados promoveu aumento nas concentrações dos nutrientes, clorofila-a e condutividade. As chuvas características desta época do ano aumentaram o fluxo de água nos viveiros e conseqüentemente, carreando material particulado e dissolvido de um viveiro para outro e, promovendo um aumento das variáveis limnológicas em direção do P3 ao P6. Os resultados sugerem que a chuva no período de estudo afetou positivamente a qualidade da água dos viveiros estudados, porém, como os sistemas analisados estão dispostos em distribuição seqüencial e escoamento constante da água de viveiros e tanques paralelos sem tratamento prévio, cuidados devem ser averiguados para que o aumento do fluxo de água provocado pelas chuvas não tenha efeito adverso nos viveiros estudados.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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This study evaluated selected limnological variables in inlet water in six sequentially distributed semi-intensive fishponds. Data were collected during 15 consecutive days in three distinct grow-out periods (May, October and January). Only phosphorus and pH varied among sites and periods (p < 0.01); the opposite (p > 0.05) occurred in the cases of nitrite and dissolved oxygen. No variation was reported with regard to dissolved oxygen, conductivity, alkalinity, free CO2, bicarbonate, chlorophyll-a, nitrite and ammonia did not vary throughout the period (p > 0.05). In May, or rather, the final grow-out period, the fishponds displayed high concentrations, mainly in nitrogen compounds. As from fishpond 3, the inlet water contained high levels of nutrients. The water is passed from pond to pond, evidencing the need for management practices adequate to the specific conditions of each pond. Water quality should be monitored more frequently during high grow-out period when food addition is more intense. Thereafter, more care should be taken, as highest phosphorus concentrations occurred in May.