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| Registros recuperados: 31 | |
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| Serra, Teresa; Goodwin, Barry K.. |
| Asymmetric threshold error correction models are used to analyze price relationships and patterns of transmission among farm and retail markets for a variety of dairy products in Spain. Our empirical analysis is conducted using both weekly and monthly price data. Our results suggest that the transmission of shocks is largely unidirectional, running from the farm to retail levels. Formal tests confirm asymmetries, though our results suggest that the effects of these asymmetries are modest. Implications for the organizational structure of Spanish dairy markets are offered. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Livestock Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/19622 |
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| Serra, Teresa; Zilberman, David; Gil, Jose Maria. |
| We focus on determining the impacts of government programs on farms technical inefficiency levels. We use Kumbhakars (2002) stochastic frontier model that accounts for both production risks and risk preferences. Our theoretical framework shows that decoupled government transfers are likely to increase (decrease) DARA (IARA) farmers production inefficiencies if variable inputs are risk decreasing. However, the impacts of decoupled payments cannot be anticipated if variable inputs are risk increasing. We use farm-level data collected in Kansas to illustrate the model. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2007 |
URL: http://purl.umn.edu/9952 |
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| Serra, Teresa; Zilberman, David. |
| Our paper looks at how price volatility in the Brazilian ethanol industry changes over time and across markets. Demand and supply forces in the energy and food markets are likely to ensure that crude oil, ethanol and feedstock prices co-move in the long-run. Hence, when assessing price volatility changes and spillovers in the ethanol industry, one should also pay attention to the notion of cointegration. Until recently, the methods proposed to estimate cointegration relationships, have not explicitly considered time varying volatility in the data. Seo (2007) suggests an estimator of the cointegration vector that explicitly models conditional heteroskedasticity. More specifically, he proposes a maximum likelihood estimator that estimates the error... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Volatility; Ethanol; Cointegration; Demand and Price Analysis; Research Methods/ Statistical Methods; Q11; C32. |
| Ano: 2009 |
URL: http://purl.umn.edu/49940 |
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| Serra, Teresa; Zilberman, David; Goodwin, Barry K.; Featherstone, Allen M.. |
| This paper studies the extent to which decoupled income support measures in agriculture can have production implications both at the extensive and intensive margins. We develop a theoretical framework that analyzes production responses of agricultural producers to apparently decoupled payments, by explicitly considering risk attitudes and uncertainty. We use farm-level data collected in Kansas to estimate the model. Technology and risk preference parameters are jointly estimated. Results show that though lump sum payments are not fully decoupled in the presence of risk and uncertainty, their effects on agricultural production are likely to be of a very small magnitude. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agricultural and Food Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19194 |
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| Lambarraa, Fatima; Gil, Jose Maria; Serra, Teresa. |
| Spain occupies the first position in the European and Mediterranean rankings of citrus production and trade. In our analysis we assess the technical efficiency with which this sector is operating. The main objective of this study is to analyze productivity and technical efficiency of Spanish citrus sector through citrus farms with high orange production. A stochastic frontier production model is estimated in which the technical inefficiency effects are defined by the time-varying inefficiency model. A primal approach is used to decompose Total Factor Productivity (TFP) growth into its various components. Results indicate improvement in efficiency scores of Spanish citrus farms along the period studied. Allocative efficiencies, technical efficiency change,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Productivity Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/9393 |
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| Hassouneh, Islam; Radwan, Amr; Serra, Teresa; Gil, Jose Maria. |
| In recent years, health risks have received increasing attention among consumers and created interest in analysing the relationship between food scares, food consumption and market prices. One of the most relevant and recent food scares is the avian influenza that has had important effects not only on human and animal health, but also on the economy. We assess effects of avian influenza on price transmission along the Egyptian poultry marketing chain. Although Egypt has been one of the most affected countries by avian influenza, this article is the first attempt to understand this food scare’s impacts on Egyptian poultry markets. In doing so, a multivariate smooth transition vector error correction model (STVECM) is applied to monthly poultry price data.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food scare; Avian influenza; Price transmission; Egypt.; Production Economics; C22; Q13. |
| Ano: 2010 |
URL: http://purl.umn.edu/91830 |
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| Registros recuperados: 31 | |
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