Sistema supervisório para o método de elevação plunger lift

SOARES, Lennedy C. ; MEDEIROS, Adelardo A. D. de ; PROTASIO, Alan D. D. ; BOLONHINI, Edson H. Sistema supervisório para o método de elevação plunger lift. In: CONGRESSO BRASILEIRO DE PESQUISA E DESENVOLVIMENTO EM PETRÓLEO E GÁS, 5., Fortaleza, CE, 2009. Anais...Fortaleza: CBPDPetro, 2009.

Modelagem dinâmica e simulação computacional de poços de petróleo verticais e direcionais com elevação por bombeio mecânico

LINS, Filipe C. A. et al. Modelagem dinâmica e simulação computacional de poços de petróleo verticais e direcionais com elevação por bombeio mecânico. In: CONGRESSO BRASILEIRO DE PESQUISA E DESENVOLVIMENTO EM PETRÓLEO E GÁS, 5. 2009, Fortaleza, CE. Anais... Fortaleza: CBPDPetro, 2009.

A relação entre os jovens e o corpo em Natal

O presente estudo resulta de uma pesquisa em desenvolvimento na Universidade Federal do Rio Grande do Norte que busca estabelecer relações entre o papel do corpo, em um contexto midiático, na construção e constituição da subjetividade de jovens em Natal, capital norte-riograndense. Expressões dessa subjetividade indicam que o corpo, a mídia eletrônica e a Internet são referências importantes que permitem perceber traços ao mesmo tempo singulares e universais de uma cultura juvenil, que é complexa e ambivalente por natureza

Eficiência e razão de hedge: uma análise dos mercados futuro brasileiros de boi, café, etanol, milho e soja

This research aims to investigate the Hedge Efficiency and Optimal Hedge Ratio for the future market of cattle, coffee, ethanol, corn and soybean. This paper uses the Optimal Hedge Ratio and Hedge Effectiveness through multivariate GARCH models with error correction, attempting to the possible phenomenon of Optimal Hedge Ratio differential during the crop and intercrop period. The Optimal Hedge Ratio must be bigger in the intercrop period due to the uncertainty related to a possible supply shock (LAZZARINI, 2010). Among the future contracts studied in this research, the coffee, ethanol and soybean contracts were not object of this phenomenon investigation, yet. Furthermore, the corn and ethanol contracts were not object of researches which deal with Dynamic Hedging Strategy. This paper distinguishes itself for including the GARCH model with error correction, which it was never considered when the possible Optimal Hedge Ratio differential during the crop and intercrop period were investigated. The commodities quotation were used as future price in the market future of BM&FBOVESPA and as spot market, the CEPEA index, in the period from May 2010 to June 2013 to cattle, coffee, ethanol and corn, and to August 2012 to soybean, with daily frequency. Similar results were achieved for all the commodities. There is a long term relationship among the spot market and future market, bicausality and the spot market and future market of cattle, coffee, ethanol and corn, and unicausality of the future price of soybean on spot price. The Optimal Hedge Ratio was estimated from three different strategies: linear regression by MQO, BEKK-GARCH diagonal model, and BEKK-GARCH diagonal with intercrop dummy. The MQO regression model, pointed out the Hedge inefficiency, taking into consideration that the Optimal Hedge presented was too low. The second model represents the strategy of dynamic hedge, which collected time variations in the Optimal Hedge. The last Hedge strategy did not detect Optimal Hedge Ratio differential between the crop and intercrop period, therefore, unlikely what they expected, the investor do not need increase his/her investment in the future market during the intercrop

Responsabilidade social empresarial: uma avaliação do projeto "Escola de Informática e Cidadania" da Mineradora "Y" situada no Estado do Pará

The subject Responsibility Enterprise Social (RSE) is relatively recent in the half national academic and the world of the management businesses as practical. For the lack of socialization of experiences and clarity of concepts, shunting lines in the agreement of the subject and the conduction of the interventions occur. It was looked to inquire, in this research, the development of the project of Social Responsibility Enterprise ―School of Computer science and Citizenship‖ of a situated company in the State of Pará, objectifying to evaluate it and later to understand it. For this, one searched to describe the characteristics and structure of the School, to identify to the lines and lines of direction adopted for this Project and to identify to the influence and results of the same in the life of pupils, professors and egresses of the School. It is characterized for a study of case with qualitative boarding of descriptive character, carried through interviews structuralized in a sample of 21 divided members of the School between professors, pupils and egresses. It was used of the analysis of categorical content, having as axle for the interpretation of the data the Social Responsibility, the Digital Inclusion and the Education. The gotten results inform that the infrastructure has challenges to face, point disparities between the conception and practical of the categories characterized in the Politician-Pedagogical Project of the EIC and the influence that, exactly under limits, the life of the professors, pupils reaches and egress. One evidenced that Social action for damages of this company when come back toward this project, they had not been evidenced. For this prism, these actions had only remained in the assistencialist speech and not structural, being thus, the company is not fulfilling its paper of transforming element of the reality of its clientele and the population that lives in it s around