852 resultados para Empresas públicas - Sistema de controle


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This study analysed the creation of businesses by entrepreneur women in the Currais Novos city, looking for verifying if they used making decision processes aligned to the Effectuation logic throughout the creation of their companies. To this, was accomplished a multiple cases and exploratory study, whit a qualitative approach of analyse, using the thematic life history technique that match accounts and semi-structured interview route, being accomplished like a long interview, where the researcher interact with the informer continuously. The semi-structured interview route was created by the adaptation of the interview route used by Tasic (2007). The present study appealed to a intentional selection of individuals in function of their importance in relation to the boarded theme. This means that the individuals were chosen in function of their social and theoretical representatively inside the considered situation. The participant individuals of this research were five entrepreneur women that act in the Currais Novos city, owners of five different companies. To the data treatment and analyse, was chosen the content analyse technique. This study worked with a priori theoretical categories. The categories of analyse in this study was obtained with base in the Effectuation approach (SARASVATHY, 2001a, 2001b, 2008), that is an alternative model of making decision to the classic model based in the causality principle. These categories are Clarity of Initial Aims , Tolerance to the Lost and Initials Investments , Control of Resources ( who I am , what I know and who I know ) and Promoting Over Contingencies . As result, the entrepreneur women researched, in a general way, hadn t clear initial aims at the companies creation moment, hadn t aversion to the risk to lose the time and the money that they were investing in the company in formation, they highlighted the products and services identity that offered with a strong link with Seridó region, they had experience in the field of activity in which they decided to open their companies, had the commitment of partners in the beginning of the business and they knew to transform the initial difficulties in opportunities. By the end, this study conclude that the entrepreneur women studied used, in a big part, making decision processes aligned to the Effectuation logic throughout the creation of their companies

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The separation methods are reduced applications as a result of the operational costs, the low output and the long time to separate the uids. But, these treatment methods are important because of the need for extraction of unwanted contaminants in the oil production. The water and the concentration of oil in water should be minimal (around 40 to 20 ppm) in order to take it to the sea. Because of the need of primary treatment, the objective of this project is to study and implement algorithms for identification of polynomial NARX (Nonlinear Auto-Regressive with Exogenous Input) models in closed loop, implement a structural identification, and compare strategies using PI control and updated on-line NARX predictive models on a combination of three-phase separator in series with three hydro cyclones batteries. The main goal of this project is to: obtain an optimized process of phase separation that will regulate the system, even in the presence of oil gushes; Show that it is possible to get optimized tunings for controllers analyzing the mesh as a whole, and evaluate and compare the strategies of PI and predictive control applied to the process. To accomplish these goals a simulator was used to represent the three phase separator and hydro cyclones. Algorithms were developed for system identification (NARX) using RLS(Recursive Least Square), along with methods for structure models detection. Predictive Control Algorithms were also implemented with NARX model updated on-line, and optimization algorithms using PSO (Particle Swarm Optimization). This project ends with a comparison of results obtained from the use of PI and predictive controllers (both with optimal state through the algorithm of cloud particles) in the simulated system. Thus, concluding that the performed optimizations make the system less sensitive to external perturbations and when optimized, the two controllers show similar results with the assessment of predictive control somewhat less sensitive to disturbances

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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O objetivo da presente pesquisa foi verificar a eficácia do herbicida tebuthiuron no controle de plantas daninhas quando associadas à presença de palha de cana-de-açúcar. Para isso, conduziu-se um experimento em condições controladas em casa de vegetação, utilizando-se vasos com quatro repetições, onde, além das testemunhas com e sem palha, o tebuthiuron foi aplicado em diferentes situações: sobre 5 t de palha ha-1; sobre o solo posteriormente recoberto com 5 t de palha ha-1; sobre o solo sem cobertura de palha; e com ou sem simulação de distintas quantidades de chuva aplicada antes ou após a aplicação do produto. A dose de Combine 500 SC (tebuthiuron) aplicada foi de 1.000 g i.a. ha-1, com consumo de calda equivalente a 200 L ha-1. As plantas daninhas presentes no experimento foram Brachiaria plantaginea, Brachiaria decumbens e Ipomoea grandifolia. Avaliou-se a porcentagem de controle das plantas daninhas aos 7, 14, 21, 28, 35, 42, 49 e 56 DAA nos tratamentos em que o tebuthiuron foi aplicado em pré-emergência e aos 3, 10, 17, 24, 31 e 38 DAA, quando o herbicida foi aplicado em pós-emergência; e a biomassa seca aos 56 ou 38 DAA. Verificou-se que, independentemente da planta daninha avaliada, os maiores índices de controle foram alcançados quando o tebuthiuron foi aplicado sobre a palha, simulando-se em seguida precipitação correspondente a 2,5 ou 30 mm de chuva, e nos tratamentos em que o herbicida foi aplicado diretamente no solo desnudo ou recoberto com palha. Dessa forma, para I. grandifolia, B. plantaginea e B. decumbens, os índices mais elevados de controle foram alcançados quando o tebuthiuron atingiu o solo, tanto aplicado diretamente como quando lixiviado da palha pela chuva simulada após a aplicação.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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O artigo trata da formação da indústria farmacêutica brasileira. Aborda algumas questões de história econômica e social, tais como o surgimento do sistema de saúde pública, as práticas de combate às doenças infecciosas, desde as desinfecções e produção de substâncias químicas pela indústria, à soroterapia e produção de soros e vacinas nas instituições de pesquisa científica públicas e nas empresas farmacêuticas privadas. Toma para análise da indústria farmacêutica privada nacional, a empresa Instituto Pinheiros - Produtos Terapêuticos S.A., enfatizando as relações entre seus cientistas, no desenvolvimento de produtos, de tecnologia e da própria discussão científica com as instituições públicas de pesquisa criadas no âmbito da política de saúde pública pelo estado de São Paulo.

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O objetivo do estudo foi avaliar a deposição de óxido de alumínio no campo operatório do cirurgião-dentista durante a utilização do sistema de abrasão a ar em consultório odontológico, bem como a efetividade da sucção de alta potência na captação desse pó. Por meio de um dispositivo para a coleta das partículas nos locais correspondentes às posições e distâncias de trabalho do profissional, dentes artificiais foram abrasionados. O sistema de sucção empregado para aspiração das partículas foi o de alta potência com sugador de saliva convencional e sugador com abertura ampliada por funil. A mensuração das partículas foi determinada pela quantidade em massa de óxido de alumínio depositada em placas de Petri. Os resultados obtidos por meio de estatística descritiva gráfica revelaram que a maior quantidade de pó se encontrava a 20 cm do operador e na posição de trabalho 9h, quando foi utilizado o sugador de saliva convencional. Uma vez comprovado que a sucção não é totalmente eficiente na aspiração do pó de óxido de alumínio, reforça-se a importância da proteção individual apropriada para o emprego seguro do sistema de abrasão a ar para pacientes e, principalmente, para os profissionais que trabalham com este tipo de tecnologia.

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Parasitic diseases in humans, transmitted by insects, affect about 500 million people living mainly in countries of low economic power. The control of these diseases is difficult to carry out, mianly due to social and political problems, enhanced by the capacity of these organisms to develop resistance to insecticides used to for their destruction. Some recent advances in the area of insect immunology have open the possibility for abetter epidemiological control of these diseases. The immune system of these insects, as well as that of other organisms, have the ability to recognize the infecting parasites and liberate a series of reactions which stop the infection. These reactions involve the circulating cells (hemocytes) against the parasite. These cells have the ability of phagocytize and liberate the production of various humoral factors, neutralizing the infection. Some promising results, obtained by the study of the immune system of malaria-transmitting insects, the sleeping disease, and dengue, are an example of this new sanitary strategy.

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The mapping crime using a Geographical Information System (SIG), besides a scientific activity, is an intelligent strategy of violence figthing, constituted in a base of information for discerning analysis of data, for better understanding and control of criminal action. This proposal of a GIS, for the region of Feira de Santana, State of Bahia - Brazil, shows how the mapping crime can be carried through a set of computational tools composed of hardware and software, through space information, in the study of its causes, consequences and ways for its control.

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The agricultural unpaved roads are important road structures for the economic and social agricultural development of the Nation, and the erosion provoked by rain water in the road bed and sides are closely related to bad draining, one of the main factors for their degradation. In order to make the draining system adequate, it is necessary to know about erodibility, infiltration capacity of water in the ground and adoption of mechanical slope abatement with grid elevation and water interception. This study presents drainage model through the construction of terraces with gradient transversally associated to the capitation basin in abruptic red dystrophic argisol soils, medium sandy texture, based on slops abatement techniques, elevating the road bed and deviating flow. The grain sized fractions of this ground (sand, silt, clay) and the aggregate stability indicated that this ground, under anthropic action, presents erosive processes resulting in superficial draining with ground hauling, sanding sources and courses of water situation below roads, providing great environmental impacts in the hydric bodies. The reduction of erosion problems in these unpaved roads is in the adoption of measures that intercept waters from the draining of their stream bed itself, as well as pluvial waters comings from adjacent areas of contribution, that are collected and conducted to inlaid terraces and capitation basis.

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Incluye Bibliografía