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| Lamounier, Wagner Moura. |
| It was intended in this research to detect and to analyze the existence of conditional volatility in the time series of the prices of the spot market of the Brazilian coffee in the New York Board of Trade (NYBOT) in the period between January of 1946 and December of 2000. The results of the models of GARCH type, applied for the prices of the coffee, indicated that the conditional variance of the residues of the models possess unit roots and the same one will not present a behavior of reversion to its historical average with passing of the time, after a shock. This happens because, the coefficients of volatility persistence had been all bigger or next to one |
| Tipo: Journal Article |
Palavras-chave: Volatility; GARCH model; Coffee prices.. |
| Ano: 2006 |
URL: http://purl.umn.edu/43814 |
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| Almeida, Gustavo Calixto Scoralick de; Lamounier, Wagner Moura. |
| The transgenic is a genetically modified organism or culture (OGM) that contains a gene that was artificially inserted, instead of having acquired naturally for pollination as they are for the conventional cultures. The “new agriculture “ based on this kind of products, points to a smaller degradation of the soils and of the environment, with reduction of the production costs and of the final prices for the consumer. Though your effects about the human health are still ignored and for that same reason, several restrictions to that type of food have been imposed. In that sense, this work sought to enlarge the discussion on that product type, discussing the possible environmental, economical and biological impacts of the transgenic use. The work is concluded... |
| Tipo: Journal Article |
Palavras-chave: Transgenic food; Agricultural productivity; Agricultural; Agribusiness. |
| Ano: 2005 |
URL: http://purl.umn.edu/43932 |
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